Method and device for compressed air energy storage development of depleted oil and gas reservoirs

Abstract

The application provides a kind of depleted oil and gas reservoir compressed air energy storage development method and device, it is related to oil and gas field development technical field, the method comprises: obtaining the attribute data corresponding to the depleted oil and gas reservoir to be developed;Attribute data includes cap rock core sample detection data, sand production index and associated gas data;Based on cap rock core sample detection data, determine the sealing detection result corresponding to the depleted oil and gas reservoir to be developed;Based on sand production index, determine the sand production detection result corresponding to the depleted oil and gas reservoir to be developed;In the case where sealing detection result and sand production detection result are qualified, determine the target pressure storage transformation development strategy corresponding to the depleted oil and gas reservoir to be developed;Target pressure storage transformation development strategy includes target sand prevention transformation sub-strategy and target pressure storage transformation sub-strategy.The application can solve the problem that case exploration development process is not clear and lacks standardized work procedure, and improve the universality of depleted oil and gas reservoir pressure storage transformation.

Description

Technical Field

[0001] This invention relates to the field of oil and gas field development technology, and in particular to a method and apparatus for the development of depleted oil and gas reservoirs using compressed air energy storage. Background Technology

[0002] The efficient utilization of depleted oil and gas reservoirs is a crucial direction for the green transformation of the oil and gas industry. Unlocking the value of depleted oil and gas reservoirs, transforming them from single fossil fuel production sites into diversified energy regulation hubs, has significant strategic importance. Some depleted reservoirs possess intact trap structures, good sealing properties, and existing wellbores and some surface facilities, thus holding immense potential for conversion into compressed air energy storage. The basic principle is to use surplus electricity to inject high-pressure air into the reservoir for storage during off-peak electricity demand; during peak demand, the high-pressure air is released to drive turbines for power generation, providing energy support to the grid. This model not only revitalizes dormant assets, transforming depleted reservoirs into large-scale "underground green power banks," but also effectively supports the grid connection and consumption of intermittent renewable energy sources such as wind and solar power, providing new solutions for energy security and clean, low-carbon development. It represents innovation and value enhancement at the end of the oil and gas field's life cycle.

[0003] In existing technologies, pressure storage and chemical stimulation schemes for depleted oil and gas reservoirs under different conditions are generally explored on a case-by-case basis, with unclear development processes and a lack of standardized work procedures, specifications, and universality. Therefore, how to provide a standardized and universal pressure storage and chemical stimulation method for depleted oil and gas reservoirs is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This invention provides a method and apparatus for the development of compressed air energy storage in depleted oil and gas reservoirs, which solves the problems of unclear development process and lack of standardized work procedures, norms and universality in the existing technology for the development of compressed air energy storage in depleted oil and gas reservoirs.

[0005] This invention provides a method for the development of compressed air energy storage in depleted oil and gas reservoirs, comprising the following steps.

[0006] Obtain attribute data corresponding to the depleted oil and gas reservoirs to be developed; the attribute data includes core sample test data of the caprock, sand production index and associated gas data; Based on the test data of the caprock core samples, the sealing performance test results of the depleted oil and gas reservoir to be developed were determined. Based on the sand production index, the sand production test results corresponding to the depleted oil and gas reservoir to be developed are determined; If both the sealing test results and the sand production test results are qualified, a target compression and storage development strategy is determined for the depleted oil and gas reservoir to be developed. The target compression and storage development strategy includes a target sand control sub-strategy and a target compression and storage sub-strategy. The target sand control sub-strategy is determined based on the sand production type and the sand production index of the depleted oil and gas reservoir to be developed. The target compression and storage sub-strategy is determined based on the associated gas data of the depleted oil and gas reservoir to be developed.

[0007] According to the method for developing depleted oil and gas reservoirs using compressed air energy storage provided by the present invention, the detection data of the caprock core sample includes static load sealing data and alternating load permeability; the static load sealing data includes static load permeability or breakthrough pressure. The determination of the sealing performance test results corresponding to the depleted oil and gas reservoir to be developed based on the test data of the caprock core samples includes: Based on the static load permeability or the breakthrough pressure, determine the first sealing performance test result corresponding to the depleted oil and gas reservoir to be developed; If the first sealing test result is unqualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the first sealing test result is qualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined based on the static load permeability and the alternating load permeability.

[0008] According to the compressed air energy storage development method for depleted oil and gas reservoirs provided by the present invention, determining the first sealing performance test sub-result corresponding to the depleted oil and gas reservoir to be developed based on the static load permeability or the breakthrough pressure includes: If the static load permeability is greater than a first preset threshold, or if the breakthrough pressure is less than a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the static load permeability is less than or equal to a first preset threshold and the breakthrough pressure is greater than or equal to a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0009] According to the compressed air energy storage development method for depleted oil and gas reservoirs provided by the present invention, determining the sealing performance test results corresponding to the depleted oil and gas reservoir to be developed based on the static load permeability and the alternating load permeability includes: If the alternating load permeability is greater than a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the alternating load permeability is less than or equal to a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0010] According to the compressed air energy storage development method for depleted oil and gas reservoirs provided by the present invention, the step of determining the sand production test results corresponding to the depleted oil and gas reservoir to be developed based on the sand production index includes: If the sand production index is less than the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the sand production index is greater than or equal to the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0011] According to the compressed air energy storage development method for depleted oil and gas reservoirs provided by the present invention, the target sand control sub-strategy is determined based on the following steps: When the sand discharge index is greater than the fourth preset threshold and the sand discharge type is fine sand, the target sand control transformation sub-strategy is determined to be to use metal mesh screen pipes for sand removal; the fourth preset threshold is greater than the third preset threshold. When the sand discharge index is less than or equal to the fourth preset threshold and the sand discharge type is medium to coarse sand, the target sand control transformation sub-strategy is determined to be sand removal using slotted screens.

[0012] According to the compressed air energy storage development method for depleted oil and gas reservoirs provided by the present invention, the target compressed air energy storage transformation sub-strategy includes a combustion-assisted route construction and transformation sub-strategy and a non-combustion-assisted route construction and transformation sub-strategy; the combustion-assisted route construction and transformation sub-strategy is used to construct a combustion-assisted compressed air energy storage system; the non-combustion-assisted route construction and transformation sub-strategy is used to construct a non-combustion-assisted compressed air energy storage system; the equipment composition and rated power of the combustion-assisted compressed air energy storage system and the non-combustion-assisted compressed air energy storage system are different.

[0013] According to the compressed air energy storage development method for depleted oil and gas reservoirs provided by the present invention, the target compressed air energy storage transformation sub-strategy is determined based on the following steps: If the associated gas data is greater than the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the combustion route construction and transformation sub-strategy. If the associated gas data is less than or equal to the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the non-refueling route construction and transformation sub-strategy.

[0014] According to the method for developing depleted oil and gas reservoirs using compressed air energy storage provided by the present invention, the attribute data also includes reservoir core sample test data. The rated power of the equipment corresponding to the supplementary combustion type compressed air energy storage system includes the total rated power of the compressor and the rated power of the gas turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The rated power of the gas turbine is determined based on the rated operating time of the gas turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core sample, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

[0015] According to the method for developing compressed air energy storage in depleted oil and gas reservoirs provided by the present invention, the rated power of the equipment corresponding to the non-combustion-type compressed air energy storage system includes the total rated power of the compressor and the total rated power of the air turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The total rated power of the air turbine is determined based on the rated operating time of the air turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core samples, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

[0016] According to the method for developing compressed air energy storage in depleted oil and gas reservoirs provided by the present invention, the supplementary combustion type compressed air energy storage system includes supporting equipment for a first depleted oil and gas reservoir gas storage facility and supplementary combustion type ground equipment. The sub-strategy for constructing and modifying the supplementary combustion route is to first construct the supporting equipment for the gas storage facility of the first depleted oil and gas reservoir, then construct the natural gas replenishment station in the supplementary combustion ground equipment, and finally construct the other supplementary combustion ground equipment besides the natural gas replenishment station in the supplementary combustion ground equipment. The non-combustion compressed air energy storage system includes supporting equipment for the second depleted oil and gas reservoir gas storage facility and non-combustion ground equipment. The non-refueling route construction and modification sub-strategy is used to first exhaust all associated gas in the depleted oil and gas reservoir to be developed, then construct the gas storage facility and supporting equipment for the second depleted oil and gas reservoir, and finally construct the non-refueling ground equipment.

[0017] The present invention also provides a compressed air energy storage development device for depleted oil and gas reservoirs, comprising the following modules.

[0018] The acquisition module is used to acquire attribute data corresponding to the depleted oil and gas reservoir to be developed; the attribute data includes caprock core sample test data, sand production index and associated gas data; The first determining module is used to determine the sealing performance test results of the depleted oil and gas reservoir to be developed based on the test data of the caprock core sample. The second determining module is used to determine the sand production detection results corresponding to the depleted oil and gas reservoir to be developed based on the sand production index. The third determining module is used to determine the target compression and storage development strategy for the depleted oil and gas reservoir to be developed, provided that both the sealing test results and the sand production test results are qualified. The target compression and storage development strategy includes a target sand control sub-strategy and a target compression and storage transformation sub-strategy. The target sand control sub-strategy is determined based on the sand production type and the sand production index of the depleted oil and gas reservoir to be developed. The target compression and storage transformation sub-strategy is determined based on the associated gas data of the depleted oil and gas reservoir to be developed.

[0019] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the compressed air energy storage development method for depleted oil and gas reservoirs as described above.

[0020] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the compressed air energy storage development method for depleted oil and gas reservoirs as described above.

[0021] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the compressed air energy storage development method for depleted oil and gas reservoirs as described above.

[0022] This invention provides a method and apparatus for compressed air energy storage development of depleted oil and gas reservoirs. The method determines the sealing performance of the depleted oil and gas reservoir by analyzing caprock core sample test data from the attribute data corresponding to the reservoir, and determines the sand production performance by analyzing the sand production index. If both the sealing performance and sand production results are satisfactory, the method determines a target sand control sub-strategy within the target compressed air energy storage development strategy for the depleted oil and gas reservoir based on the sand production type and index. Finally, the method determines the corresponding target compressed air energy storage sub-strategy for the depleted oil and gas reservoir based on associated gas data. In this invention, by sequentially executing steps such as acquiring attribute data, sealing performance testing, sand production testing, and development strategy determination, the execution order of each process in the development of depleted oil and gas reservoirs is clarified. This transforms the controlled storage and transformation of depleted oil and gas reservoirs from disordered case studies into a standardized procedure with clear guidelines, solving the problems of unclear development processes and lack of standardized work procedures in case studies. At the same time, by combining the results of sealing performance testing, sand production testing, and associated gas data, different target controlled storage and transformation strategies are formulated to meet the needs of controlled storage and transformation of depleted oil and gas reservoirs under different geological conditions, thereby improving the versatility of controlled storage and transformation of depleted oil and gas reservoirs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is one of the flowcharts illustrating the compressed air energy storage development method for depleted oil and gas reservoirs provided in this embodiment of the invention.

[0025] Figure 2 This is the second schematic flowchart of the compressed air energy storage development method for depleted oil and gas reservoirs provided in this embodiment of the invention.

[0026] Figure 3 This is a schematic diagram of the structure of the supplementary combustion type compressed air energy storage system provided in an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the non-combustion compressed air energy storage system provided in the embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the compressed air energy storage development device for depleted oil and gas reservoirs provided in an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the electronic device provided in an embodiment of the present invention.

[0030] Figure label: 10: Supporting equipment for the first depleted oil and gas reservoir; 11: First wellbore; 12: Second wellbore; 2: First valve; 31: First gas transmission pipeline; 32: Second gas transmission pipeline; 9: Natural gas replenishment pipeline; 20: Refueling ground equipment; 41: First electric motor; 42: Second electric motor; 43: Third electric motor; 51: First compressor; 52: Second compressor; 53: Third compressor; 8: Natural gas refueling station; 6: Gas turbine; 7: First generator; 100: Supporting equipment for the second depleted oil and gas reservoir; 101: Third wellbore; 102: Fourth wellbore; 111: Second valve; 121: Third gas pipeline; 122: Fourth gas pipeline; 200: Non-refueling ground equipment; 131: Fourth electric motor; 132: Fifth electric motor; 133: Sixth electric motor; 141: Fourth compressor; 142: Fifth compressor; 143: Sixth compressor; 171: First heat exchanger; 172: Second heat exchanger; 173: Third heat exchanger; 174: Fourth heat exchanger; 175: Fifth heat exchanger; 181: First thermal storage system; 182: Second thermal storage system; 151: First air turbine; 152: Second air turbine; 16: Second generator. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0032] To address the issues of unclear development processes and a lack of standardized procedures, specifications, and universality in existing technologies for the development of compressed air energy storage in depleted oil and gas reservoirs, this invention provides a method for the development of compressed air energy storage in depleted oil and gas reservoirs. Figure 1 This is one of the flowcharts illustrating the compressed air energy storage development method for depleted oil and gas reservoirs provided in this embodiment of the invention, such as... Figure 1 As shown, the method includes steps 110 to 140.

[0033] Step 110: Obtain the attribute data corresponding to the depleted oil and gas reservoir to be developed; the attribute data includes the detection data of caprock core samples, sand production index and associated gas data.

[0034] Specifically, the attribute data corresponding to the depleted oil and gas reservoir to be developed includes caprock core sample test data, sand production index, and associated gas data.

[0035] (1) Caprock core samples were collected from the caprock of the depleted oil and gas reservoir to be developed. Multiple sealing physical tests were conducted on the caprock core samples to obtain the test data of the caprock core samples. The test data of the caprock core samples include static load sealing data and alternating load permeability. The static load sealing data includes static load permeability or breakthrough pressure. The static load permeability represents the gas permeability of the caprock core sample under static load conditions. The breakthrough pressure represents the minimum pressure required for gas to break through the caprock core sample. The alternating load permeability represents the gas permeability of the caprock core sample under periodically changing alternating load conditions.

[0036] The physical test for sealing includes static load permeability test, breakthrough pressure test and permeability test under alternating load. The process involves several steps: Static load permeability tests are conducted on caprock core samples to obtain the static load permeability corresponding to the depleted oil and gas reservoir to be developed. This static load permeability reflects the sealing performance of the caprock core samples under stable pressure. Breakthrough pressure tests are also conducted on caprock core samples to obtain the breakthrough pressure corresponding to the depleted oil and gas reservoir to be developed. The alternating load permeability test simulates the sealing performance of the caprock core samples under periodic pressure changes during long-term charge-discharge cycles of a compressed air energy storage system. This alternating load permeability test includes alternating load tests and permeability tests. At least four alternating load permeability tests are performed on the caprock core samples, with the number of alternating load tests being greater than or equal to 2000. For example, a permeability test is performed every 500 alternating load tests. After each permeability test, an alternating load permeability test value is obtained. All alternating load permeability test values ​​are sorted in descending order, and the highest-ranked alternating load permeability test value, i.e., the maximum alternating load permeability test value, is determined as the alternating load permeability.

[0037] It should be noted that the caprock core sample must be processed before conducting the alternating load test, and the processing precision must meet the experimental specifications recommended by the International Society for Rock Mechanics. Specific processing procedures include: installing the caprock core sample onto the test bench and sealing it with a thermoplastic tube to prevent liquid from seeping into the sample. An indenter and axial-circumferential strain measuring device are then installed on the core sample, and the processed sample is placed in a pressure vessel. Subsequently, axial pressure is applied to the processed core sample to the average level of the alternating load, while maintaining a constant confining pressure. Starting from this average level, alternating loads are periodically applied to conduct a permeability test on the caprock core sample under alternating load.

[0038] Furthermore, during the breakthrough pressure test, the gas must contact the surface of the caprock core sample at the inlet. Initially, the gas pressure is the same as the pore pressure within the caprock core sample. Subsequently, the gas pressure is increased incrementally, with the increase in pressure and test duration for each increment conforming to the standard SY / T5748-2013. The total test duration depends on the permeability and displacement pressure of the caprock core sample. When the gas pressure exceeds the displacement pressure, gas permeates into the caprock core sample. If bubbles are detected at the outlet, it indicates that the caprock core sample has been breached.

[0039] Optionally, the number of caprock core samples is greater than or equal to 10 to ensure the reliability of the caprock core sample test data.

[0040] (2) The sand production index is used to characterize the sand production of the depleted oil and gas reservoir to be developed. The sand production index method can be used to detect the severity of sand production in the depleted oil and gas reservoir to be developed and obtain the sand production index.

[0041] (3) Associated gas is natural gas that coexists with oil in the depleted oil and gas reservoir to be developed. The associated gas data can be determined based on the historical production data of natural gas corresponding to the depleted oil and gas reservoir to be developed. That is, the associated gas data is determined by the maximum natural gas production of a single well corresponding to the depleted oil and gas reservoir to be developed in the historical production data of natural gas.

[0042] Step 120: Based on the detection data of the caprock core sample, determine the sealing performance test results corresponding to the depleted oil and gas reservoir to be developed.

[0043] Specifically, airtightness is a key indicator for determining whether a depleted oil and gas reservoir can safely store compressed air. If the airtightness is substandard, compressed air will leak from the reservoir, reducing energy storage efficiency and potentially causing safety accidents. Therefore, in this embodiment of the invention, after obtaining the test data from the caprock core sample, the airtightness test result of the depleted oil and gas reservoir is determined based on the test data. This airtightness test result is used to characterize whether the airtightness of the depleted oil and gas reservoir is up to standard.

[0044] Step 130: Based on the sand production index, determine the sand production test results corresponding to the depleted oil and gas reservoir to be developed.

[0045] Specifically, sand production is a common phenomenon in depleted oil and gas reservoirs. However, in compressed air energy storage systems, severe sand production can cause sand-laden air to enter critical surface equipment, resulting in wear and even damage. Therefore, in this embodiment of the invention, after determining the sand production index, the sand production detection result of the depleted oil and gas reservoir to be developed is determined based on the sand production index. This sand production detection result is used to characterize whether the sand production of the depleted oil and gas reservoir to be developed is severe.

[0046] Step 140: If both the sealing test result and the sand production test result are qualified, determine the target compression and storage development strategy for the depleted oil and gas reservoir to be developed; the target compression and storage development strategy includes a target sand control sub-strategy and a target compression and storage sub-strategy; the target sand control sub-strategy is determined based on the sand production type and the sand production index of the depleted oil and gas reservoir to be developed; the target compression and storage sub-strategy is determined based on the associated gas data of the depleted oil and gas reservoir to be developed.

[0047] Specifically, if at least one of the sealing test results and the sand production test results is unqualified, it indicates that the depleted oil and gas reservoir to be developed does not meet the conditions for compressed storage development, and step 140 does not need to be performed to avoid wasting resources.

[0048] Assuming both sealing and sand production test results are satisfactory, and considering the sand production type, sand production index, and associated gas data of the depleted oil and gas reservoir to be developed, a target compression and storage development strategy that meets the geological conditions of the reservoir is determined. This target compression and storage development strategy includes a target sand control sub-strategy and a target compression and storage stimulation sub-strategy. The target sand control sub-strategy, determined based on the sand production type and index of the depleted oil and gas reservoir, is used to filter sand particles and prevent sand-laden air from entering critical surface equipment. The target compression and storage stimulation sub-strategy, determined based on associated gas data, is used to determine standardized compression and storage stimulation procedures for different technical routes based on the abundance of associated gas.

[0049] This invention provides a method for the compressed air energy storage development of depleted oil and gas reservoirs. The method determines the sealing performance of the depleted oil and gas reservoir by analyzing the caprock core sample test data from the attribute data corresponding to the reservoir, and determines the sand production performance by analyzing the sand production index. If both the sealing performance and sand production results are satisfactory, a target sand control sub-strategy is determined based on the sand production type and index within the target compressed air energy storage development strategy for the depleted oil and gas reservoir. Finally, a target compressed air energy storage sub-strategy is determined based on associated gas data. In this embodiment of the invention, by sequentially executing steps such as acquiring attribute data, sealing performance testing, sand production testing, and development strategy determination, the execution order of each process in the development of depleted oil and gas reservoirs is clarified. This transforms the compression and storage transformation of depleted oil and gas reservoirs from disordered case exploration into a standardized procedure with rules to follow, solving the problems of unclear case exploration development processes and lack of standardized work procedures. At the same time, by combining the sealing performance testing results, sand production testing results, and associated gas data, different target compression and storage development strategies are formulated to meet the compression and storage transformation needs of depleted oil and gas reservoirs under different geological conditions, thereby improving the versatility of compression and storage transformation of depleted oil and gas reservoirs.

[0050] In one embodiment, Figure 2 This is the second schematic flowchart of the compressed air energy storage development method for depleted oil and gas reservoirs provided in this embodiment of the invention, as shown below. Figure 2 As shown, determining the sealing performance test results of the depleted oil and gas reservoir to be developed based on the test data of the caprock core sample includes: Based on the static load permeability or the breakthrough pressure, determine the first sealing performance test result corresponding to the depleted oil and gas reservoir to be developed; If the first sealing test result is unqualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the first sealing test result is qualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined based on the static load permeability and the alternating load permeability.

[0051] Specifically, the static load permeability reflects the gas permeability of the depleted oil and gas reservoir under stable load conditions. A higher static load permeability indicates insufficient sealing of the caprock of the depleted oil and gas reservoir when not subjected to any periodic loads, potentially leading to leakage after compressed air injection. The breakthrough pressure reflects the minimum pressure required for gas to penetrate the caprock of the depleted oil and gas reservoir. A lower breakthrough pressure indicates that compressed air can penetrate the caprock and cause leakage within the normal operating pressure range. Therefore, in this embodiment of the invention, after determining the static load permeability or breakthrough pressure, a first sealing performance test result corresponding to the depleted oil and gas reservoir is determined based on the static load permeability or breakthrough pressure. This first sealing performance test result is used to characterize whether the sealing performance of the depleted oil and gas reservoir is qualified when not subjected to any periodic loads.

[0052] If the first sealing performance test result is unqualified, it indicates that the sealing performance of the depleted oil and gas reservoir to be developed is unqualified, and the reservoir does not meet the conditions for compression storage and development. If the first sealing performance test result is qualified, it indicates that the sealing performance of the depleted oil and gas reservoir to be developed is initially qualified when it has not been subjected to any periodic loads, but it cannot be guaranteed that the caprock will maintain good sealing performance after long-term operation. Therefore, based on the static load permeability and alternating load permeability, the second sealing performance test result corresponding to the depleted oil and gas reservoir to be developed is further determined. This second sealing performance test result is used to characterize whether the sealing performance of the depleted oil and gas reservoir to be developed is qualified when subjected to periodic loads.

[0053] If the second sealing performance test result is unsatisfactory, it indicates that the caprock of the depleted oil and gas reservoir to be developed has degraded in sealing performance after long-term operation, posing a risk of compressed air leakage. Therefore, the sealing performance of the depleted oil and gas reservoir to be developed is unsatisfactory, and the reservoir does not meet the conditions for compressed air storage and development. If the second sealing performance test result is satisfactory, it indicates that the caprock of the depleted oil and gas reservoir to be developed maintains a high level of sealing performance after long-term operation, and the reservoir meets the conditions for compressed air storage and development.

[0054] In one embodiment, determining the first sealing performance test result corresponding to the depleted oil and gas reservoir to be developed based on the static load permeability or the breakthrough pressure includes: If the static load permeability is greater than a first preset threshold, or if the breakthrough pressure is less than a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the static load permeability is less than or equal to a first preset threshold and the breakthrough pressure is greater than or equal to a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0055] Specifically, if the static load permeability is greater than the first preset threshold, or the breakthrough pressure is less than the second preset threshold, it indicates that the first sealing performance test result of the depleted oil and gas reservoir to be developed is unqualified. The sealing performance of the caprock itself is unqualified when the depleted oil and gas reservoir to be developed is not subject to any periodic load, and there is a risk of compressed air leakage. The depleted oil and gas reservoir to be developed does not meet the conditions for pressure storage and development, and the subsequent development process can be terminated to avoid waste of resources.

[0056] Conversely, if the static load permeability is less than or equal to the first preset threshold and the breakthrough pressure is greater than or equal to the second preset threshold, it indicates that the first sealing performance test result of the depleted oil and gas reservoir to be developed is qualified, and the sealing performance of the caprock itself is initially qualified when the depleted oil and gas reservoir to be developed has not been subjected to any periodic load.

[0057] Optionally, the first preset threshold is the upper limit of permeability in the oil and gas field development field to ensure that compressed air can be stored in the depleted oil and gas reservoir to be developed. For example, the first preset threshold can be 0.1 mD. The second preset threshold is the lower limit of the pressure of the caprock in the normal operating pressure range of the compressed air energy storage system in the oil and gas field development field. For example, the second preset threshold can be 5 MPa.

[0058] In one embodiment, determining the sealing performance test results of the depleted oil and gas reservoir to be developed based on the static load permeability and the alternating load permeability includes: If the alternating load permeability is greater than a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the alternating load permeability is less than or equal to a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0059] Specifically, if the first sealing performance test result is qualified, the alternating load permeability is compared with the static load permeability at a preset multiple. If the alternating load permeability is greater than the static load permeability at a preset multiple, it indicates that the permeability of the caprock of the depleted oil and gas reservoir to be developed has increased significantly under alternating load, and the sealing performance of the caprock has significantly deteriorated. In this case, the second sealing performance test result corresponding to the depleted oil and gas reservoir to be developed is unqualified, that is, the sealing performance test result corresponding to the depleted oil and gas reservoir to be developed is unqualified, and the depleted oil and gas reservoir to be developed does not meet the conditions for compression storage and development. If the alternating load permeability is less than or equal to the static load permeability at a preset multiple, it indicates that the caprock of the depleted oil and gas reservoir to be developed still maintains good sealing performance under alternating load. In this case, the second sealing performance test result corresponding to the depleted oil and gas reservoir to be developed is qualified, that is, the sealing performance test result corresponding to the depleted oil and gas reservoir to be developed is qualified, and the depleted oil and gas reservoir to be developed meets the conditions for compression storage and development.

[0060] Optionally, the preset multiple is a threshold value that ensures compressed air cannot leak when subjected to cyclic loads. The preset multiple can be flexibly adjusted based on historical experience. For example, the preset multiple can be 200% or 220%, etc. The embodiments of the present invention do not limit this.

[0061] In one embodiment, such as Figure 2 As shown, determining the sand production test results corresponding to the depleted oil and gas reservoir to be developed based on the sand production index includes: If the sand production index is less than the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the sand production index is greater than or equal to the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0062] Specifically, after determining the sand production index, it is compared with a third preset threshold. If the sand production index is less than the third preset threshold, it indicates that the sand production of the depleted oil and gas reservoir to be developed is severe, and the risk of sand-laden air entering and causing work on critical surface equipment is high. In this case, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified, and the depleted oil and gas reservoir to be developed does not meet the conditions for compression and storage development. The subsequent development process can be terminated to avoid wasting resources. Conversely, if the sand production index is greater than the third preset threshold, it indicates that the sand production of the depleted oil and gas reservoir to be developed is low, and the risk of sand-laden air entering and causing work on critical surface equipment is low. In this case, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified, and the depleted oil and gas reservoir to be developed meets the conditions for compression and storage development.

[0063] Optionally, the third preset threshold is a sand production index threshold that enables the development of compressed storage. The third preset threshold can be flexibly determined based on historical sand production statistics. For example, the third preset threshold can be 30,000 MPa.

[0064] In one embodiment, the target sandification control sub-strategy is determined based on the following steps: When the sand discharge index is greater than the fourth preset threshold and the sand discharge type is fine sand, the target sand control transformation sub-strategy is determined to be to use metal mesh screen pipes for sand removal; the fourth preset threshold is greater than the third preset threshold. When the sand discharge index is less than or equal to the fourth preset threshold and the sand discharge type is medium to coarse sand, the target sand control transformation sub-strategy is determined to be sand removal using slotted screens.

[0065] Specifically, when the depleted oil and gas reservoir meets the conditions for compression and storage development, the sand production type corresponding to the reservoir is obtained. This sand production type characterizes the particle size of the sand grains in the reservoir. The sand production type includes fine sand and medium-coarse sand. The fine sand has a particle size ranging from 0.1 mm to 0.25 mm, and the medium-coarse sand has a particle size ranging from 0.25 mm to 1 mm. This sand production type can be obtained by collecting sand grains from the depleted oil and gas reservoir and measuring their particle size.

[0066] Next, the sand production index is compared with the fourth preset threshold. If the sand production index is greater than the fourth preset threshold, it indicates that the sand content in the depleted oil and gas reservoir to be developed is relatively small, the risk of sand-laden air entering key surface equipment and causing damage is low, and in the case of fine sand, metal mesh screens can be used for sand removal. Metal mesh screens are constructed by covering a base pipe with multiple layers of metal woven mesh of different mesh sizes. The multiple layers of metal woven mesh directly intercept fine sand, which naturally accumulates on the outer wall of the metal mesh screen to form highly permeable sand bridges, further hindering fine sand penetration and thus achieving sand control transformation.

[0067] If the sand production index is less than or equal to the fourth preset threshold, it indicates that the sand content in the depleted oil and gas reservoir to be developed is relatively high, and the risk of sand-laden air entering critical surface equipment is high. In the case of medium to coarse sand, slotted screens can be used for sand removal. Slotted screens block sand particles by cutting slits of a specific width and density into the metal pipe wall, thereby achieving sand control.

[0068] Optionally, the fourth preset threshold is a threshold value for judging the amount of sand in the depleted oil and gas reservoir to be developed, and the fourth preset threshold is greater than the third preset threshold.

[0069] In one embodiment, the target compressed air energy storage transformation sub-strategy includes a supplementary combustion route construction and transformation sub-strategy and a non-supplementary combustion route construction and transformation sub-strategy; the supplementary combustion route construction and transformation sub-strategy is used to construct a supplementary combustion type compressed air energy storage system; the non-supplementary combustion route construction and transformation sub-strategy is used to construct a non-supplementary combustion type compressed air energy storage system.

[0070] In one embodiment, such as Figure 2 As shown, the target pressure storage and chemical transformation sub-strategy is determined based on the following steps: If the associated gas data is greater than the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the combustion route construction and transformation sub-strategy. If the associated gas data is less than or equal to the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the non-refueling route construction and transformation sub-strategy.

[0071] Specifically, the associated gas data is compared with the fifth preset threshold. If the associated gas data is greater than the fifth preset threshold, it indicates that the associated gas content of the depleted oil and gas reservoir to be developed is abundant, that is, the natural gas production in the depleted oil and gas reservoir to be developed is relatively large. At this time, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed can be determined as the combustion route construction and transformation sub-strategy. The combustion route construction and transformation sub-strategy is used to construct a combustion-type compressed air energy storage system. In the power generation process, the combustion-type compressed air energy storage system mixes compressed air with natural gas and then enters the gas turbine for combustion to do work, thereby driving the generator to generate electricity.

[0072] If the associated gas data is less than or equal to the fifth preset threshold, it indicates that the associated gas content of the depleted oil and gas reservoir to be developed is scarce, that is, the natural gas production in the depleted oil and gas reservoir to be developed is low. At this time, it can be determined that the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is the non-combustion route construction and transformation sub-strategy. The non-combustion route construction and transformation sub-strategy is used to construct a non-combustion compressed air energy storage system. In the power generation process, the non-combustion compressed air energy storage system only uses compressed air heated by a heat exchanger to drive an air turbine to do work, thereby driving a generator to generate electricity, without involving the mixing and combustion of natural gas.

[0073] Optionally, the fifth preset threshold is a threshold value for judging whether associated gas data is abundant, and can be flexibly adjusted according to historical production data. This embodiment of the invention does not limit this.

[0074] It should be noted that the equipment composition and rated power of the supplementary combustion type compressed air energy storage system and the non-supplementary combustion type compressed air energy storage system are different.

[0075] In one embodiment, the supplementary combustion compressed air energy storage system includes supporting equipment 10 for a first depleted oil and gas reservoir gas storage facility and supplementary combustion ground equipment; The sub-strategy for constructing and modifying the supplementary combustion route is to first construct the supporting equipment 10 for the gas storage facility of the first depleted oil and gas reservoir, then construct the natural gas replenishment station in the supplementary combustion ground equipment, and finally construct the other supplementary combustion ground equipment in the supplementary combustion ground equipment except for the natural gas replenishment station. The non-combustion compressed air energy storage system includes supporting equipment 100 for the second depleted oil and gas reservoir gas storage facility and non-combustion ground equipment. The non-refueling route construction and modification sub-strategy is used to first exhaust all associated gas in the depleted oil and gas reservoir to be developed, then construct the gas storage facility 100 for the second depleted oil and gas reservoir, and finally construct the non-refueling ground equipment.

[0076] Specifically, Figure 3 This is a schematic diagram of the structure of the afterburning compressed air energy storage system provided in an embodiment of the present invention, as shown below. Figure 3As shown, in the supplemental combustion type compressed air energy storage system, the supporting equipment 10 for the first depleted oil and gas reservoir storage facility includes a first wellbore 11, a second wellbore 12, a first valve 2, a first gas transmission pipeline 31, a second gas transmission pipeline 32, and a natural gas replenishment pipeline 9. The supplemental combustion type surface equipment includes: a first electric motor 41, a second electric motor 42, a third electric motor 43, a first compressor 51, a second compressor 52, a third compressor 53, a natural gas replenishment station 8, a gas turbine 6, and a first generator 7. During charging, the first electric motor 41 drives the first compressor 51 to compress air, the second electric motor 42 drives the second compressor 52 to compress air, and the third electric motor 43 drives the third compressor 53 to compress air. The compressed air is transported through the first gas transmission pipeline 31 and the first wellbore 11 to the depleted oil and gas reservoir to be developed for storage. During power generation, compressed air stored in the depleted oil and gas reservoir to be developed reaches the inlet of the gas turbine 6 through the second wellbore 12, the first valve 2, and the second gas pipeline 32. After mixing with natural gas from the natural gas replenishment station 8 and transported through the natural gas replenishment pipeline 9, it enters the gas turbine 6 for combustion and power generation. Afterward, the gas turbine drives the first generator 7 to generate electricity.

[0077] Figure 4 This is a schematic diagram of the non-combustion compressed air energy storage system provided in an embodiment of the present invention, as shown below. Figure 4As shown, in the non-combustion type compressed air energy storage system, the supporting equipment 100 for the second depleted oil and gas reservoir gas storage includes a third wellbore 101, a fourth wellbore 102, a second valve 111, a third gas transmission pipeline 121, and a fourth gas transmission pipeline 122. The non-combustion type ground equipment 200 includes a fourth electric motor 131, a fifth electric motor 132, a sixth electric motor 133, a fourth compressor 141, a fifth compressor 142, a sixth compressor 143, a first heat exchanger 171, a second heat exchanger 172, a third heat exchanger 173, a fourth heat exchanger 174, a fifth heat exchanger 175, a first thermal storage system 181, a second thermal storage system 182, a first air turbine 151, a second air turbine 152, and a second generator 16. During charging, the fourth motor 131 drives the fourth compressor 141 to compress air, the fifth motor 132 drives the fifth compressor 142 to compress air, and the sixth motor 133 drives the sixth compressor 143 to compress air. The high-grade heat during the compression process is recovered by heat transfer oil in the first heat exchanger 171, the second heat exchanger 172, and the third heat exchanger 173 and then transported to the first thermal storage system 181 for storage. The compressed air is transported to the depleted oil and gas reservoir to be developed for storage via the third gas pipeline 121 and the third wellbore 101. During power generation, compressed air stored in the depleted oil and gas reservoir is transmitted through the fourth wellbore 102, the second valve 111, and the fourth gas pipeline 122 to the fourth heat exchanger 174 and the fifth heat exchanger 175 for heating. After heating, the compressed air enters the first air turbine 151 and the second air turbine 152 for expansion and to do work. Then, the first air turbine 151 and the second air turbine 152 drive the second generator 16 to generate electricity. At the same time, the heat transfer oil in the fourth heat exchanger 174 and the fifth heat exchanger 175 is transferred to the second thermal storage system 182 for storage after heat exchange.

[0078] It should be noted that the attribute data of this depleted oil and gas reservoir also includes reservoir core sample testing data, which was obtained through multiple tests on reservoir core samples from the depleted oil and gas reservoir. This reservoir core sample testing data includes corresponding 3D seismic data and porosity testing data. The 3D seismic data is used to determine the average area and thickness of the reservoir in the depleted oil and gas reservoir, and the porosity testing data is used to determine the average effective porosity of the reservoir in the depleted oil and gas reservoir.

[0079] In one embodiment, the rated power of the equipment corresponding to the afterburning compressed air energy storage system includes the total rated power of the compressor and the rated power of the gas turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The rated power of the gas turbine is determined based on the rated operating time of the gas turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core sample, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

[0080] Specifically, using equation (1), the total rated power of the compressors corresponding to the first to third compressors in the supplementary combustion compressed air energy storage system is calculated. Equation (1) is: .

[0081] in, This indicates the total rated power of the compressor. Indicates the average area of ​​the reservoir. Indicates the thickness of the reservoir. This represents the average effective porosity of the reservoir. This indicates the maximum operating pressure of the gas storage facility in a depleted oil and gas reservoir. This indicates the minimum operating pressure of the gas storage facility in a depleted oil and gas reservoir. Indicates the compressor's rated operating time. The gas constant representing air. Indicates the average temperature of the reservoir. This represents the fitting coefficient, used to fit the relationship between the compressor intake mass flow rate and the unit charging power under rated operating conditions.

[0082] After determining the total rated power of the compressors, the first to third compressors can be selected.

[0083] Using equation (2), calculate the rated power of the gas turbine in the afterburning compressed air energy storage system. Equation (2) is: .

[0084] in, Indicates the rated power of the gas turbine. This indicates the rated operating time of the gas turbine. The coefficients represent the fitting coefficients, used to fit the relationship between the total inlet mass flow rate of a gas turbine and its unit power generation under rated operating conditions. This represents the proportionality coefficient, used to characterize the proportion of air mass from the gas storage tank to the total intake air mass of the gas turbine under rated operating conditions.

[0085] Once the rated power of the gas turbine is determined, the gas turbine model can be selected based on that rated power.

[0086] In one embodiment, the rated power of the non-combustion compressed air energy storage system includes the total rated power of the compressor and the total rated power of the air turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The total rated power of the air turbine is determined based on the rated operating time of the air turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core samples, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

[0087] Specifically, the total rated power of the compressors corresponding to the fourth to sixth compressors in the non-combustion compressed air energy storage system can be calculated using equation (1), and the fourth to sixth compressors can be selected based on the total rated power of the compressors.

[0088] Using equation (3), the total rated power of the first and second air turbines in the non-combustion compressed air energy storage system is calculated. Equation (3) is: .

[0089] in, This indicates the total rated power of the air turbine. Indicates the rated operating time of the air turbine. This represents the fitting coefficient, used to fit the relationship between the intake mass flow rate of the air turbine and the unit discharge power under rated operating conditions.

[0090] After determining the total rated power of the air turbine, the first and second air turbines can be selected based on the total rated power of the air turbine.

[0091] The compressed air energy storage development device for depleted oil and gas reservoirs provided by the present invention is described below. The compressed air energy storage development device for depleted oil and gas reservoirs described below can be referred to in correspondence with the compressed air energy storage development method for depleted oil and gas reservoirs described above.

[0092] This invention also provides a compressed air energy storage development device for depleted oil and gas reservoirs. Figure 5 This is a schematic diagram of the structure of the compressed air energy storage development device for depleted oil and gas reservoirs provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the compressed air energy storage development device 500 for the depleted oil and gas reservoir includes: an acquisition module 510, a first determination module 520, a second determination module 530, and a third determination module 540.

[0093] The acquisition module 510 is used to acquire attribute data corresponding to the depleted oil and gas reservoir to be developed; the attribute data includes caprock core sample test data, sand production index and associated gas data; The first determining module 520 is used to determine the sealing performance test results of the depleted oil and gas reservoir to be developed based on the test data of the caprock core sample. The second determining module 530 is used to determine the sand production detection results corresponding to the depleted oil and gas reservoir to be developed based on the sand production index. The third determining module 540 is used to determine the target compression and storage development strategy corresponding to the depleted oil and gas reservoir to be developed, provided that both the sealing test result and the sand production test result are qualified. The target compression and storage development strategy includes a target sand control sub-strategy and a target compression and storage transformation sub-strategy. The target sand control sub-strategy is determined based on the sand production type and the sand production index corresponding to the depleted oil and gas reservoir to be developed. The target compression and storage transformation sub-strategy is determined based on the associated gas data corresponding to the depleted oil and gas reservoir to be developed.

[0094] This invention provides a compressed air energy storage development device for depleted oil and gas reservoirs. It determines the sealing performance of the depleted oil and gas reservoir by analyzing caprock core sample test data from the attribute data corresponding to the reservoir, and determines the sand production performance by analyzing the sand production index. If both the sealing performance and sand production results are satisfactory, it determines the target sand control sub-strategy within the target compressed air energy storage development strategy for the depleted oil and gas reservoir based on the sand production type and index. Finally, it determines the corresponding target compressed air energy storage sub-strategy for the depleted oil and gas reservoir based on associated gas data. In this embodiment of the invention, by sequentially executing steps such as acquiring attribute data, sealing performance testing, sand production testing, and development strategy determination, the execution order of each process in the development of depleted oil and gas reservoirs is clarified. This transforms the compression and storage transformation of depleted oil and gas reservoirs from disordered case exploration into a standardized procedure with rules to follow, solving the problems of unclear case exploration development processes and lack of standardized work procedures. At the same time, by combining the sealing performance testing results, sand production testing results, and associated gas data, different target compression and storage development strategies are formulated to meet the compression and storage transformation needs of depleted oil and gas reservoirs under different geological conditions, thereby improving the versatility of compression and storage transformation of depleted oil and gas reservoirs.

[0095] Optionally, the core sample test data of the caprock includes static load sealing data and alternating load permeability; the static load sealing data includes static load permeability or breakthrough pressure.

[0096] Optionally, the first determining module 5205 is specifically used for: Based on the static load permeability or the breakthrough pressure, determine the first sealing performance test result corresponding to the depleted oil and gas reservoir to be developed; If the first sealing test result is unqualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the first sealing test result is qualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined based on the static load permeability and the alternating load permeability.

[0097] Optionally, the first determining module 520 is specifically used for: If the static load permeability is greater than a first preset threshold, or if the breakthrough pressure is less than a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the static load permeability is less than or equal to a first preset threshold and the breakthrough pressure is greater than or equal to a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0098] Optionally, the first determining module 520 is specifically used for: If the alternating load permeability is greater than a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the alternating load permeability is less than or equal to a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0099] Optionally, the second determining module 530 is specifically used for: If the sand production index is less than the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the sand production index is greater than or equal to the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

[0100] Optionally, the third determining module 540 is specifically used for: When the sand discharge index is greater than the fourth preset threshold and the sand discharge type is fine sand, the target sand control transformation sub-strategy is determined to be to use metal mesh screen pipes for sand removal; the fourth preset threshold is greater than the third preset threshold. When the sand discharge index is less than or equal to the fourth preset threshold and the sand discharge type is medium to coarse sand, the target sand control transformation sub-strategy is determined to be sand removal using slotted screens.

[0101] Optionally, the target compressed air energy storage transformation sub-strategy includes a supplementary combustion route construction and transformation sub-strategy and a non-supplementary combustion route construction and transformation sub-strategy; the supplementary combustion route construction and transformation sub-strategy is used to construct a supplementary combustion type compressed air energy storage system; the non-supplementary combustion route construction and transformation sub-strategy is used to construct a non-supplementary combustion type compressed air energy storage system; the equipment composition and rated power of the supplementary combustion type compressed air energy storage system and the non-supplementary combustion type compressed air energy storage system are different.

[0102] Optionally, the third determining module 540 is specifically used for: If the associated gas data is greater than the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the combustion route construction and transformation sub-strategy. If the associated gas data is less than or equal to the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the non-refueling route construction and transformation sub-strategy.

[0103] Optionally, the attribute data may also include reservoir core sample test data; The rated power of the equipment corresponding to the supplementary combustion type compressed air energy storage system includes the total rated power of the compressor and the rated power of the gas turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The rated power of the gas turbine is determined based on the rated operating time of the gas turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core sample, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

[0104] Optionally, the rated power of the equipment corresponding to the non-combustion compressed air energy storage system includes the total rated power of the compressor and the total rated power of the air turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The total rated power of the air turbine is determined based on the rated operating time of the air turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core samples, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

[0105] Optionally, the supplementary combustion compressed air energy storage system includes supporting equipment for a depleted oil and gas reservoir gas storage facility and supplementary combustion ground equipment; The sub-strategy for the construction and modification of the supplementary combustion route is to first construct the supporting equipment for the gas storage facility of the depleted oil and gas reservoir, then construct the natural gas replenishment station in the supplementary combustion ground equipment, and finally construct the other supplementary combustion ground equipment besides the natural gas replenishment station in the supplementary combustion ground equipment. The non-combustion compressed air energy storage system includes supporting equipment for depleted oil and gas reservoirs and non-combustion ground equipment. The non-refueling route construction and modification sub-strategy is used to first exhaust all associated gas in the depleted oil and gas reservoir to be developed, then construct the gas storage facility and supporting equipment for the depleted oil and gas reservoir, and finally construct the non-refueling ground equipment.

[0106] Figure 6 This is a schematic diagram of the structure of the electronic device provided in the embodiment of the present invention, such as... Figure 6 As shown, the electronic device may include: a processor 610, a communications interface 620, a memory 630, and a communications bus 640, wherein the processor 610, the communications interface 620, and the memory 630 communicate with each other through the communications bus 640. The processor 610 can call logic instructions in the memory 630 to execute a compressed air energy storage development method for depleted oil and gas reservoirs. This method includes: acquiring attribute data corresponding to the depleted oil and gas reservoir to be developed; the attribute data includes caprock core sample testing data, sand production index, and associated gas data; determining the sealing performance test result corresponding to the depleted oil and gas reservoir to be developed based on the caprock core sample testing data; determining the sand production test result corresponding to the depleted oil and gas reservoir to be developed based on the sand production index; and determining a target compressed air energy storage development strategy corresponding to the depleted oil and gas reservoir to be developed if both the sealing performance test result and the sand production test result are qualified. The target compressed air energy storage development strategy includes a target sand control sub-strategy and a target compressed air energy storage sub-strategy; the target sand control sub-strategy is determined based on the sand production type and the sand production index of the depleted oil and gas reservoir to be developed; and the target compressed air energy storage sub-strategy is determined based on the associated gas data of the depleted oil and gas reservoir to be developed.

[0107] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0108] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the compressed air energy storage development method for depleted oil and gas reservoirs provided by the above methods. The method includes: acquiring attribute data corresponding to the depleted oil and gas reservoir to be developed; the attribute data includes caprock core sample test data, sand production index, and associated gas data; and determining the sealing performance test results corresponding to the depleted oil and gas reservoir to be developed based on the caprock core sample test data. Based on the sand production index, determine the sand production test results corresponding to the depleted oil and gas reservoir to be developed; if both the sealing test results and the sand production test results are qualified, determine the target compression and storage development strategy corresponding to the depleted oil and gas reservoir to be developed; the target compression and storage development strategy includes a target sand prevention and modification sub-strategy and a target compression and storage modification sub-strategy; the target sand prevention and modification sub-strategy is determined based on the sand production type and the sand production index corresponding to the depleted oil and gas reservoir to be developed; the target compression and storage modification sub-strategy is determined based on the associated gas data corresponding to the depleted oil and gas reservoir to be developed.

[0109] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a method for the compressed air energy storage development of depleted oil and gas reservoirs provided by the methods described above. This method includes: acquiring attribute data corresponding to a depleted oil and gas reservoir to be developed; the attribute data including caprock core sample testing data, sand production index, and associated gas data; determining a sealing performance test result corresponding to the depleted oil and gas reservoir to be developed based on the caprock core sample testing data; determining a sand production test result corresponding to the depleted oil and gas reservoir to be developed based on the sand production index; and, if both the sealing performance test result and the sand production test result are qualified, determining a target compressed air energy storage development strategy corresponding to the depleted oil and gas reservoir to be developed; the target compressed air energy storage development strategy includes a target sand control sub-strategy and a target compressed air energy storage sub-strategy; the target sand control sub-strategy is determined based on the sand production type and the sand production index of the depleted oil and gas reservoir to be developed; and the target compressed air energy storage sub-strategy is determined based on the associated gas data of the depleted oil and gas reservoir to be developed.

[0110] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0111] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for the development of depleted oil and gas reservoirs using compressed air energy storage, characterized in that, include: Obtain attribute data corresponding to depleted oil and gas reservoirs to be developed; The attribute data includes core sample test data of the caprock, sand production index, and associated gas data; Based on the test data of the caprock core samples, the sealing performance test results of the depleted oil and gas reservoir to be developed were determined. Based on the sand production index, the sand production test results corresponding to the depleted oil and gas reservoir to be developed are determined; If both the sealing test results and the sand production test results are qualified, a target compression and storage development strategy is determined for the depleted oil and gas reservoir to be developed. The target compression and storage development strategy includes a target sand control sub-strategy and a target compression and storage sub-strategy. The target sand control sub-strategy is determined based on the sand production type and the sand production index of the depleted oil and gas reservoir to be developed. The target compression and storage sub-strategy is determined based on the associated gas data of the depleted oil and gas reservoir to be developed.

2. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 1, characterized in that, The core sample data from the caprock includes static load sealing data and alternating load permeability; the static load sealing data includes static load permeability or breakthrough pressure. The determination of the sealing performance test results corresponding to the depleted oil and gas reservoir to be developed based on the test data of the caprock core samples includes: Based on the static load permeability or the breakthrough pressure, determine the first sealing performance test result corresponding to the depleted oil and gas reservoir to be developed; If the first sealing test result is unqualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the first sealing test result is qualified, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined based on the static load permeability and the alternating load permeability.

3. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 2, characterized in that, The determination of the first sealing performance test result corresponding to the depleted oil and gas reservoir to be developed based on the static load permeability or the breakthrough pressure includes: If the static load permeability is greater than a first preset threshold, or if the breakthrough pressure is less than a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the static load permeability is less than or equal to a first preset threshold and the breakthrough pressure is greater than or equal to a second preset threshold, the first sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

4. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 2, characterized in that, The determination of the sealing performance test results corresponding to the depleted oil and gas reservoir to be developed based on the static load permeability and the alternating load permeability includes: If the alternating load permeability is greater than a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the alternating load permeability is less than or equal to a preset multiple of the static load permeability, the sealing test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

5. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 1, characterized in that, The determination of the sand production test results corresponding to the depleted oil and gas reservoir to be developed based on the sand production index includes: If the sand production index is less than the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be unqualified. If the sand production index is greater than or equal to the third preset threshold, the sand production test result corresponding to the depleted oil and gas reservoir to be developed is determined to be qualified.

6. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 5, characterized in that, The target sandification control sub-strategy is determined based on the following steps: When the sand discharge index is greater than the fourth preset threshold and the sand discharge type is fine sand, the target sand control transformation sub-strategy is determined to be to use metal mesh screen pipes for sand removal; the fourth preset threshold is greater than the third preset threshold. When the sand discharge index is less than or equal to the fourth preset threshold and the sand discharge type is medium to coarse sand, the target sand control transformation sub-strategy is determined to be sand removal using slotted screens.

7. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 1, characterized in that, The target compressed air energy storage transformation sub-strategy includes a supplementary combustion route construction and transformation sub-strategy and a non-supplementary combustion route construction and transformation sub-strategy; the supplementary combustion route construction and transformation sub-strategy is used to construct a supplementary combustion type compressed air energy storage system; the non-supplementary combustion route construction and transformation sub-strategy is used to construct a non-supplementary combustion type compressed air energy storage system; the supplementary combustion type compressed air energy storage system and the non-supplementary combustion type compressed air energy storage system have different equipment compositions and rated power.

8. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 7, characterized in that, The target compression and storage modification sub-strategy is determined based on the following steps: If the associated gas data is greater than the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the combustion route construction and transformation sub-strategy. If the associated gas data is less than or equal to the fifth preset threshold, the target compression and storage transformation sub-strategy corresponding to the depleted oil and gas reservoir to be developed is determined to be the non-refueling route construction and transformation sub-strategy.

9. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 7, characterized in that, The attribute data also includes reservoir core sample test data; The rated power of the equipment corresponding to the supplementary combustion type compressed air energy storage system includes the total rated power of the compressor and the rated power of the gas turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The rated power of the gas turbine is determined based on the rated operating time of the gas turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core sample, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

10. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to claim 9, characterized in that, The rated power of the non-combustion compressed air energy storage system includes the total rated power of the compressor and the total rated power of the air turbine, wherein: The total rated power of the compressor is determined based on the operating pressure corresponding to the gas storage of the depleted oil and gas reservoir, the rated working time of the compressor, the test data of the reservoir core samples, and the average temperature of the reservoir corresponding to the depleted oil and gas reservoir to be developed. The total rated power of the air turbine is determined based on the rated operating time of the air turbine, the operating pressure corresponding to the gas storage tank of the depleted oil and gas reservoir, the test data of the reservoir core samples, and the average reservoir temperature corresponding to the depleted oil and gas reservoir to be developed.

11. The method for developing depleted oil and gas reservoirs using compressed air energy storage according to any one of claims 7-10, characterized in that, The supplemental combustion type compressed air energy storage system includes supporting equipment for the first depleted oil and gas reservoir gas storage facility and supplemental combustion ground equipment; The sub-strategy for constructing and modifying the supplementary combustion route is to first construct the supporting equipment for the gas storage facility of the first depleted oil and gas reservoir, then construct the natural gas replenishment station in the supplementary combustion ground equipment, and finally construct the other supplementary combustion ground equipment besides the natural gas replenishment station in the supplementary combustion ground equipment. The non-combustion compressed air energy storage system includes supporting equipment for the second depleted oil and gas reservoir gas storage facility and non-combustion ground equipment. The non-refueling route construction and modification sub-strategy is used to first exhaust all associated gas in the depleted oil and gas reservoir to be developed, then construct the gas storage facility and supporting equipment for the second depleted oil and gas reservoir, and finally construct the non-refueling ground equipment.

12. A compressed air energy storage development device for depleted oil and gas reservoirs, characterized in that, include: The acquisition module is used to acquire attribute data corresponding to depleted oil and gas reservoirs to be developed. The attribute data includes core sample test data of the caprock, sand production index, and associated gas data; The first determining module is used to determine the sealing performance test results of the depleted oil and gas reservoir to be developed based on the test data of the caprock core sample. The second determining module is used to determine the sand production detection results corresponding to the depleted oil and gas reservoir to be developed based on the sand production index. The third determining module is used to determine the target compression and storage development strategy for the depleted oil and gas reservoir to be developed, provided that both the sealing test results and the sand production test results are qualified. The target compression and storage development strategy includes a target sand control sub-strategy and a target compression and storage transformation sub-strategy. The target sand control sub-strategy is determined based on the sand production type and the sand production index of the depleted oil and gas reservoir to be developed. The target compression and storage transformation sub-strategy is determined based on the associated gas data of the depleted oil and gas reservoir to be developed.

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