Oil well sand production prevention method and device based on full life cycle management, electronic equipment and storage medium
By conducting sand production prediction analysis before oil well development and adjusting sand control strategies in real time during development, the problem of sand production prevention throughout the entire life cycle of oil wells has been solved, achieving stable downhole production that is both safe and economical.
Patent Information
- Application Number
- CN202511317197.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2026-01-20
AI Technical Summary
Existing technologies have failed to achieve effective management throughout the entire life cycle of oil well sand prevention, leading to frequent downhole safety accidents and economic losses. Furthermore, temporary measures are difficult to sustainably and effectively prevent sand production.
By constructing an experimental model before oil well development to predict and analyze sand production, cementing and completion strategies are determined. During the development process, sand production, production differential pressure, and production intensity are monitored in real time, and sand control strategies are dynamically adjusted to reduce sand production risks. Experimental simulation and data analysis are used to optimize the selection and use of sand control devices.
It has achieved effective sand control throughout the entire life cycle of oil wells, reduced downhole risks and economic losses, and ensured the safe production and long-term stability of oil wells.
Smart Images
Figure CN121363399A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of oil development, and particularly relates to an oil well sand prevention method and device based on whole life cycle management, an electronic device and a storage medium. BACKGROUND
[0002] Sand prevention is a crucial link in the process of oil and gas production, and improper sand prevention can easily cause downhole safety accidents and cause huge economic losses. At present, temporary measures are mostly used for sand prevention during sand control, and the sand prevention effect in the whole life cycle of the oil well is not considered. Therefore, how to establish a sand prevention method capable of whole life cycle management is urgently to be solved. SUMMARY
[0003] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.
[0004] To this end, a first object of the present disclosure is to provide an oil well sand prevention method based on whole life cycle management to improve the sand prevention effect in the whole life cycle of the oil well.
[0005] A second object of the present disclosure is to provide an oil well sand prevention device based on whole life cycle management.
[0006] A third object of the present disclosure is to provide an electronic device.
[0007] A fourth object of the present disclosure is to provide a computer-readable storage medium.
[0008] A fifth object of the present disclosure is to provide a computer program product.
[0009] To achieve the above objects, a first aspect of the present disclosure provides an oil well sand prevention method based on whole life cycle management, comprising:
[0010] In the process that the oil well is in the stage of being developed, an experimental model of the oil well is constructed, sand production prediction analysis is performed based on the experimental model, a well cementation and completion strategy is determined according to the sand production prediction analysis result, and sand control treatment is performed on the oil well before development according to the well cementation and completion strategy.
[0011] In the process that the oil well is in the stage of being developed, the sand production situation, production pressure difference and liquid production intensity of the oil well are detected, and the production pressure difference threshold range and the liquid production intensity threshold range are determined according to the detection result. If the production pressure difference is not in the production pressure difference threshold range and / or the liquid production intensity is not in the liquid production intensity threshold range, a sand prevention and control strategy corresponding to the detection result is selected to perform sand prevention and control treatment on the oil well.
[0012] Optionally, the sand production prediction analysis based on the experimental model comprises:
[0013] The core flow experiment and / or the sand sensitivity experiment are performed on the experimental model to obtain core flow experiment data and / or sand sensitivity experiment data;
[0014] Data analysis is performed on the core flow experiment data and / or the sand sensitivity experiment data to obtain a core sand critical flow rate and / or a sand critical force;
[0015] The sand production prediction analysis is performed according to the core sand critical flow rate and / or the sand critical force.
[0016] Optionally, the core flow experiment data and / or the sand sensitivity experiment data are subjected to at least one of the following data analyses:
[0017] Engineering analogy analysis;
[0018] Numerical simulation analysis.
[0019] Optionally, the well cementing and completion strategy is determined according to the sand production prediction analysis result, comprising:
[0020] An oil well development strategy of the oil well is obtained;
[0021] The well cementing and completion strategy is determined in combination with the oil well development strategy and the sand production prediction analysis result.
[0022] Optionally, the well cementing and completion strategy comprises at least one of:
[0023] A corresponding formula parameter of a cement slurry system to be used;
[0024] A completion device to be used.
[0025] Optionally, the sand production prevention strategy comprises at least one of:
[0026] A production pressure difference adjustment mode;
[0027] A fluid production mode;
[0028] A tubing running tool to be used;
[0029] A downhole sand control string to be used.
[0030] Optionally, the sand production prevention strategy corresponding to the detection result is selected to perform sand control on the oil well, comprising:
[0031] An initial sand production prevention strategy corresponding to the detection result is selected;
[0032] Based on the initial sand control strategy, sand risk prediction is performed on the oil well to obtain a sand risk value corresponding to the oil well. If the sand risk value is greater than a sand risk threshold value, the initial sand control strategy of the oil well is adjusted until the sand risk value is not greater than the sand risk threshold value, and a sand control strategy is obtained to perform sand control management on the oil well according to the sand control strategy.
[0033] To achieve the above purpose, the second aspect of the present disclosure provides an oil well sand prevention device based on full life cycle management, comprising:
[0034] The simulation experiment unit is configured to construct an experimental model of the oil well during the process that the oil well is in the development stage, perform sand prediction analysis based on the experimental model, determine a cementing and completion strategy according to the sand prediction analysis result, and perform sand control management on the oil well before development according to the cementing and completion strategy.
[0035] The oil well detection unit is configured to detect sand production, production pressure difference and liquid production intensity of the oil well during the process that the oil well is in the development stage, determine a production pressure difference threshold range and a liquid production intensity threshold range according to the detection result, and perform sand control management on the oil well by selecting a sand control strategy corresponding to the detection result if the production pressure difference is not in the production pressure difference threshold range and / or the liquid production intensity is not in the liquid production intensity threshold range.
[0036] To achieve the above purpose, the third aspect of the present disclosure provides an electronic device, comprising a processor and a memory connected with the processor;
[0037] The memory stores computer execution instructions;
[0038] The processor executes the computer execution instructions stored in the memory to implement the method shown in any one of the first aspect.
[0039] To achieve the above purpose, the fourth aspect of the present disclosure provides a computer readable storage medium, which stores computer execution instructions. When the computer execution instructions are executed by a processor, the computer execution instructions are used to implement the method shown in any one of the first aspect.
[0040] To achieve the above purpose, the fifth aspect of the present disclosure provides a computer program product, comprising a computer program. When the computer program is executed by a processor, the computer program implements the method shown in any one of the first aspect.
[0041] In summary, the method and device provided by the present disclosure use the sand production prediction analysis result of the oil well obtained by simulation experiment before the development of the oil well to determine the cementing and completion strategy according to the sand production prediction analysis result, so as to achieve the purpose of sand prevention and control before development. During the development of the oil well, the sand prevention and control strategy is determined by combining the sand production condition, the production pressure difference and the liquid production strength of the oil well, so as to reduce the sand production risk of the oil well. Therefore, the sand prevention and control effect of the oil well during the whole life cycle of the oil well can be improved.
[0042] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS
[0043] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:
[0044] Figure 1 A flowchart of an oil well sand prevention method based on whole life cycle management provided by an embodiment of the present disclosure;
[0045] Figure 2 A structural diagram of an oil well sand prevention device based on whole life cycle management provided by an embodiment of the present disclosure. DETAILED DESCRIPTION
[0046] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.
[0047] Sand production of oil and gas wells is a common problem in the middle and late stages of oil wells. Sand production can cause damage to pipe strings and downhole tools, formation damage, reduction of oil and water well production, and even production stoppage, which seriously affects the sustainable production capacity of oil wells. With the continuous maturity of oil well exploitation technology, deep, high-temperature and high-pressure reservoirs have high reservoir permeability and fine pore throats, which are prone to sand production. Deep high-temperature reservoirs prone to sand production have become an important factor restricting the development effect of oil wells.
[0048] However, the current treatment for sand production in oil wells mainly adopts temporary measures, without considering the continuation period of sand production, and it is difficult to effectively inhibit and control sand production. The main sand control measures for oil wells include plugging, flushing sand control and flushing sand control, and sand control pipe string, sand control screen and sand control bridge plug are relatively common sand control tools, devices (instruments). At present, during the process of oil well exploitation, according to the sand production condition in the well, downhole sand control devices such as sand plug, sand control bridge plug, flushing pipe string, downhole sand control pipe string and sand control cone are used in sequence to plug and prevent sand. However, there are several problems: first, when using downhole sand control devices, corresponding downhole operation tools such as drilling and milling are needed. If the preventive measures are not appropriate or the temporary plugging measures are not timely, the oil well will be scrapped; second, if the temporary measures in the well do not have sand control effect, the oil well will still produce sand, which will cause serious production management problems, even cause production stoppage and economic loss; third, the sand control principles and adaptability to well conditions of downhole sand control devices are different, and too many sand control devices are difficult to achieve life cycle management; finally, the configuration of downhole sand control devices is not appropriate, and the adaptability to well conditions, production and production stage of sand control devices are not considered, which causes a substantial increase in cost and risk. The key to oil well sand control problem is prevention, therefore, how to effectively prevent oil well sand production is very important.
[0049] To solve the above problems, it is urgent to establish a sand control method for the whole life cycle of oil well development, realize the monitoring and prevention of oil well, prevent oil well sand production in time, and effectively carry out downhole sand control operation to reduce economic loss.
[0050] The present disclosure will be described in detail below with specific embodiments.
[0051] In the first embodiment, as shown in Figure 1 , Figure 1 A flowchart of an oil well sand prevention method based on whole life cycle management provided by the embodiment of the present disclosure is shown. The method can be realized by relying on a computer program and can run on a device for preventing oil well sand based on whole life cycle management. The computer program can be integrated in an application or run as an independent tool application.
[0052] The oil well sand prevention device based on whole life cycle management can be an electronic device with the function of oil well sand prevention based on whole life cycle management.
[0053] The oil well sand prevention method based on whole life cycle management can be executed by an electronic device.
[0054] The oil well sand prevention method based on whole life cycle management can include the following steps:
[0055] S101, during the process that the oil well is in the stage of being developed, an experimental model of the oil well is constructed, sand production prediction analysis is performed based on the experimental model, a well cementing and completion strategy is determined according to a result of the sand production prediction analysis, and pre-development sand control treatment is performed on the oil well according to the well cementing and completion strategy.
[0056] According to some embodiments, the experimental model is a model similar to the prototype of the oil well but with a reduced scale according to the similarity principle. Experimental research is performed on the experimental model, and the experimental results can be converted to the prototype.
[0057] In some embodiments, when the sand production prediction analysis is performed based on the experimental model, indoor experimental simulation can be performed on the experimental model, including but not limited to core flow experiments, sand sensitivity experiments, etc.
[0058] For example, the core flow experiment can be performed on the experimental model to obtain core flow experimental data. Data analysis is performed on the core flow experimental data to obtain a core sand critical flow rate. The sand production prediction analysis is performed according to the core sand critical flow rate.
[0059] For example, the sand sensitivity experiment can also be performed on the experimental model to obtain sand sensitivity experimental data. Data analysis is performed on the sand sensitivity experimental data to obtain a sand critical force. The sand production prediction analysis is performed according to the sand critical force. The sand critical force includes but is not limited to a sand critical shear stress and a maximum shear stress.
[0060] For example, the core flow experiment and the sand sensitivity experiment can also be performed on the experimental model to obtain core flow experimental data and sand sensitivity experimental data. Data analysis is performed on the core flow experimental data and the sand sensitivity experimental data to obtain a core sand critical flow rate and a sand critical force. The sand production prediction analysis is performed according to the core sand critical flow rate and the sand critical force.
[0061] In some embodiments, when the data analysis is performed on the core flow experimental data and / or the sand sensitivity experimental data, the data analysis method includes but is not limited to engineering analogy analysis and numerical simulation analysis.
[0062] According to some embodiments, when the well cementing and completion strategy is determined according to the result of the sand production prediction analysis, the oil well development strategy of the oil well can also be obtained. The well cementing and completion strategy is determined in combination with the oil well development strategy and the result of the sand production prediction analysis. Therefore, the reliability of the selection of the well cementing and completion strategy can be improved.
[0063] In some embodiments, the well cementing and completion strategy includes but is not limited to at least one of the following:
[0064] The formula parameters of the cement slurry system used;
[0065] The completion device used, wherein the completion device includes but is not limited to a packer, a tubing sand control device, a screen pipe, etc.
[0066] For example, for an oil well in a development stage, indoor core flow experiments are performed according to reservoir physical parameters to determine the core sand critical flow rate. If the core sand critical flow rate is greater than the core sand critical flow rate threshold, it indicates that the reservoir of the oil well has sand production. In this case, if the ratio between the core sand critical flow rate and the formation flow rate is less than 0.03, the sand production critical shear stress and the maximum shear stress can be analyzed according to the indoor sand sensitivity experiment, and then the cement slurry formulation in the range of the sand production critical shear stress and the maximum shear stress can be determined. If the ratio between the core sand critical flow rate and the formation flow rate is in the range of 0.03-0.1, the tubing sand production carding device completion is preferred. If the ratio between the core sand critical flow rate and the formation flow rate is greater than 0.1, the screen pipe bridge plugging completion is preferred.
[0067] In some embodiments, when the screen pipe bridge plugging completion is selected, the screen pipe bridge plugging parameters need to be determined. For example, the greater the ratio between the sand critical flow rate and the formation flow rate, the smaller the ratio between the bridge plugging size and the screen hole size of the selected screen pipe. After the screen pipe bridge plugging parameters are determined, the corresponding formulation parameters of the cement slurry system are selected according to the screen pipe material.
[0068] It should be noted that, before the development of the oil well, the cementing completion mode of the oil well is determined by combining the indoor experiment simulation and the sand production prediction result. Different sand production risk factors are comprehensively analyzed before the oil well is produced, and the customized design of the cementing mode and the sand control measures is performed according to the sand production risk of the oil well. The cementing quality of the oil well and the sand control effect of the oil well can be ensured in the most effective and economic way.
[0069] S102, during the development stage of the oil well, the sand production condition, the production pressure difference and the liquid production intensity of the oil well are detected, and the production pressure difference threshold range and the liquid production intensity threshold range are determined according to the detection result. If the production pressure difference is not in the production pressure difference threshold range and / or the liquid production intensity is not in the liquid production intensity threshold range, the sand control strategy corresponding to the detection result is selected to control the sand of the oil well.
[0070] According to some embodiments, the sand production condition of the oil well can be determined by detecting the ratio between the core sand critical flow rate and the formation flow rate. For example, if the cementing completion strategy indicates that the screen pipe bridge plugging completion is adopted, the sand production risk can be considered comprehensively when the screen pipe bridge plugging design is performed, and the sand production limit is set as the ratio between the core sand critical flow rate and the formation flow rate is less than 0.04, that is, when the ratio between the core sand critical flow rate and the formation flow rate is not less than 0.04, the sand production condition of the oil well is sand production.
[0071] In some embodiments, the production pressure difference and the liquid production intensity of the oil well can be obtained by installing a pressure gauge or an oil nozzle on the ground to monitor the oil well ground production and the bottom hole flowing pressure in real time.
[0072] According to some embodiments, the production pressure difference range is 4-12 MPa, and according to the detection result of the sand production condition of the oil well, a production pressure difference threshold range can be selected from the production pressure difference range. For example, the selected production pressure difference threshold range can be 6-10 MPa.
[0073] In some embodiments, the fluid production intensity range is 10-30 m 3 / (d·m), and according to the detection result of the sand production condition of the oil well, a fluid production intensity threshold range can be selected from the fluid production intensity range. For example, the selected fluid production intensity threshold range can be 10-20 m 3 / (d·m).
[0074] According to some embodiments, the sand production prevention and control strategy includes at least one of the following:
[0075] a production pressure difference adjustment mode;
[0076] a fluid production mode;
[0077] a tubing running tool used;
[0078] a downhole sand control string used.
[0079] According to some embodiments, the production pressure difference adjustment mode can be selected by shutting down the well for a predetermined period of time and detecting the oil pressure drop.
[0080] For example, if the well is shut down for 12 hours and the oil pressure drop is less than 0.2 MPa, the production pressure difference is reduced, if the well is shut down for 12 hours and the oil pressure drop is greater than 0.2 MPa, the production pressure difference is increased; if the well is shut down for 24 hours and the oil pressure drop is less than 0.4 MPa, the production pressure difference is reduced, if the well is shut down for 24 hours and the oil pressure drop is greater than 0.4 MPa, the production pressure difference is increased.
[0081] In some embodiments, the specific adjustment amount of the production pressure difference can be determined according to the specific value of the oil pressure drop. The production pressure difference can be adjusted by adjusting the wellhead casing pressure. For example, sand control mortar can be injected into the casing or a wellhead casing pressure injection tool can be used to inject sand control mortar into the casing to adjust the production pressure difference.
[0082] According to some embodiments, the fluid production mode includes but is not limited to single production, intermittent fluid production, downhole oil and gas conversion production, and downhole oil and gas conversion fluid production. The correlation between the fluid production mode and the sand production condition, the production pressure difference and the fluid production intensity of the oil well can be determined by experimental simulation, and then the corresponding fluid production mode can be selected according to the detection result.
[0083] For example, when the sand production prevention and control strategy indicates that the fluid production mode needs to be adjusted from single production to intermittent fluid production, an intermittent fluid control valve can be installed on the upper part of the tubing running tool or an artificial lift string and tubing running tool combination production mode can be used for intermittent fluid production.
[0084] According to some embodiments, the tubing downhole tool includes but is not limited to a tubing downhole sand control tool, a downhole string anti-liquefaction sand control tool, etc. The use effect of each tubing downhole tool under different sand production conditions, production pressure differentials and fluid production intensities of oil wells can be determined through experimental simulation, and then the corresponding tubing downhole tool can be selected according to the detection result.
[0085] In some embodiments, the tubing downhole sand control tool includes but is not limited to a sand control nipple. The sand control nipple includes but is not limited to a tubing sand control tool nipple, a packer with a flow control valve, etc. The tubing sand control tool nipple includes but is not limited to a tubing sand control tool anti-erosion nipple, etc.
[0086] In some embodiments, the downhole string anti-liquefaction sand control tool includes but is not limited to an anti-liquefaction downhole packer.
[0087] Taking one scenario as an example, when the sand control strategy indicates that the liquid production mode adopts intermittent liquid production mode and the tubing downhole tool used is a tubing sand control tool anti-erosion nipple, the tubing sand control tool anti-erosion nipple can be installed on the tubing, wherein the tubing sand control tool anti-erosion nipple includes a radial flow passage, a nozzle and a lower erosion piston valve connected in sequence, the packer with a flow control valve includes a radial flow passage, a nozzle and a lower erosion piston valve connected in sequence, a flow control passage is arranged above the nozzle, one end of the flow control passage is communicated with the upper joint, the flow control passage is installed on the flow control chamber of the nozzle, the flow of the nozzle is adjusted by using the flow control passage of the nozzle, the intermittent liquid production of the oil well is realized, the nozzle is installed on the packer with a flow control valve, the nozzle is connected with the radial flow passage through the lower erosion piston valve, the liquid is flushed from the nozzle to the lower erosion piston valve through the flow control passage at the installation interval of the tubing, the internal debris of the nozzle is flushed, the nozzle is kept unobstructed, the lower part of the nozzle is connected with the flow control chamber through the tubing, the lower erosion piston valve is sealed with the flow control chamber by the sealing rubber ring of the flow control chamber, the lower erosion piston valve is flushed, the flushed lower erosion piston valve continues to flow into the underground through the radial aperture of the nozzle, and the sand control production of the oil well is realized.
[0088] According to some embodiments, when the sand control strategy corresponding to the detection result is selected to carry out sand control management on the oil well, the initial sand control strategy corresponding to the detection result can be selected; based on the initial sand control strategy, the sand production risk of the oil well is predicted to obtain the sand production risk value corresponding to the oil well, if the sand production risk value is greater than the sand production risk threshold value, the initial sand control strategy of the oil well is adjusted until the sand production risk value is not greater than the sand production risk threshold value, the sand control strategy is obtained, and the sand control management on the oil well is carried out according to the sand control strategy.
[0089] In some embodiments, during the development of the oil well, based on the sand production risk value, in combination with the comprehensive adjustment scheme of the oil reservoir, it is determined whether the production pressure difference needs to be changed, the liquid production method needs to be changed, the tubing downhole tool needs to be changed, or the downhole sand control pipe string needs to be changed, which can further improve the sand control effect.
[0090] In some embodiments, in the early stage of the development of the oil well, the sand production is not serious, therefore, only the sand production control strategy corresponding to the detection result needs to be selected, and the sand production risk prediction can be omitted; in the middle and late stages of the development of the oil well, the sand production is more and more serious, at this time, whether the initial sand production control strategy of the oil well needs to be adjusted is determined in combination with the sand production risk value, which can improve the sand control effect.
[0091] It should be noted that by monitoring the production condition of the oil well in real time according to the cementing and completion condition of the oil well, in combination with the sand production law of the oil well, the oil well is adjusted in the production process, and technical means such as wellbore flow state of the oil well are used, so as to effectively reduce the production risk of the oil well and ensure the normal production of the oil well. In addition, the sand production control strategy provided can be designed according to the sand production risk of the oil well, so as to meet the sand control effect of different sand production risks of the oil well, effectively reduce the sand control cost of the oil well, and realize the long-term stable production of the oil well.
[0092] In summary, the method provided in the embodiment, by including the cementing design, production and management of the oil well in the whole cycle into the management category, the sand production prediction analysis result of the oil well is obtained by using experimental simulation before the development of the oil well, the cementing and completion strategy is determined according to the sand production prediction analysis result, so as to achieve the purpose of sand control before development; during the development of the oil well, the sand production control strategy is determined by combining the sand production condition, the production pressure difference and the liquid production intensity of the oil well to reduce the sand production risk of the oil well, therefore, the cementing sand control, the sand control in the production process and the like of the oil well can be effectively assisted, the sand control can be effectively realized, the safe production of the oil well can be ensured, the sand control effect of the oil well in the whole life cycle can be improved, and the production safety of the oil well in the whole life cycle can be ensured.
[0093] In order to realize the above-mentioned embodiments, the disclosure further provides an oil well sand production prevention device based on whole life cycle management.
[0094] As shown in the Figure 2 The oil well sand production prevention device 200 based on whole life cycle management comprises:
[0095] The simulation experiment unit 201 is configured to, during the process that the oil well is in the stage of being developed, construct an experimental model of the oil well, perform sand production prediction analysis based on the experimental model, and determine a cementing and completion strategy according to a sand production prediction analysis result, so as to perform sand control before development of the oil well according to the cementing and completion strategy.
[0096] The oil well detection unit 202 is configured to detect the sand production condition, the production pressure difference and the fluid production strength of the oil well during the development stage of the oil well, obtain a first detection result, determine a production pressure difference threshold range and a fluid production strength threshold range according to the first detection result, and select a sand production prevention and control strategy corresponding to the detection result to prevent and control sand for the oil well if the production pressure difference is not in the production pressure difference threshold range and / or the fluid production strength is not in the fluid production strength threshold range.
[0097] Optionally, the simulation experiment unit 201 is configured to perform sand production prediction analysis based on the experimental model, and specifically configured to:
[0098] perform core flow experiment and / or sand sensitivity experiment on the experimental model to obtain core flow experiment data and / or sand sensitivity experiment data;
[0099] perform data analysis on the core flow experiment data and / or sand sensitivity experiment data to obtain core sand critical flow rate and / or sand critical force;
[0100] perform sand production prediction analysis according to the core sand critical flow rate and / or sand critical force.
[0101] Optionally, the simulation experiment unit 201 is configured to perform at least one of the following data analysis on the core flow experiment data and / or sand sensitivity experiment data:
[0102] engineering analogy analysis;
[0103] numerical simulation analysis.
[0104] Optionally, the simulation experiment unit 201 is configured to determine the well cementing and completion strategy according to the sand production prediction analysis result, and specifically configured to:
[0105] obtain the oil well development strategy of the oil well;
[0106] combine the oil well development strategy and the sand production prediction analysis result to determine the well cementing and completion strategy.
[0107] Optionally, the well cementing and completion strategy includes at least one of the following:
[0108] a formula parameter corresponding to a cement slurry system used;
[0109] a completion device used.
[0110] Optionally, the sand production prevention and control strategy includes at least one of the following:
[0111] a production pressure difference adjustment mode;
[0112] a fluid production mode;
[0113] a tubing running tool used;
[0114] a downhole sand control pipe string used.
[0115] Optionally, the oil well detection unit 202 is configured to select the sand control strategy corresponding to the detection result, and is specifically configured to:
[0116] select an initial sand control strategy corresponding to the detection result;
[0117] predict the sand risk of the oil well based on the initial sand control strategy, obtain a sand risk value corresponding to the oil well, and if the sand risk value is greater than a sand risk threshold, adjust the initial sand control strategy of the oil well until the sand risk value is not greater than the sand risk threshold, and obtain the sand control strategy, so as to sand control the oil well according to the sand control strategy.
[0118] It should be noted that the foregoing explanation and description of the oil well sand prevention method based on the whole life cycle management also applies to the oil well sand prevention device based on the whole life cycle management of the embodiment, which will not be described here.
[0119] In summary, the device provided by the embodiment of the present disclosure achieves the purpose of sand control before development by using the sand prediction and analysis result of the oil well before development to determine the cementing and completion strategy according to the sand prediction and analysis result; during the development of the oil well, the sand control strategy is determined by combining the sanding condition, production pressure difference and liquid production intensity of the oil well to reduce the sanding risk of the oil well, so as to improve the sand control effect of the oil well during the whole life cycle.
[0120] In order to realize the above-mentioned embodiments, the present disclosure further proposes an electronic device, comprising a processor and a memory connected with the processor; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory to realize the method provided by the foregoing embodiments.
[0121] In order to realize the above-mentioned embodiments, the present disclosure further proposes a computer readable storage medium, the computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to realize the method provided by the foregoing embodiments.
[0122] In order to realize the above-mentioned embodiments, the present disclosure further proposes a computer program product, comprising a computer program, the computer program is executed by the processor to realize the method provided by the foregoing embodiments.
[0123] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in the present disclosure comply with the relevant laws and regulations, and do not violate public order and good customs.
[0124] It should be noted that personal information collected from users should be used for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. Furthermore, such collection / sharing should only be conducted after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign an agreement / authorization that includes authorization of relevant user information before the user uses the function. In addition, any necessary steps must be taken to protect and safeguard access to such personal information data and ensure that others with access to personal information data comply with their privacy policies and procedures.
[0125] This disclosure is intended to provide implementation schemes for users to selectively prevent the use or access to their personal information data. Specifically, this disclosure is intended to provide hardware and / or software to prevent or block access to such personal information data. Once personal information data is no longer needed, risks can be minimized by restricting data collection and deleting data. Furthermore, where applicable, such personal information is de-identified to protect user privacy.
[0126] In the foregoing descriptions of the embodiments, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0127] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0128] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.
[0129] The logic and / or steps represented in flow diagrams or otherwise described herein, for example, can be considered as a sequence of instructions to implement logic functions, and can be realized in any computer-readable medium for use by an instruction execution system, apparatus, or device, such as a computer-based system, processor- containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. In the context of this specification, a "computer-readable medium" can be any means that can contain, store, communicate, propagate or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be a machine-readable storage device (e.g., magnetic, optical or other) a machine-readable storage diskette (e.g., floppy disk, optical disk, or CD-ROM), or a machine-readable volatile or non-volatile memory (e.g., RAM), or a machine-readable volatile or non-volatile memory (e.g., RAM). More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection having one or more wires (electrical connections), a portable computer diskette (magnetic), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM) or flash memory, an optical fiber, and a portable compact disc read-only memory (CD-ROM). Additionally, the computer-readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example, via an optical scanner, then compiled, interpreted, or otherwise processed, and stored in a computer memory in a manner that can be later retrieved and executed by a computer. In another implementation, where hardware is used, any of the following technologies can be used to implement the above-described embodiments: discrete logic circuitry having logic gates for implementing logic functions upon data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and so forth.
[0130] It should be understood that various aspects of the disclosure can be implemented in hardware, software, firmware or a combination thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. As such, in some embodiments, where hardware is used, any of the following technologies can be used to implement the above-described embodiments: discrete logic circuitry having logic gates for implementing logic functions upon data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and so forth.
[0131] Those skilled in the art can understand that all or part of the steps carried out by the above-mentioned embodiment method can be completed by a program instructing the relevant hardware, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.
[0132] In addition, each functional unit in each embodiment of the present disclosure can be integrated in one processing module, or each unit can exist physically independently, or two or more units can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.
[0133] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present disclosure have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present disclosure.
Claims
1. A method for preventing sand production in oil wells based on full life-cycle management, characterized in that, include: During the development phase of an oil well, an experimental model of the oil well is constructed, and sand production prediction analysis is performed based on the experimental model. Based on the sand production prediction analysis results, a cementing and completion strategy is determined, and sand control is carried out on the oil well before development according to the cementing and completion strategy. During the development phase of the oil well, the sand production, production pressure differential, and production fluid intensity of the oil well are monitored. Based on the monitoring results, the production pressure differential threshold range and the production fluid intensity threshold range are determined. If the production pressure differential is not within the production pressure differential threshold range and / or the production fluid intensity is not within the production fluid intensity threshold range, the sand production control strategy corresponding to the monitoring results is selected to control sand production in the oil well.
2. The method according to claim 1, characterized in that, The sand production prediction analysis based on the experimental model includes: Core flow experiments and / or sand-sensitive experiments were conducted on the experimental model to obtain core flow experimental data and / or sand-sensitive experimental data. Data analysis was performed on the core flow test data and / or sand-sensitive test data to obtain the critical flow velocity and / or critical force of the core sand. Sand production prediction analysis is performed based on the critical flow velocity and / or critical force of the core sand.
3. The method according to claim 2, characterized in that, Perform at least one of the following data analyses on the core flow test data and / or sand-sensitive test data: Engineering analogy analysis; Numerical simulation analysis.
4. The method according to claim 1, characterized in that, The process of determining the cementing and completion strategy based on sand production prediction analysis results includes: Obtain the well development strategy for the oil well; Based on the oil well development strategy and the sand production prediction analysis results, a cementing and completion strategy is determined.
5. The method according to claim 1, characterized in that, The cementing completion strategy includes at least one of the following: The formula parameters corresponding to the cementing slurry system used; The well completion equipment used.
6. The method according to claim 1, characterized in that, The sand discharge prevention strategy includes at least one of the following: Production pressure differential adjustment methods; Liquid collection method; The tubing downhole tool used; The downhole sand control tubing used.
7. The method according to claim 1, characterized in that, The step of selecting the sand control strategy corresponding to the detection results for sand control of the oil well includes: Select the initial sand discharge prevention strategy corresponding to the test results; Based on the initial sand production prevention strategy, the sand production risk of the oil well is predicted to obtain the corresponding sand production risk value of the oil well. If the sand production risk value is greater than the sand production risk threshold, the initial sand production prevention strategy of the oil well is adjusted until the sand production risk value is not greater than the sand production risk threshold, and a sand production prevention strategy is obtained so as to carry out sand prevention and control of the oil well according to the sand production prevention strategy.
8. A sand-prevention device for oil wells based on full life-cycle management, characterized in that, include: The simulation experiment unit is used to construct an experimental model of the oil well during the process of the oil well being in the development stage, and to perform sand production prediction analysis based on the experimental model. Based on the sand production prediction analysis results, the cementing and completion strategy is determined so as to carry out sand control treatment of the oil well before development according to the cementing and completion strategy. The oil well detection unit is used to detect the sand production, production pressure difference, and production fluid intensity of the oil well during the development stage, and to determine the production pressure difference threshold range and the production fluid intensity threshold range based on the detection results. If the production pressure difference is not within the production pressure difference threshold range and / or the production fluid intensity is not within the production fluid intensity threshold range, then the sand production prevention strategy corresponding to the detection results is selected to carry out sand control treatment on the oil well.
9. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1 to 7.