Interlayer temporary plugging steering construction method and device
By calculating the stress and temporary plugging pressure of each perforation cluster and evaluating the temporary plugging efficiency, the problem of lack of quantitative evaluation of the temporary plugging effect between ultra-deep and thick reservoir layers in the prior art is solved, and the accuracy and efficiency of construction are improved.
Patent Information
- Application Number
- CN202311253989.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-26
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2043-09-26
AI Technical Summary
When evaluating the interlayer temporary blocking and steering effect of ultra-deep and huge thick reservoirs, the prior art lacks quantitative methods, resulting in low accuracy of evaluation results and inability to effectively guide on-site construction.
The stresses of each perforation cluster are calculated by logging data, and the temporary blocking pressure after entering the perforation hole is combined with the temporary blocking agent, the temporary blocking efficiency is calculated, and whether to continue to carry out temporary blocking and steering construction.
Quantitative evaluation of the steering effect of temporary blockage between layers is achieved, the accuracy and efficiency of construction is improved, and the construction risks and costs are reduced.
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Figure CN119711997A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of reservoir transformation for oil and gas field development, and in particular to an interlayer temporary plugging and diverting construction method and device. Background Art
[0002] For ultra-deep and thick reservoirs, early transformation was mainly based on the overall transformation of the entire wellbore. Due to the strong vertical heterogeneity of the reservoir and the uneven development of natural fractures, it is difficult to achieve uniform transformation of the thick reservoir in the vertical direction through the overall transformation, and the production capacity of each oil and gas layer cannot be fully utilized, resulting in poor post-compression effect and failure to maximize production capacity. At present, the improvement of the vertical utilization of thick reservoirs is mainly achieved through layered transformation. According to different reservoir conditions and completion string structures, a variety of layered transformation process technologies have been formed, such as using various mechanical tools (bridge plugs, sliding sleeve packers, continuous tubing hydraulic jets, etc.) to achieve layered transformation; non-mechanical layered transformation processes include: temporary plugging layered transformation, extreme flow limiting layered transformation, various chemical plug layered transformation, etc.
[0003] In view of the extreme working conditions of ultra-deep, ultra-high temperature and ultra-high pressure in the frontal area of Kuqa, the mechanical layering operation cycle is long, the cost is high and the construction risk is high. At present, the interlayer temporary plugging and diversion is mainly used to improve the degree of vertical transformation. The temporary plugging and diversion process adds a certain concentration of combined temporary plugging balls to the fracturing fluid, reaches the position of the crack opening during the pumping process, forms a temporary plugging, and prevents subsequent fluid from entering the formation, that is, by plugging the cracks connected to the perforation holes, the continuous inflow of fluid into the holes is prevented, and the perforation holes are indirectly temporarily plugged.
[0004] At present, there are two main methods for evaluating the effect of temporary plugging and diverting: direct method and indirect method. Direct evaluation methods for ultra-deep layers (microseismic, optical fiber, etc.) are affected by high temperature and high pressure, with low monitoring accuracy, high cost, and poor monitoring effect. Indirect methods are mainly based on the changes in ground construction pressure during the diverting process, the changes in crack extension pressure before and after temporary plugging and diverting, and the changes in instantaneous pump stop pressure before and after temporary plugging and diverting. The simple evaluation of whether the diverting is successful or failed based on the changes in pressure is often accompanied by strong subjectivity, which greatly reduces the accuracy of the evaluation results. Therefore, there is an urgent need for a method that can quickly and quantitatively evaluate the effect of temporary plugging and diverting without the use of auxiliary monitoring technology to guide on-site temporary plugging and diverting construction. Summary of the invention
[0005] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the first aspect of the present invention proposes a temporary plugging and diverting construction method between layers, comprising:
[0006] Calculate the stress of each perforation cluster based on the logging data;
[0007] Calculate the temporary plugging pressure after the temporary plugging agent enters the perforation hole;
[0008] calculating temporary plugging efficiency according to the temporary plugging pressure and the stress of each perforation cluster;
[0009] Whether to continue the temporary plugging and diverting construction is determined according to the temporary plugging efficiency.
[0010] Preferably, the stress of each perforation cluster is calculated based on the logging data, including: calculating the minimum horizontal principal stress profile of the target layer section of the fracturing well in the vertical direction based on the logging data, marking the perforation depth of each perforation cluster and the minimum horizontal principal stress at the depth; wherein the logging data includes density logging data, sonic logging data, gamma logging data and natural potential logging data.
[0011] Preferably, calculating the temporary plugging pressure after the temporary plugging agent enters the perforation hole includes: reading the ground construction pressure before temporary plugging and the ground construction pressure after temporary plugging at the same construction displacement according to the fracturing construction curve, and taking the difference between the two as the temporary plugging pressure.
[0012] Preferably, calculating the temporary plugging efficiency according to the temporary plugging pressure and the stress of each perforation cluster includes:
[0013] Determine the minimum value of the minimum horizontal principal stress corresponding to all perforation clusters;
[0014] The sum of the minimum value and the temporary plugging pressure is used as a determination threshold;
[0015] Comparing the minimum horizontal principal stress corresponding to each perforation cluster with the determination threshold in sequence;
[0016] If the minimum horizontal principal stress corresponding to the perforation cluster is greater than the determination threshold, it is determined that the perforation cluster is filled with liquid; otherwise, it is determined that the perforation cluster is not filled with liquid;
[0017] The ratio of the number of liquid-injected perforation clusters to the number of total perforation clusters is taken as the temporary plugging efficiency.
[0018] Preferably, determining whether to continue the temporary plugging and diverting construction is based on the temporary plugging efficiency, including: when it is determined that the temporary plugging efficiency is greater than a preset value, determining that there is no need to continue the temporary plugging and diverting construction; otherwise, repeating the diverting construction until the temporary plugging efficiency is greater than the preset value.
[0019] The second aspect of the present invention provides an interlayer temporary plugging and diverting construction system, comprising:
[0020] A first calculation module is used to calculate the stress of each perforation cluster according to the well logging data;
[0021] The second calculation module is used to calculate the temporary plugging pressure after the temporary plugging agent enters the perforation hole;
[0022] A third calculation module is used to calculate the temporary plugging efficiency according to the temporary plugging pressure and the stress of each perforation cluster;
[0023] The steering determination module is used to determine whether to continue the temporary blocking and steering construction according to the temporary blocking efficiency.
[0024] Preferably, the method executed by the first calculation module includes: calculating the minimum horizontal principal stress profile of the target layer section of the fracturing well in the vertical direction according to the logging data, marking the perforation depth of each perforation cluster and the minimum horizontal principal stress at the depth; the logging data includes density logging data, sonic logging data, gamma logging data and natural potential logging data.
[0025] Preferably, the method executed by the second calculation module includes: reading the ground construction pressure before temporary plugging and the ground construction pressure after temporary plugging at the same construction displacement according to the fracturing construction curve, and taking the difference between the two as the temporary plugging pressure.
[0026] Preferably, the method performed by the third computing module includes:
[0027] Determine the minimum value of the minimum horizontal principal stress corresponding to all perforation clusters;
[0028] The sum of the minimum value and the temporary plugging pressure is used as a determination threshold;
[0029] Comparing the minimum horizontal principal stress corresponding to each perforation cluster with the determination threshold in sequence;
[0030] If the minimum horizontal principal stress corresponding to the perforation cluster is greater than the determination threshold, it is determined that the perforation cluster is filled with liquid; otherwise, it is determined that the perforation cluster is not filled with liquid;
[0031] The ratio of the number of liquid-injected perforation clusters to the number of total perforation clusters is taken as the temporary plugging efficiency.
[0032] A third aspect of the present invention provides a computer-readable storage medium, in which a computer program or instructions are stored; when the computer program or instructions are executed by a processor, they are at least used to implement the above method.
[0033] Compared with the prior art, the present invention has the following beneficial effects:
[0034] First, the present invention can realize quantitative evaluation of the steering effect. The traditional calculation method can only rely on the change of ground construction pressure to judge whether the steering is successful or failed. However, there is no quantitative standard for the success or failure of the steering, and the relationship between the steering effect and the blocked perforation cluster is not established. The present invention observes the change of ground construction pressure in the steering stage, combines the minimum horizontal principal stress value of the perforation cluster, characterizes the specific number of perforation clusters that are filled with liquid after temporary plugging, and calculates the temporary plugging efficiency to achieve quantitative characterization of the steering effect. Secondly, the present invention can also be used to guide on-site steering construction. When there is no microseismic monitoring data, the traditional method can only rely on the size of the ground construction pressure change to guide the on-site construction. Since there is no quantitative judgment on the steering effect, the guidance of the on-site construction of the steering has great risks and uncertainties. The present invention calculates the ratio of the number of perforation clusters that are filled with liquid at the end of the steering to the total number of perforation clusters. When the calculated temporary plugging efficiency is low, it can guide the adjustment of the on-site steering agent and perform another steering construction. If the temporary plugging efficiency after the steering reaches the expected value, the next level of reservoir transformation construction can be carried out.
[0035] Compared with conventional direct evaluation methods, the analysis method of the present invention has high reliability and effectiveness, can realize real-time and quantitative evaluation of steering effect, and can also be used to guide on-site steering construction, with short operation time, reduced construction risk, and low operating cost, and can provide a scientific basis for improving the temporary plugging and steering process of ultra-deep and thick reservoirs.
[0036] In the next few years, deep natural gas production will account for more than 50% of total natural gas production, becoming an important successor resource for natural gas production. Therefore, there is a strong demand for evaluation and optimization of interlayer temporary plugging and diversion effects in ultra-deep and thick reservoirs. According to the deep layer, about 150 wells need to be fracturing and acidizing each year. Real-time evaluation and guidance of the optimization of on-site temporary plugging and diversion construction can improve the post-fracturing transformation effect. At the same time, it can guide the optimization of temporary plugging scale of neighboring wells in the same block, saving construction costs and further improving the ultra-deep transformation effect. According to the guidance of the optimization of on-site temporary plugging and diversion construction, the production after transformation is 2-3 times higher than that of neighboring wells, with significant economic benefits.
[0037] In summary, the method for judging the effect of interlayer temporary plugging and diversion provided by the present invention quantitatively evaluates the temporary plugging effect through the perforation cluster liquid injection efficiency, and the main technical problem solved is that the effect of real-time monitoring and diversion is poor when there is no auxiliary monitoring technology. Without the use of auxiliary monitoring technology, the effect of interlayer temporary plugging and diversion can be quickly and quantitatively evaluated to guide the success of on-site temporary plugging construction, which can provide a scientific basis for the improvement of temporary plugging and diversion technology in ultra-deep and thick reservoirs.
[0038] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.
[0039] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0041] Figure 1 A schematic diagram of a temporary plugging and diverting construction method between layers provided in an embodiment;
[0042] Figure 2 A schematic diagram of the minimum geostress profile and perforation cluster positions provided for an embodiment;
[0043] Figure 3 It is a schematic diagram of a temporary plugging and acid fracturing construction curve given in an embodiment;
[0044] Figure 4 A schematic diagram of a temporary plugging and diverting construction system between layers provided in an embodiment;
[0045] Figure 5 A schematic diagram of a computer-readable storage medium is provided for an embodiment. DETAILED DESCRIPTION
[0046] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0047] In order to solve the problem of lack of auxiliary monitoring technology in deep layers to monitor the steering effect in real time and realize the real-time and quantitative evaluation of the steering effect of ultra-deep and thick reservoirs, the present invention provides a method for judging the interlayer temporary plugging steering effect. The core of the present invention has three aspects: first, according to the logging data, the minimum horizontal principal stress profile of the target layer of the fracturing well in the vertical direction is calculated using the ground stress interpretation software, and the perforation depth of each perforation cluster and the minimum horizontal principal stress at the depth are marked; secondly, on the fracturing construction curve, the ground construction pressure before and after temporary plugging, the first ground construction pressure P1 and the second ground construction pressure P2 are accurately read under the same displacement; thirdly, according to the stress difference between each perforation cluster and the size relationship between the ground construction pressure difference before and after temporary plugging, the liquid absorption of each perforation section after temporary plugging can be judged, so as to obtain the temporary plugging efficiency after the addition of the temporary plugging agent to the well, and the steering effect after temporary plugging and steering can be judged, and the adjustment of the on-site steering agent can be guided to determine whether to perform another steering construction.
[0048] Figure 1 The interlayer temporary plugging and diverting construction method provided by the present invention comprises:
[0049] S101. Calculate the stress of each perforation cluster according to the logging data;
[0050] S102. Calculating the temporary plugging pressure after the temporary plugging agent enters the perforation hole;
[0051] S103. Calculating temporary plugging efficiency according to the temporary plugging pressure and the stress of each perforation cluster;
[0052] S104. Determine whether to continue the temporary plugging and diverting construction according to the temporary plugging efficiency.
[0053] According to some embodiments of the present invention, the stress of each perforation cluster is calculated based on logging data, including: calculating the minimum horizontal principal stress profile of the target layer section of the fracturing well in the vertical direction based on the logging data, marking the perforation depth of each perforation cluster and the minimum horizontal principal stress at the depth; wherein the logging data includes density logging data, sonic logging data, gamma logging data and natural potential logging data.
[0054] According to some embodiments of the present invention, calculating the temporary plugging pressure after the temporary plugging agent enters the perforation hole includes: reading the ground construction pressure before temporary plugging and the ground construction pressure after temporary plugging at the same construction displacement according to the fracturing construction curve, and taking the difference between the two as the temporary plugging pressure.
[0055] According to some embodiments of the present invention, the temporary plugging efficiency is calculated based on the temporary plugging pressure and the stress of each perforation cluster, including: determining the minimum value of the minimum horizontal principal stress corresponding to all perforation clusters; taking the sum of the minimum value and the temporary plugging pressure as the judgment threshold; comparing the minimum horizontal principal stress corresponding to each perforation cluster with the judgment threshold in sequence; if the minimum horizontal principal stress corresponding to the perforation cluster is greater than the judgment threshold, then the perforation cluster is judged to be filled with liquid; otherwise, the perforation cluster is judged to be not filled with liquid; the ratio of the number of perforation clusters filled with liquid to the total number of perforation clusters is taken as the temporary plugging efficiency. When it is determined that the temporary plugging efficiency is greater than the preset value, it is determined that there is no need to continue the temporary plugging diversion construction; otherwise, the diversion construction is repeated until the temporary plugging efficiency is greater than the preset value.
[0056] According to some embodiments of the present invention, a method for temporarily plugging and diverting construction between layers includes:
[0057] Step 1: Import the logging data into software such as Fracpro, Gohfer, and StimPlan, and use the geostress interpretation module of the above software to calculate the minimum horizontal principal stress profile of the target layer of the fracturing well in the vertical direction, mark the perforation depth of each perforation cluster and the minimum horizontal principal stress at the depth. It should be noted here that the fracturing well logging data mentioned in this step at least includes: density logging, acoustic logging, gamma logging, and natural potential logging.
[0058] Step 2: On the fracturing construction curve, accurately read the first surface construction pressure P1 before temporary plugging and the second surface construction pressure P2 after temporary plugging under the same construction displacement. The first surface construction pressure P1 and the second surface construction pressure P2 are the surface construction pressures during the diversion process. The process of temporary plugging agent plugging the perforation is the process in which the fluid enters the channel of the formed hydraulic fracture and the perforation becomes smaller, thereby causing the increase of friction resistance of the perforation perforation and finally causing the change of surface construction pressure.
[0059] Step three, calculate the difference between the second surface construction pressure P2 and the first surface construction pressure P1, which is the temporary plugging pressure P after the temporary plugging agent enters the perforation hole. At the same time, according to the principle of minimum seepage resistance, the fluid always enters along the perforation cluster with the smallest seepage resistance. Therefore, among the multiple perforation clusters of the fracturing well, the perforation cluster with the smallest horizontal principal stress is marked as the main liquid entry section, and the sum of the minimum horizontal principal stress value of the perforation cluster and the temporary plugging pressure P is recorded as P0. As long as P0 is greater than the minimum horizontal principal stress of other perforation clusters, it is considered that the perforation cluster has fluid after temporary plugging. If P0 is less than the minimum horizontal principal stress of other perforation clusters, it is considered that the perforation cluster has no fluid after temporary plugging. According to the ratio of the number of perforation clusters that have fluid after temporary plugging to the total number of perforation clusters, the temporary plugging efficiency after temporary plugging can be calculated. The theoretical basis of this step is that the temporary plugging efficiency of wells with larger steering pressure is better because when the liquid first enters the perforation section with the smallest ground stress, with the addition of temporary plugging agent, the perforation section that absorbs liquid first is blocked, and the liquid enters the perforation section with larger ground stress. The higher the steering pressure, the greater the stress difference between the perforation sections, so that the liquid can enter more perforation sections, and the better the temporary plugging efficiency.
[0060] Step 4: If the temporary plugging efficiency is greater than 60%, the next level of reservoir reconstruction construction can be carried out directly; if the temporary plugging efficiency is less than 60%, it means that the temporary plugging effect is poor. The dosage of the temporary plugging agent is adjusted on site, and the diversion construction is carried out again until the temporary plugging efficiency is greater than 60%.
[0061] The technical solution of the present invention is further described below in conjunction with embodiments.
[0062] The example well ks2-18 is located in the Kelasu structural zone of the Kuqa Depression. The well depth is 6897.6m and the drilled layer is the Cretaceous Bashkiqik Formation. The well section to be transformed is 6676-6858m. The transformation section has a large span of 182m. A total of 13 clusters of perforations are shot. The natural fractures are highly heterogeneous, making it difficult to achieve uniform transformation. Therefore, temporary plugging and layered transformation are used to achieve full vertical transformation of the reservoir. The steps of temporary plugging and layered transformation include:
[0063] Step 1: Import the logging data of KS2-18 well, including density logging, sonic logging, gamma logging, and natural potential logging, into the Gohfer fracturing software. Use the geostress interpretation module of the software to calculate the minimum horizontal principal stress profile of the target layer of the fracturing well in the vertical direction, and mark the perforation depth of each perforation cluster and the minimum horizontal principal stress at that depth, such as Figure 2 As shown in the figure, the dark rectangular blocks in the figure represent perforation clusters. The minimum horizontal principal stress of each perforation cluster in Well KS2-18 is statistically calculated and shown in Table 1.
[0064] Table 1
[0065]
[0066] Step 2: Figure 3 This is the temporary plugging acid fracturing construction curve of the example well ks2-18. On this fracturing construction curve, stage A is the construction stage before temporary plugging, stage B is temporary plugging, and stage C is the construction stage after temporary plugging. After the construction of stage A is completed, 90kg of 1-5mm temporary plugging balls and 45kg of 5-10mm temporary plugging balls are put in. After the combined temporary plugging balls reach the bottom of the well, the construction pressure increases and the same construction displacement of 1m 3 / min, the first ground construction pressure P1 before temporary plugging is 58.4MPa, and the second ground construction pressure P2 after temporary plugging is 61.5MPa.
[0067] Step 3: Calculate the difference between the second ground construction pressure P2 and the first ground construction pressure P1, which is the temporary plugging pressure P of 3.1 MPa after the temporary plugging agent enters the perforation hole. According to Table 1, the minimum horizontal principal stress of the perforation cluster of the ks2-18 well is 109.8 MPa for the first cluster. During construction, the liquid mainly enters the perforation section. After the temporary plugging agent is added, the liquid is forced to be diverted and temporarily plugged. The sum of the minimum horizontal principal stress value and the temporary plugging pressure P of the perforation cluster, P0, is 112.9 MPa. Since the maximum stress difference between the perforation clusters of the ks2-18 well is 4.4 MPa for the first cluster and the eighth cluster, which is greater than the temporary plugging and diversion pressure P of the well of 3.1 MPa, the liquid can only enter part of the perforation section after temporary plugging. It is calculated that the perforation clusters smaller than P0 are cluster 1, cluster 3, cluster 4, cluster 5, cluster 9, cluster 10, cluster 11, cluster 12, and cluster 13. A total of 9 perforation clusters can be filled with fluid after temporary plugging. According to the ratio of the number of perforation clusters that are filled with fluid after temporary plugging to the total number of perforation clusters, the temporary plugging efficiency of well KS2-18 is calculated to be 69.2%.
[0068] Step 4: The temporary plugging efficiency is greater than 60%, achieving the effect of temporary plugging and layered transformation, and the next level C stage reservoir transformation construction can be carried out directly.
[0069] Based on the same technical concept as the interlayer temporary plugging and diversion construction method, the present invention also provides an interlayer temporary plugging and diversion construction system, including: a first calculation module 201, used to calculate the stress of each perforation cluster according to the logging data; a second calculation module 202, used to calculate the temporary plugging pressure after the temporary plugging agent enters the perforation hole; a third calculation module 203, used to calculate the temporary plugging efficiency according to the temporary plugging pressure and the stress of each perforation cluster; a diversion determination module 204, used to determine whether to continue the temporary plugging and diversion construction according to the temporary plugging efficiency.
[0070] In addition, the present invention also provides a computer-readable storage medium 1100, which stores a computer program or instruction. When the computer program or instruction is executed by a processor, it is at least used to implement the above-mentioned interlayer temporary plugging and diversion construction method.
[0071] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A method for temporary plugging and diverting construction between layers, characterized in that: include: Calculate the stress of each perforation cluster based on the logging data; Calculate the temporary plugging pressure after the temporary plugging agent enters the perforation hole; calculating temporary plugging efficiency according to the temporary plugging pressure and the stress of each perforation cluster; Whether to continue the temporary plugging and diverting construction is determined according to the temporary plugging efficiency.
2. The interlayer temporary plugging and diverting construction method according to claim 1, characterized in that: Calculating the stress of each perforation cluster according to the logging data includes: calculating the minimum horizontal principal stress profile of the target layer section of the fracturing well in the vertical direction according to the logging data, marking the perforation depth of each perforation cluster and the minimum horizontal principal stress at the depth; wherein the logging data includes density logging data, sonic logging data, gamma logging data and natural potential logging data.
3. The interlayer temporary plugging and diverting construction method according to claim 2, characterized in that: Calculating the temporary plugging pressure after the temporary plugging agent enters the perforation hole includes: reading the ground construction pressure before temporary plugging and the ground construction pressure after temporary plugging at the same construction displacement according to the fracturing construction curve, and taking the difference between the two as the temporary plugging pressure.
4. The interlayer temporary plugging and diverting construction method according to claim 3, characterized in that: The temporary plugging efficiency is calculated according to the temporary plugging pressure and the stress of each perforation cluster, including: Determine the minimum value of the minimum horizontal principal stress corresponding to all perforation clusters; The sum of the minimum value and the temporary plugging pressure is used as a determination threshold; Comparing the minimum horizontal principal stress corresponding to each perforation cluster with the determination threshold in sequence; If the minimum horizontal principal stress corresponding to the perforation cluster is greater than the determination threshold, it is determined that the perforation cluster is filled with liquid; otherwise, it is determined that the perforation cluster is not filled with liquid; The ratio of the number of liquid-injected perforation clusters to the number of total perforation clusters is taken as the temporary plugging efficiency.
5. The interlayer temporary plugging and diverting construction method according to claim 4, characterized in that: Determining whether to continue the temporary blocking and diverting construction according to the temporary blocking efficiency includes: when it is determined that the temporary blocking efficiency is greater than a preset value, determining that there is no need to continue the temporary blocking and diverting construction; otherwise, repeating the diverting construction until the temporary blocking efficiency is greater than the preset value.
6. A temporary plugging and diverting construction system between layers, characterized in that: include: A first calculation module is used to calculate the stress of each perforation cluster according to the well logging data; The second calculation module is used to calculate the temporary plugging pressure after the temporary plugging agent enters the perforation hole; A third calculation module is used to calculate the temporary plugging efficiency according to the temporary plugging pressure and the stress of each perforation cluster; The steering determination module is used to determine whether to continue the temporary blocking and steering construction according to the temporary blocking efficiency.
7. The interlayer temporary plugging and diverting construction system according to claim 1, characterized in that: The method executed by the first calculation module includes: calculating the minimum horizontal principal stress profile of the target layer section of the fracturing well in the vertical direction according to the logging data, marking the perforation depth of each perforation cluster and the minimum horizontal principal stress at the depth; the logging data includes density logging data, sonic logging data, gamma logging data and natural potential logging data.
8. The interlayer temporary plugging and diverting construction system according to claim 2, characterized in that: The method executed by the second calculation module includes: reading the ground construction pressure before temporary plugging and the ground construction pressure after temporary plugging under the same construction displacement according to the fracturing construction curve, and taking the difference between the two as the temporary plugging pressure.
9. The interlayer temporary plugging and diverting construction system according to claim 3, characterized in that: The method performed by the third computing module includes: Determine the minimum value of the minimum horizontal principal stress corresponding to all perforation clusters; The sum of the minimum value and the temporary plugging pressure is used as a determination threshold; Comparing the minimum horizontal principal stress corresponding to each perforation cluster with the determination threshold in sequence; If the minimum horizontal principal stress corresponding to the perforation cluster is greater than the determination threshold, it is determined that the perforation cluster is filled with liquid; otherwise, it is determined that the perforation cluster is not filled with liquid; The ratio of the number of liquid-injected perforation clusters to the number of total perforation clusters is taken as the temporary plugging efficiency.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instruction; when the computer program or instruction is executed by the processor, it is at least used to implement the method described in claims 1-5.
Citation Information
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