CN117054312A - Rock stress sensitivity anisotropy detection method, system and equipment - Google Patents
Rock stress sensitivity anisotropy detection method, system and equipment Download PDFInfo
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- CN117054312A CN117054312A CN202311030900.6A CN202311030900A CN117054312A CN 117054312 A CN117054312 A CN 117054312A CN 202311030900 A CN202311030900 A CN 202311030900A CN 117054312 A CN117054312 A CN 117054312A
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- 239000011435 rock Substances 0.000 title claims abstract description 143
- 230000035945 sensitivity Effects 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 230000035699 permeability Effects 0.000 claims abstract description 89
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 230000003247 decreasing effect Effects 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 11
- 238000010146 3D printing Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 238000009417 prefabrication Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
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- Fluid Mechanics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a rock stress sensitivity anisotropy detection method, a system and equipment, and relates to the technical field of unconventional oil gas experiments. Obtaining a rock sample; prefabricating a sealed container with a cavity; presetting a testing direction of a dry rock sample, and placing the dry rock sample into a sealed container; performing a pressure boosting permeability test on a dry rock sample positioned in a cavity of a sealed container to obtain the permeability corresponding to each pressure value in a pressure boosting mode; and performing a depressurization permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the depressurization mode; obtaining an effective stress permeability curve of the dried rock sample in all directions according to the permeability corresponding to each pressure value in the pressure increasing mode and the permeability corresponding to each pressure value in the pressure decreasing mode; the effective stress permeability curve is used to characterize the rock stress sensitivity anisotropy. The invention improves the accuracy of the rock stress sensitivity anisotropy detection result.
Description
Technical Field
The invention relates to the technical field of unconventional oil gas experiments, in particular to a rock stress sensitivity anisotropy detection method, system and equipment.
Background
The rock has different pore or lamellar structures in different directions, wherein the compact sandstone oil gas and shale oil gas reservoirs in China generally develop near-horizontal layer reason seams, and the layer reason seams are important reservoir spaces and seepage channels of the compact sandstone and shale reservoirs. Thus, there is a significant difference in permeability in the horizontal and vertical directions. Therefore, anisotropic permeability is an important parameter measured when analyzing reservoir fluid flow dynamics.
Permeability is typically measured using a triaxial cell, while anisotropic permeability is typically measured using a cylindrical sample of core removed from the recovered core. However, sample heterogeneity can significantly affect test results. Cubic samples can eliminate the effect of inhomogeneities when measuring anisotropic permeability, but sealing is a major challenge limiting the use of this technique, with the problem of low accuracy of the test results.
Disclosure of Invention
The embodiment of the invention aims to provide a rock stress sensitivity anisotropy detection method, a system and equipment, so as to improve the accuracy of a rock stress sensitivity anisotropy detection result.
In order to achieve the above object, the embodiment of the present invention provides the following solutions:
a rock stress sensitivity anisotropy detection method, comprising:
obtaining a rock sample; drying the rock sample to obtain a dried rock sample;
prefabricating a sealed container with a cavity; the volume of the cavity is greater than the volume of the dry rock sample;
presetting a testing direction of the dry rock sample, and placing the dry rock sample into the sealed container;
performing a boosting permeability test on a dry rock sample positioned in a cavity of the sealed container to obtain the permeability corresponding to each pressure value in a boosting mode; and performing a depressurization permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the depressurization mode;
obtaining an effective stress permeability curve of the dry rock sample in all directions according to the permeability corresponding to each pressure value in the pressure increasing mode and the permeability corresponding to each pressure value in the pressure decreasing mode; the effective stress permeability curve is used to characterize rock stress sensitivity anisotropy.
Optionally, presetting the testing direction of the dry rock sample specifically includes: a perpendicular stacking direction, a first parallel stacking direction, and a second parallel stacking direction.
Optionally, the acquiring the rock sample specifically includes:
selecting a rock core column to be tested;
cutting a cube of NxMxWmm along the vertical bedding direction of the rock core column to obtain the rock sample 。
Optionally, drying the rock sample to obtain a dried rock sample specifically includes:
and placing the rock sample in a vacuum drying oven, and drying for T time at a preset temperature to obtain the dried rock sample.
Optionally, the prefabricated sealed container with the cavity specifically includes:
adopting a 3D printing technology to manufacture a rubber material into a sealed container with a cavity;
the sealed container is a sealed cylindrical container with a diameter of Amm and a height of Bmm;
the cavity is a hollow cube of X Y X Zmm.
Optionally, the pressure of the boost mode ranges from 5Mpa to 45Mpa; the pressure of the depressurization mode ranges from 45Mpa to 5Mpa.
Optionally, the effective stress is a difference between the confining pressure and the pore pressure of the dry rock sample.
In order to achieve the above purpose, the embodiment of the present invention further provides the following solutions:
a rock stress sensitivity anisotropy detection system, comprising:
the sample acquisition module is used for acquiring a rock sample; drying the rock sample to obtain a dried rock sample;
a container prefabrication module connected with the sample acquisition module and used for prefabricating a sealed container with a cavity; the volume of the cavity is greater than the volume of the dry rock sample;
the direction presetting module is connected with the sample acquisition module and used for presetting the testing direction of the dry rock sample and placing the dry rock sample into the sealed container;
the boosting and depressurizing module is connected with the container prefabricating module and is used for performing boosting permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the boosting mode; and performing a depressurization permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the depressurization mode;
the curve drawing module is connected with the boosting and depressurizing module and is used for obtaining an effective stress permeability curve of the dry rock sample in all directions according to the permeability corresponding to each pressure value in the boosting mode and the permeability corresponding to each pressure value in the depressurizing mode; the effective stress permeability curve is used to characterize rock stress sensitivity anisotropy.
An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the rock stress sensitivity anisotropy detection method when executing the computer program.
A non-transitory computer readable storage medium having stored thereon a computer program which when executed implements the rock stress sensitivity anisotropy detection method.
In the embodiment of the invention, the traditional cylindrical sample is replaced by prefabricating the sealed container with the cavity, when the anisotropic permeability is measured, the heterogeneity of the cylindrical sample has a remarkable influence on the test result, and the influence of the heterogeneity can be eliminated by drying the rock cube sample; the defect of heterogeneity of samples in the traditional mode is overcome. The testing direction of the dry rock sample is preset, permeability parameters of the rock sample in a specific direction can be tested, and the stress sensitivity anisotropic characteristic of the rock can be represented by the permeability difference through the permeability corresponding to each pressure value in a pressure increasing mode and the permeability corresponding to each pressure value in a pressure decreasing mode. The accuracy of the rock stress sensitivity anisotropy detection result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a rock stress sensitivity anisotropy detection method provided by an embodiment of the invention;
FIG. 2 is a detailed block diagram of a rock stress sensitivity anisotropy detection system provided by an embodiment of the invention;
fig. 3 is a schematic diagram of a 3D printing mold for sealing according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an experimental test direction provided in an embodiment of the present invention;
FIG. 5 is a schematic diagram of permeability in parallel bedding directions provided by an embodiment of the present invention;
FIG. 6 is a schematic illustration of permeability in the vertical bedding direction provided by an embodiment of the present invention.
Symbol description:
the device comprises a sample acquisition module-1, a container prefabrication module-2, a direction presetting module-3, a boosting and depressurizing module-4, a curve drawing module-5, a vertical layering direction-6, a first parallel layering direction-7 and a second parallel layering direction-8.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a rock stress sensitivity anisotropy detection method, a system and equipment, which are used for solving the problem of low accuracy of the existing rock stress sensitivity anisotropy detection result.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Fig. 1 shows an exemplary flow of a rock stress sensitivity anisotropy detection method as described above. The steps are described in detail below.
Step 1: obtaining a rock sample; drying the rock sample to obtain a dried rock sample;
the rock sample acquisition specifically comprises the following steps:
selecting a rock core column to be tested;
cutting a cube of NxMxWmm along the vertical bedding direction of the rock core column to obtain the rock sample 。
Drying the rock sample to obtain a dried rock sample specifically comprising:
and placing the rock sample in a vacuum drying oven, and drying for T time at a preset temperature to obtain the dried rock sample.
In one example, a rock core column to be measured is selected, cutting a cube with the specification of 15 multiplied by 15mm along the vertical layering direction of the core column, the rock sample was obtained, see fig. 3. Of course, those skilled in the art may also flexibly design the values of N, M, W, such as 15,16,18, etc., and will not be described herein.
And placing the rock sample in a vacuum drying oven, and drying at the preset temperature of 60-80 ℃ for 24-48 h. It can be appreciated that in this embodiment, a shale sample is selected, and the drying time of the shale sample can be adjusted according to the drying temperature.
Step 2: prefabricating a sealed container with a cavity; the volume of the cavity is greater than the volume of the dry rock sample;
the prefabricated sealed container with the cavity specifically comprises:
adopting a 3D printing technology to manufacture a rubber material into a sealed container with a cavity;
the sealed container is a sealed cylindrical container with a diameter of Amm and a height of Bmm;
the cavity is a hollow cube of X Y X Zmm.
In one example, a cylindrical sealed mold with a diameter of 25.4mm (1 inch), a height of 15.0mm, and a center position of 15 x 15mm hollow cube was made by 3D printing techniques. It is particularly noted that the volume of the cavity being greater than the volume of the dry rock sample means in particular: in principle, no gap can be reserved between the cavity and the dry rock sample, and the tightness is ensured, so that no larger gap exists between the cavity and the dry rock sample, and the cavity and the dry rock sample are tightly adhered.
Step 3: presetting a testing direction of the dry rock sample, and placing the dry rock sample into the sealed container;
presetting a test direction of the dry rock sample specifically comprises: perpendicular to the layering direction, the first parallel layering direction and the second parallel layering direction, please refer to fig. 4 。
In one example, the dried sample is removed, the sample orientation to be tested is determined, and the sample is placed in a 3D printing die.
The sample testing direction comprises a vertical layering direction and 2 parallel layering directions, and after the direction of the sample to be tested is determined and marked, the sample is placed in a 3D printing die.
Step 4: performing a boosting permeability test on a dry rock sample positioned in a cavity of the sealed container to obtain the permeability corresponding to each pressure value in a boosting mode; and performing a depressurization permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the depressurization mode;
the pressure range of the boosting mode is 5Mpa to 45Mpa; the pressure of the depressurization mode ranges from 45Mpa to 5Mpa.
In one example, the samples were subjected to a pressure-increasing permeability test from 5Mpa to 45Mpa and a pressure-decreasing permeability test from 45Mpa to 5Mpa, and for simplicity, pressure values of 5Mpa, 6Mpa, 7Mpa, 8Mpa, 9Mpa and 8Mpa, 7Mpa, 6Mpa, 5Mpa were selected for the pressure-increasing and pressure-decreasing processes to obtain the corresponding permeabilities at each pressure.
Taking out the sample from the 3D printing die, changing the placing direction of the sample, putting the sample into the die again, and repeating the steps until the permeability in the vertical layering direction and the 2 parallel layering directions are completely tested; permeability values in different directions and under different surrounding pressures are obtained as shown in table 1.
TABLE 1
Step 5: obtaining an effective stress permeability curve of the dry rock sample in all directions according to the permeability corresponding to each pressure value in the pressure increasing mode and the permeability corresponding to each pressure value in the pressure decreasing mode; the effective stress permeability curve is used to characterize rock stress sensitivity anisotropy.
The effective stress is the difference between the confining pressure and the pore pressure of the dry rock sample.
In one example, from the test results, an "effective stress-permeability" curve for each direction of the sample can be obtained, which can be used to characterize the stress sensitivity anisotropy of the rock sample.
In the embodiment of the present invention, the calculation formula of the parallel permeability 1 in the first parallel lamination direction is y= 36.778e -0.351x The method comprises the steps of carrying out a first treatment on the surface of the The calculation formula of the parallel permeability 2 of the second parallel lamination direction is y= 212.53e -0.217x The method comprises the steps of carrying out a first treatment on the surface of the The calculation formula of the vertical permeability in the vertical bedding direction is y= 2.5411e -0.135x By adjusting the direction in which the sample is placed, the relationship between the test surface and the layer orientation can be adjusted.
According to the test results, the effective stress-permeability curves of the samples in three directions can be obtained, as shown in fig. 5 and 6. Wherein the effective stress is the difference between the confining pressure and the pore pressure of the sample, which in this example is set at 1.38Mpa (200 psi).
From the results, it can be seen that the parallel layer direction permeability was reduced from 95.82ud to 3.27ud and the perpendicular direction permeability was reduced from 1.72ud to 0.99ud when the effective stress was increased to 7.62 Mpa. Under the same effective stress, the permeability shows anisotropy in the parallel layering direction, and the parallel permeability 2 is about 10 times that of the parallel permeability 1; the parallel and perpendicular layering directions are more different, and the parallel permeability is about 3-15 times that of the perpendicular permeability. And in the pressurizing and depressurizing processes, under the same effective stress, the corresponding permeability also has a difference, and the stress sensitivity of the shale sample is reflected to have anisotropy.
In summary, in the embodiment of the present invention, the conventional cylindrical sample is replaced by prefabricating the sealed container with a cavity, so that when the anisotropic permeability is measured, the heterogeneity of the cylindrical sample has a significant influence on the test result, and the influence of the heterogeneity can be eliminated by drying the rock cube sample; the defect of heterogeneity of samples in the traditional mode is overcome. The testing direction of the dry rock sample is preset, permeability parameters of the rock sample in a specific direction can be tested, and the stress sensitivity anisotropic characteristic of the rock can be represented by the permeability difference through the permeability corresponding to each pressure value in a pressure increasing mode and the permeability corresponding to each pressure value in a pressure decreasing mode. The accuracy of the rock stress sensitivity anisotropy detection result is improved.
In order to achieve the above purpose, the embodiment of the present invention further provides the following solutions:
a rock stress sensitivity anisotropy detection system, see fig. 2, comprising:
the sample acquisition module 1 is used for acquiring a rock sample; drying the rock sample to obtain a dried rock sample;
a container prefabrication module 2 is connected with the sample acquisition module 1, and the container prefabrication module 2 is used for prefabricating a sealed container with a cavity; the volume of the cavity is greater than the volume of the dry rock sample;
the direction presetting module 3 is connected with the sample acquisition module 1, and the direction presetting module 3 is used for presetting the test direction of the dry rock sample and placing the dry rock sample into the sealed container;
the boosting and depressurizing module 4 is connected with the container prefabricating module 2, and the boosting and depressurizing module 4 is used for performing boosting permeability test on the dry rock sample positioned in the hollow cavity of the sealed container to obtain the permeability corresponding to each pressure value in the boosting mode; and performing a depressurization permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the depressurization mode;
the curve drawing module 5 is connected with the boosting and depressurizing module 4, and the curve drawing module 5 is used for obtaining an effective stress permeability curve of the dry rock sample in all directions according to the permeability corresponding to each pressure value in the boosting mode and the permeability corresponding to each pressure value in the depressurizing mode; the effective stress permeability curve is used to characterize rock stress sensitivity anisotropy.
Further, the present invention also provides an electronic device, which may include: a processor, a communication interface, a memory, and a communication bus. The processor, the communication interface and the memory complete communication with each other through a communication bus. The processor may call a computer program in the memory to implement the rock stress sensitivity anisotropy detection method when the processor executes the computer program.
Furthermore, the computer program in the above-described memory may be stored in a computer-readable storage medium when it is implemented in the form of a software functional unit and sold or used as a separate product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.
Further, the invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed implements the rock stress sensitivity anisotropy detection method.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and implementations of the embodiments of the present invention have been described herein with reference to specific examples, the description of the above examples being only for the purpose of aiding in the understanding of the methods of the embodiments of the present invention and the core ideas thereof; also, it is within the spirit of the embodiments of the present invention for those skilled in the art to vary from one implementation to another and from application to another. In view of the foregoing, this description should not be construed as limiting the embodiments of the invention.
Claims (10)
1. A rock stress sensitivity anisotropy detection method, comprising:
obtaining a rock sample; drying the rock sample to obtain a dried rock sample;
prefabricating a sealed container with a cavity; the volume of the cavity is greater than the volume of the dry rock sample;
presetting a testing direction of the dry rock sample, and placing the dry rock sample into the sealed container;
performing a boosting permeability test on a dry rock sample positioned in a cavity of the sealed container to obtain the permeability corresponding to each pressure value in a boosting mode; and performing a depressurization permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the depressurization mode;
obtaining an effective stress permeability curve of the dry rock sample in all directions according to the permeability corresponding to each pressure value in the pressure increasing mode and the permeability corresponding to each pressure value in the pressure decreasing mode; the effective stress permeability curve is used to characterize rock stress sensitivity anisotropy.
2. The method of claim 1, wherein presetting the test direction of the dry rock sample specifically comprises: a perpendicular stacking direction, a first parallel stacking direction, and a second parallel stacking direction.
3. The method for detecting rock stress sensitivity anisotropy according to claim 1, wherein the obtaining a rock sample specifically comprises:
selecting a rock core column to be tested;
cutting a cube of NxMxWmm along the vertical bedding direction of the rock core column to obtain the rock sample 。
4. The method for detecting the stress sensitivity anisotropy of rock according to claim 1, wherein the step of drying the rock sample to obtain a dried rock sample comprises the following steps:
and placing the rock sample in a vacuum drying oven, and drying for T time at a preset temperature to obtain the dried rock sample.
5. The method for detecting rock stress sensitivity anisotropy according to claim 1, wherein the prefabricating the sealed container with the cavity comprises the following steps:
adopting a 3D printing technology to manufacture a rubber material into a sealed container with a cavity;
the sealed container is a sealed cylindrical container with a diameter of Amm and a height of Bmm;
the cavity is a hollow cube of X Y X Zmm.
6. The method for detecting stress sensitivity anisotropy of rock according to claim 1, wherein the pressure of the pressure increasing mode ranges from 5Mpa to 45Mpa; the pressure of the depressurization mode ranges from 45Mpa to 5Mpa.
7. The method of claim 1, wherein the effective stress is a difference between the confining pressure and the pore pressure of the dry rock sample.
8. A rock stress sensitivity anisotropy detection system, comprising:
the sample acquisition module is used for acquiring a rock sample; drying the rock sample to obtain a dried rock sample;
a container prefabrication module connected with the sample acquisition module and used for prefabricating a sealed container with a cavity; the volume of the cavity is greater than the volume of the dry rock sample;
the direction presetting module is connected with the sample acquisition module and used for presetting the testing direction of the dry rock sample and placing the dry rock sample into the sealed container;
the boosting and depressurizing module is connected with the container prefabricating module and is used for performing boosting permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the boosting mode; and performing a depressurization permeability test on the dry rock sample positioned in the cavity of the sealed container to obtain the permeability corresponding to each pressure value in the depressurization mode;
the curve drawing module is connected with the boosting and depressurizing module and is used for obtaining an effective stress permeability curve of the dry rock sample in all directions according to the permeability corresponding to each pressure value in the boosting mode and the permeability corresponding to each pressure value in the depressurizing mode; the effective stress permeability curve is used to characterize rock stress sensitivity anisotropy.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the rock stress sensitivity anisotropy detection method as claimed in any one of claims 1-7 when executing the computer program.
10. A non-transitory computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed, implements the rock stress sensitivity anisotropy detection method of any one of claims 1-7.
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