A quantitative evaluation method for strike-slip fault maturity

Abstract

The application provides a strike-slip fault maturity quantitative evaluation method, relates to the field of oil and gas field exploration and development, and the method comprises the following steps: dividing the strike-slip fault penetration evolution process through a structural physical simulation experiment; determining the stress orientation during the fault activity period in combination with field geology and acoustic emission experiments; establishing a Riedel shear fracture mode division standard based on a strike-slip strain ellipse, and constructing a strike-slip fault maturity general template; establishing a multi-scale fault model through well-seismic combination, and extracting fault geometric parameters; according to the stress orientation and the Riedel shear fracture theory, establishing a fracture angle discrimination standard and interval; constructing a strike-slip fault maturity calculation model through iterative optimization; and finally realizing the quantitative evaluation of the strike-slip fault maturity by taking the single-well fault development degree as a constraint. The application solves the technical defects that the traditional method is difficult to quantitatively evaluate the evolution degree of the strike-slip fault, and provides an important reference for the formation and evolution law of the strike-slip fault, the genetic mechanism and the fault-controlled oil and gas reservoir geological sweet spot evaluation.

Description

Technical Field

[0001] This application relates to the field of oil and gas field exploration and development, and in particular to a method for quantitatively evaluating the maturity of strike-slip faults. Background Technology

[0002] The formation, evolution, and development mechanisms of strike-slip faults are crucial foundations for research on strike-slip fault tectonic analysis and rational interpretation. Traditional field geological and seismic methods can characterize the geometric features of strike-slip faults. However, they struggle to quantitatively evaluate the tectonic evolution and stage determination throughout the formation and development process, hindering their large-scale application in fine-grained analysis. This is primarily due to the significant uncertainties, multiple interpretations, and weak quantitative evaluation capabilities of traditional field geological and seismic methods. Based on field geological and seismic interpretation, traditional seismic attributes suffer from low resolution and poor identification capabilities in complex strike-slip fault development areas. Furthermore, imaging deep, small-impact faults is difficult, and quantitative evaluation of main and branch faults is impossible, as is characterizing the developmental features of strike-slip faults at different evolutionary stages. Ultimately, the accuracy of characterizing the geometric features of strike-slip faults falls short of the requirements for fine-grained description of deep and ultra-deep strike-slip faults. Therefore, a scientific method for quantitatively evaluating the formation, evolution, and development of strike-slip faults, directly constrained by well logging and seismic interpretation results, is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a quantitative evaluation method for the maturity of strike-slip fractures, in order to solve the problem that existing technologies are unable to quantitatively evaluate the development degree of strike-slip fractures at different evolution stages.

[0004] The above-mentioned objective of this application is achieved through the following technical solution: S1: Based on structural physics simulation experiments, the through-through evolution process of strike-slip fractures is divided; S2: Based on paleostress field analysis, determine the stress orientation during the main active periods of the strike-slip fault; S3: Based on the strike-slip strain ellipse, establish the classification criteria for different types of Riedel shear failure modes; S4: Establish a general template for strike-slip fracture maturity by combining the evolution process and the Riedel shear fracture mode; S5: Based on well seismic data, establish a multi-scale fracture model and extract fracture geometric parameters; S6: Based on the stress orientation and classification criteria, establish a fracture angle discrimination criterion and discrimination interval; based on the fracture angle discrimination criterion and discrimination interval, establish a strike-slip fracture maturity calculation model through iterative optimization; S7: Based on the strike-slip fracture maturity calculation model, the maturity of strike-slip fractures is quantitatively evaluated with the degree of fracture development in a single well as a constraint.

[0005] Optionally, step S1 includes: Design structural physics simulation experiments based on actual geological data; Through simple shear experiments, the developmental characteristics of strike-slip fractures at different evolutionary stages were revealed; Based on developmental characteristics, the formation and penetration evolution process is divided into the budding stage, the unidirectional shear fracture development stage, the secondary unidirectional fracture and the near-parallel shear fracture development stage of the main displacement zone, and the strike-slip zone penetration stage.

[0006] Optionally, step S2 includes: By utilizing contemporaneous conjugate shear joints, fault slip directions, or fold axis relationships, the direction of paleostress axis can be preliminarily determined. Rock samples were collected, and the magnitude and direction of the paleostress experienced by the rocks were directly determined through acoustic emission experiments. By utilizing the magnitude and direction of paleostress experienced by rocks, the direction of paleostress axes is verified and quantitatively constrained to determine the stress orientation.

[0007] Optionally, step S3 includes: Based on the different principal displacement directions and the strike-slip strain ellipses generated by force couples in different directions, the corresponding Riedel shear fracture modes under left-handed and right-handed rotation are determined. Riedel's shear fracture modes include: co-directional shear fracture, reverse shear fracture, secondary co-directional fracture, tension fracture, and near-parallel shear fracture in the main displacement zone.

[0008] Optionally, step S4 includes: The typical geometric features of strike-slip fractures are correlated with the described through-evolution process; The developmental types, combination characteristics, and relative developmental degree of the Riedel shearing fracture patterns are clearly defined at different evolutionary stages. A general template for strike-slip fracture maturity was established, using the development level of the Riedel shear fracture mode as an indicator.

[0009] Optionally, step S5 includes: Well seismic data includes downhole imaging logging data and seismic sensitivity attribute data; Earthquake-sensitive attribute data include: maximum likelihood attribute, ant body attribute, root mean square amplitude attribute, and porosity attribute; Acquire and process downhole imaging logging data of the target reservoir section, and identify fracture development characteristics at the single-well scale based on the differential response characteristics of fractures on the image; Identify fault distribution at the seismic scale by combining seismic sensitivity attributes; By integrating the identification results of fracture development characteristics and fracture distribution, a multi-scale fracture model combining well and seismic analysis is established. Based on the multi-scale fracture model, digital image processing technology is used to quantitatively extract and calculate fracture geometric parameters, including fracture dip direction, fracture strike, and fracture dip angle. The fracture dip direction refers to the direction corresponding to the lowest point of the fracture trace on the imaging logging image. The fracture strike is perpendicular to the fracture dip direction. The formula for calculating the fracture dip angle is expressed as follows:

[0010] in, The angle of fracture; The elevation difference between the highest and lowest points of the trace where the fracture intersects the wellbore; This refers to the diameter of the wellbore.

[0011] Optionally, step S6 includes: Based on the geometric structural features of strike-slip faults in the study area and the stress orientation during the main active periods, the strike of the main displacement zone was determined. Based on the classification criteria of Riedel shear fracture modes, and considering the rotation direction of the main displacement zone in the study area, the theoretical angle range between different fracture types and the main displacement zone is determined as the fracture angle discrimination criteria and discrimination intervals for each fracture type. The fracture angle discrimination criteria and discrimination interval are used as the initial inputs; The actual fracture development encountered during drilling in the study area was compared with the general template for strike-slip fracture maturity. Through simulation tests, the combination of fracture types and their angle ranges that best match the characteristics of different evolutionary stages were selected; Based on the combination of fracture types and their angle ranges, the initial fracture angle discrimination criteria and discrimination intervals are iteratively optimized to finally form a strike-slip fracture maturity calculation model applicable to the study area.

[0012] Optionally, step S7 includes: The maturity calculation model for strike-slip fractures was applied to calculate the quantitative values ​​of the maturity of fractures encountered at different locations or in single wells within the study area. The degree of fracture development in a single well is used as a hard data constraint to calibrate the quantitative value of maturity. By combining the aforementioned general template for strike-slip fault maturity, the evolutionary stage of strike-slip faults in different parts of the study area is determined, and finally, a planar distribution map of strike-slip fault maturity is drawn to achieve a quantitative evaluation of strike-slip fault maturity.

[0013] An electronic device includes a processor, a memory, a user interface, and a network interface. The memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory to enable the electronic device to perform a method for quantitatively evaluating the maturity of strike-slip fractures.

[0014] A computer-readable storage medium storing instructions that, when executed, perform a method for quantitatively evaluating the maturity of strike-slip fractures.

[0015] The beneficial effects of the technical solution provided in this application are: Based on structural physics simulation experiments, the evolution process of strike-slip faults is divided; combined with field geology and experimental methods, the stress orientation during the active period of strike-slip faults is determined; based on the Riedel shear rupture mode classification method, a general template for strike-slip fault maturity is established; a multi-scale fault model combining well and seismic analysis is established to complete the extraction and calculation of fault parameters and features; based on different types of Riedel shear rupture modes, the strike and rupture angle of strike-slip faults are determined; a strike-slip fault maturity calculation model is established, ultimately achieving a quantitative evaluation of strike-slip fault maturity. This invention patent proposes a quantitative evaluation method for strike-slip fault maturity, which has reference value for multiple aspects such as the formation and evolution law of strike-slip faults, their genetic mechanism, and the evaluation of "geological sweet spots" in fault-controlled oil and gas reservoirs. Attached Figure Description

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 A flowchart of a quantitative evaluation method for strike-slip fracture maturity; Figure 2 Schematic diagrams of different types of Riedel shear fracture mechanisms: (A) right-handed; (B) right-handed; Figure 3 A general template for strike-slip fracture maturity; Figure 4 For imaging logging fracture / fracture identification results; Figure 5 Earthquake-sensitive attributes: (A) Ant body attributes; (B) Root mean square amplitude attributes; Figure 6 A multi-scale fracture model combining well-seismic analysis; Figure 7 A schematic diagram showing the criteria and discrimination intervals for the strike-slip fault trend and fracture angle in the study area; Figure 8 This is a distribution map of the maturity of strike-slip faults in the study area. Figure 9 This is a schematic diagram of the electronic device structure in the embodiments of this application. Detailed Implementation

[0017] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0018] The embodiments of this application provide a method for quantitatively evaluating the maturity of strike-slip fractures.

[0019] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating the steps of a quantitative evaluation method for strike-slip fracture maturity in an embodiment of this application, including: The specific embodiments of the present invention are described below with reference to the accompanying drawings: S1: Based on structural physics simulation experiments, the through-through evolution process of strike-slip fractures is divided; S2: Based on paleostress field analysis, determine the stress orientation during the main active periods of the strike-slip fault; S3: Based on the strike-slip strain ellipse, establish the classification criteria for different types of Riedel shear failure modes; S4: Establish a general template for strike-slip fracture maturity by combining the evolution process and the Riedel shear fracture mode; S5: Based on well seismic data, establish a multi-scale fracture model and extract fracture geometric parameters; S6: Based on the stress orientation and classification criteria, establish a fracture angle discrimination criterion and discrimination interval; based on the fracture angle discrimination criterion and discrimination interval, establish a strike-slip fracture maturity calculation model through iterative optimization; S7: Based on the strike-slip fracture maturity calculation model, the maturity of strike-slip fractures is quantitatively evaluated with the degree of fracture development in a single well as a constraint.

[0020] Step S1 includes: Design structural physics simulation experiments based on actual geological data; Through simple shear experiments, the developmental characteristics of strike-slip fractures at different evolutionary stages were revealed; Based on developmental characteristics, the formation and penetration evolution process is divided into the budding stage, the unidirectional shear fracture development stage, the secondary unidirectional fracture and the near-parallel shear fracture development stage of the main displacement zone, and the strike-slip zone penetration stage.

[0021] Step S2 includes: By utilizing contemporaneous conjugate shear joints, fault slip directions, or fold axis relationships, the direction of paleostress axis can be preliminarily determined. Rock samples were collected, and the magnitude and direction of the paleostress experienced by the rocks were directly determined through acoustic emission experiments. By utilizing the magnitude and direction of paleostress experienced by rocks, the direction of paleostress axes is verified and quantitatively constrained to determine the stress orientation.

[0022] Step S3 includes: Based on the different principal displacement directions and the strike-slip strain ellipses generated by force couples in different directions, the corresponding Riedel shear fracture modes under left-handed and right-handed rotation are determined. Riedel's shear fracture modes include: co-directional shear fracture, reverse shear fracture, secondary co-directional fracture, tension fracture, and near-parallel shear fracture in the main displacement zone.

[0023] Step S4 includes: The typical geometric features of strike-slip fractures are correlated with the described through-evolution process; The developmental types, combination characteristics, and relative developmental degree of the Riedel shearing fracture patterns are clearly defined at different evolutionary stages. A general template for strike-slip fracture maturity was established, using the development level of the Riedel shear fracture mode as an indicator.

[0024] Step S5 includes: Well seismic data includes downhole imaging logging data and seismic sensitivity attribute data; Earthquake-sensitive attribute data include: maximum likelihood attribute, ant body attribute, root mean square amplitude attribute, and porosity attribute; Acquire and process downhole imaging logging data of the target reservoir section, and identify fracture development characteristics at the single-well scale based on the differential response characteristics of fractures on the image; Identify fault distribution at the seismic scale by combining seismic sensitivity attributes; By integrating the identification results of fracture development characteristics and fracture distribution, a multi-scale fracture model combining well and seismic analysis is established. Based on the multi-scale fracture model, digital image processing technology is used to quantitatively extract and calculate fracture geometric parameters, including fracture dip direction, fracture strike, and fracture dip angle. The fracture dip direction refers to the direction corresponding to the lowest point of the fracture trace on the imaging logging image. The fracture strike is perpendicular to the fracture dip direction. The formula for calculating the fracture dip angle is expressed as follows:

[0025] in, The angle of fracture; The elevation difference between the highest and lowest points of the trace where the fracture intersects the wellbore; This refers to the diameter of the wellbore.

[0026] Step S6 includes: Based on the geometric structural features of strike-slip faults in the study area and the stress orientation during the main active periods, the strike of the main displacement zone was determined. Based on the classification criteria of Riedel shear fracture modes, and considering the rotation direction of the main displacement zone in the study area, the theoretical angle range between different fracture types and the main displacement zone is determined as the fracture angle discrimination criteria and discrimination intervals for each fracture type. The fracture angle discrimination criteria and discrimination interval are used as the initial inputs; The actual fracture development encountered during drilling in the study area was compared with the general template for strike-slip fracture maturity. Through simulation tests, the combination of fracture types and their angle ranges that best match the characteristics of different evolutionary stages were selected; Based on the combination of fracture types and their angle ranges, the initial fracture angle discrimination criteria and discrimination intervals are iteratively optimized to finally form a strike-slip fracture maturity calculation model applicable to the study area.

[0027] Step S7 includes: The maturity calculation model for strike-slip fractures was applied to calculate the quantitative values ​​of the maturity of fractures encountered at different locations or in single wells within the study area. The degree of fracture development in a single well is used as a hard data constraint to calibrate the quantitative value of maturity. By combining the aforementioned general template for strike-slip fault maturity, the evolutionary stage of strike-slip faults in different parts of the study area is determined, and finally, a planar distribution map of strike-slip fault maturity is drawn to achieve a quantitative evaluation of strike-slip fault maturity.

[0028] This invention patent uses the carbonate reservoir of the Fuman Oilfield in the Tarim Basin of western China as an example to illustrate the specific implementation process of the invention. The Fuman Oilfield is mainly located in the saddles of two ancient uplift structures in the Tarim Basin, situated in the central slope of the Aman transition zone. Having undergone multiple tectonic movements, it preserves the most complete superimposed basin stratigraphic sequence. Influenced by these tectonic movements, multiple strike-slip fault systems have developed in this area, and long-term differential weathering and karst alteration have formed fracture-vuggy reservoirs distributed along the fault zones. Fault activity controls reservoir development and differential hydrocarbon accumulation, making it a typical fault-controlled carbonate oil reservoir. Traditional field geological and seismic methods are insufficient for quantitatively evaluating the tectonic evolution and stage determination of strike-slip faults during their formation and evolution, and are difficult to apply on a large scale to fine-grained analysis of strike-slip fault structures. Therefore, a scientific method for quantitatively evaluating the formation and evolution of strike-slip faults and their developmental degree is needed to support research on the formation and evolution laws and genetic mechanisms of deep and ultra-deep strike-slip faults.

[0029] The first step is to construct a physical simulation experiment to delineate the evolution process of strike-slip fractures; Based on actual geological data, a structural physics simulation experiment was designed. A series of simple shear experiments were conducted to reveal the development characteristics of different evolution stages of strike-slip faults, and the formation and through-slip evolution processes of strike-slip faults were divided. The through-slip evolution process of strike-slip faults includes the nascent stage, the development stage of unidirectional shear fractures, the development stage of secondary unidirectional fractures and near-parallel shear fractures of the main displacement zone, and the through-slip zone stage.

[0030] The second step is to determine the stress orientation during the main active period of the strike-slip fault. By utilizing tectonic elements formed concurrently, the principal stress axis is determined. In the laboratory, acoustic emission experiments are used to directly determine the magnitude and direction of paleostress experienced by the rock, verifying and quantitatively constraining the field geological methods to determine the stress orientation during the main active period of strike-slip faults. Tectonic elements include conjugate shear joints, fault slip direction, and axial-plane relationships of folds.

[0031] The third step is to establish a method for classifying strike-slip fracture Riedel shear fracture modes. The Riedel shear fracture modes differ depending on the direction of the couple. Based on the strike-slip strain ellipse generated by couples in different directions, a classification method for different types of Riedel shear fracture modes is established. Figure 2 The Riedel shear fracture modes include co-directional shear fracture, anti-directional shear fracture, secondary co-directional fracture, tension fracture, and near-parallel shear fracture of the main displacement zone. Different types of Riedel shear fracture modes are determined by the left-handed and right-handed Riedel shear fracture modes based on the different rotation directions of the main displacement zone and the strike-slip strain ellipse generated by the force couple in different directions.

[0032] The fourth step is to establish a general knowledge template for strike-slip fracture maturity. Based on the typical geometric features of strike-slip fractures and their evolutionary process, combined with different evolutionary stages and fracture development, an evolutionary model combining Riedel shear rupture mode and strike-slip fracture maturity is formed, and a general template for strike-slip fracture maturity is established. Figure 3 Evolutionary model refers to the degree of development of different Riedel shear fracture modes corresponding to different evolutionary stages of strike-slip faults. The evolutionary stage of the strike-slip fault is determined based on the degree of development of Riedel shear fracture modes.

[0033] The fifth step is multi-scale fracture modeling combining well-seismic analysis; The raw downhole imaging logging data of the target reservoir section is acquired and processed. By interpreting the processed images, the degree of fracture development is identified based on the differential response characteristics of fractures in the images. Figure 4 ), combined with seismic sensitivity attributes to identify faults ( Figure 5 A multi-scale fracture model combining well and seismic analysis was established; seismic sensitivity attributes included maximum likelihood, ant-body, root mean square amplitude, and porosity.

[0034] Step 6: Extraction and calculation of fracture parameters and features; Fracture spatial distribution and morphological characteristics obtained based on multi-scale fracture models Figure 6 Using the identified fracture features as input, digital image processing technology is used to quantitatively extract and calculate fracture parameters.

[0035] Step 7: Determining the strike-slip fracture direction and fracture angle; Based on the geometric characteristics of strike-slip fractures and the stress orientation during the main active periods, the strike direction of strike-slip fractures in the study area was determined. According to different types of Riedel shear fracture modes, a suitable criterion and discrimination interval for fracture angles of strike-slip fractures in the study area were established. Figure 7 The criteria and discrimination intervals refer to the division of fracture types corresponding to different fracture angles based on the angle between different fracture types and the main displacement zone in the Riedel shear fracture mode, and the determination of the angle criteria and intervals for different fracture types.

[0036] Step 8: Establish a calculation model for strike-slip fracture maturity; Based on the criteria and range for determining the fracture angle of strike-slip fractures in the study area, the criteria and range were optimized through continuous simulation testing and iteration, combined with the Riedel shear fracture mode. Finally, a calculation model for the maturity of strike-slip fractures in the study area was obtained. Continuous simulation testing and iteration refers to the process of screening the fracture development degree of strike-slip fractures at different evolution stages under different types of Riedel shear fracture modes through continuous simulation testing, adjusting the criteria and range, and finally obtaining a calculation model for the maturity of strike-slip fractures applicable to the target layer in the study area.

[0037] The ninth step is the quantitative evaluation of the maturity of the strike-slip fracture. Based on the strike-slip fault maturity calculation model, and using the fault development degree of a single well as a constraint, the strike-slip fault maturity in the study area is calculated, and the development degree of strike-slip faults and the evolution law of different locations are quantitatively evaluated. Figure 8 Using the degree of single-well fracture development as a constraint, the strike-slip fracture maturity calculation model is used to calculate the degree of single-well fracture development. Combined with different evolution stages of strike-slip fractures, the degree of evolution of the strike-slip fracture in a single well is judged, and the maturity of the strike-slip fracture is finally quantitatively evaluated.

[0038] This application also discloses an electronic device. (See reference...) Figure 9 , Figure 9 This is a schematic diagram of the structure of an electronic device disclosed in an embodiment of this application. The electronic device 500 may include: at least one processor 501, at least one network interface 504, a user interface 503, a memory 505, and at least one communication bus 502.

[0039] The communication bus 502 is used to enable communication between these components.

[0040] The user interface 503 may include a display screen, and optionally, the user interface 503 may also include a standard wired interface or a wireless interface.

[0041] The network interface 504 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0042] This application also discloses a computer-readable storage medium storing multiple instructions adapted for loading by a processor to execute the aforementioned method for quantitative evaluation of strike-slip fracture maturity.

[0043] The above are merely exemplary embodiments of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure.

[0044] This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure. The specification and embodiments are to be considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

Claims

1. A method for quantitatively evaluating the maturity of strike-slip fractures, characterized in that, The method includes the following steps: S1: Based on structural physics simulation experiments, the through-through evolution process of strike-slip fractures is divided; S2: Based on paleostress field analysis, determine the stress orientation during the main active periods of the strike-slip fault; S3: Based on the strike-slip strain ellipse, establish the classification criteria for different types of Riedel shear failure modes; S4: Establish a general template for strike-slip fracture maturity by combining the evolution process and the Riedel shear fracture mode; S5: Based on well seismic data, establish a multi-scale fracture model and extract fracture geometric parameters; S6: Based on the stress orientation and division criteria, establish the criteria and range for determining the fracture angle; Based on the aforementioned fracture angle discrimination criteria and discrimination interval, a strike-slip fracture maturity calculation model is established through iterative optimization. S7: Based on the strike-slip fracture maturity calculation model, the maturity of strike-slip fractures is quantitatively evaluated with the degree of fracture development in a single well as a constraint.

2. The method for quantitatively evaluating the maturity of strike-slip fractures as described in claim 1, characterized in that, Step S1 includes: Design structural physics simulation experiments based on actual geological data; Through simple shear experiments, the developmental characteristics of strike-slip fractures at different evolutionary stages were revealed; Based on developmental characteristics, the formation and penetration evolution process is divided into the budding stage, the unidirectional shear fracture development stage, the secondary unidirectional fracture and the near-parallel shear fracture development stage of the main displacement zone, and the strike-slip zone penetration stage.

3. The method for quantitatively evaluating the maturity of strike-slip fractures as described in claim 1, characterized in that, Step S2 includes: By utilizing contemporaneous conjugate shear joints, fault slip directions, or fold axis relationships, the direction of paleostress axis can be preliminarily determined. Rock samples were collected, and the magnitude and direction of the paleostress experienced by the rocks were directly determined through acoustic emission experiments. By utilizing the magnitude and direction of paleostress experienced by rocks, the direction of paleostress axes is verified and quantitatively constrained to determine the stress orientation.

4. The method for quantitatively evaluating the maturity of strike-slip fractures as described in claim 1, characterized in that, Step S3 includes: Based on the different principal displacement directions and the strike-slip strain ellipses generated by force couples in different directions, the corresponding Riedel shear fracture modes under left-handed and right-handed rotation are determined. Riedel's shear fracture modes include: co-directional shear fracture, reverse shear fracture, secondary co-directional fracture, tension fracture, and near-parallel shear fracture in the main displacement zone.

5. The method for quantitatively evaluating the maturity of strike-slip fractures as described in claim 1, characterized in that, Step S4 includes: The typical geometric features of strike-slip fractures are correlated with the described through-evolution process; The developmental types, combination characteristics, and relative developmental degree of the Riedel shearing fracture patterns are clearly defined at different evolutionary stages. A general template for strike-slip fracture maturity was established, using the development level of the Riedel shear fracture mode as an indicator.

6. The method for quantitatively evaluating the maturity of strike-slip fractures as described in claim 1, characterized in that, Step S5 includes: Well seismic data includes downhole imaging logging data and seismic sensitivity attribute data; Earthquake-sensitive attribute data include: maximum likelihood attribute, ant body attribute, root mean square amplitude attribute, and porosity attribute; Acquire and process downhole imaging logging data of the target reservoir section, and identify fracture development characteristics at the single-well scale based on the differential response characteristics of fractures on the image; Identify fault distribution at the seismic scale by combining seismic sensitivity attributes; By integrating the identification results of fracture development characteristics and fracture distribution, a multi-scale fracture model combining well and seismic analysis is established. Based on the multi-scale fracture model, digital image processing technology is used to quantitatively extract and calculate fracture geometric parameters, including fracture dip direction, fracture strike, and fracture dip angle. The fracture dip direction refers to the direction corresponding to the lowest point of the fracture trace on the imaging logging image. The fracture strike is perpendicular to the fracture dip direction. The formula for calculating the fracture dip angle is expressed as follows: in, The angle of fracture; The elevation difference between the highest and lowest points of the trace where the fracture intersects the wellbore; This refers to the diameter of the wellbore.

7. The method for quantitatively evaluating the maturity of strike-slip fractures as described in claim 1, characterized in that, Step S6 includes: Based on the geometric structural features of strike-slip faults in the study area and the stress orientation during the main active periods, the strike of the main displacement zone was determined. Based on the classification criteria of Riedel shear fracture modes, and considering the rotation direction of the main displacement zone in the study area, the theoretical angle range between different fracture types and the main displacement zone is determined as the fracture angle discrimination criteria and discrimination intervals for each fracture type. The fracture angle discrimination criteria and discrimination interval are used as the initial inputs; The actual fracture development encountered during drilling in the study area was compared with the general template for strike-slip fracture maturity. Through simulation tests, the combination of fracture types and their angle ranges that best match the characteristics of different evolutionary stages were selected; Based on the combination of fracture types and their angle ranges, the initial fracture angle discrimination criteria and discrimination intervals are iteratively optimized to finally form a strike-slip fracture maturity calculation model applicable to the study area.

8. The method for quantitatively evaluating the maturity of strike-slip fractures as described in claim 1, characterized in that, Step S7 includes: The maturity calculation model for strike-slip fractures was applied to calculate the quantitative values ​​of the maturity of fractures encountered at different locations or in single wells within the study area. The degree of fracture development in a single well is used as a hard data constraint to calibrate the quantitative value of maturity. By combining the aforementioned general template for strike-slip fault maturity, the evolutionary stage of strike-slip faults in different parts of the study area is determined, and finally, a planar distribution map of strike-slip fault maturity is drawn to achieve a quantitative evaluation of strike-slip fault maturity.

9. An electronic device, characterized in that, The device includes a processor, a memory, a user interface, and a network interface. The memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory to enable the electronic device to perform the quantitative evaluation method for strike-slip fracture maturity as described in any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed by a computer, perform the quantitative evaluation method for strike-slip fracture maturity as described in any one of claims 1-8.

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