Method for establishing shale oil three-dimensional development efficient construction and production implementation mode

Abstract

The invention provides a shale oil three-dimensional development efficient construction and production implementation mode establishment method, which comprises the following steps of: S1, determining a division mode of a three-dimensional well group implementation unit, and dividing the implementation unit; s2, determining the number of implementation unit wells; s3, optimizing an implementation boundary; s4, establishing a three-dimensional development construction and production mode to form two continental facies shale oil construction and production modes; and S5, iteratively optimizing the two continental facies shale oil construction and production modes. The method is convenient and effective to implement and high in operability, has better applicability in continental facies shale oil development, can effectively reduce inter-well interference in well group development, reduces construction risks, accelerates the construction and production speed, shortens the investment period, and solves the problem of efficient construction and production of continental facies fracture shale oil three-dimensional development.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield development, and in particular to a method for establishing an efficient production implementation model for three-dimensional development of shale oil. Background Art

[0002] As a prime example of unconventional oil and gas resources, shale oil, with its vast recoverable resource base and steadily increasing industrial production, has become a new bright spot in global unconventional oil and gas development. Marine shale oil plays, such as those in the Permian, Bakken, and Eagle Ford basins in North America, have achieved scale-based development, contributing to U.S. energy independence. Compared to U.S. marine shale oil, shale oil from continental fault basins exhibits the characteristics of "low, deep, thick, and high," meaning low thermal evolution, deep burial depth, thick oil-bearing strata, and high formation temperatures and pressure coefficients. Furthermore, shale oil exhibits the triple complexity of "complex structure, complex lithofacies, and complex fluid properties."

[0003] In the single-well production mode, drilling, fracturing and production are carried out one by one in a rolling development process, which can easily lead to problems such as slow production construction and frequent relocation of drilling rigs and fracturing vehicles. In the conventional large-platform three-dimensional well group development mode, the three-dimensional well group is regarded as a whole and is implemented in the order of drilling, fracturing and production. The production cycle is too long, and the large-platform box fracturing mode is prone to complex stress shadows, making safe construction difficult.

[0004] It is currently believed that the coordinated development of multiple small well groups within a large platform's three-dimensional well formation can effectively shorten the production reduction cycle. However, the fracturing and commissioning of horizontal wells can cause changes in the reservoir pressure and stress fields, leading to significant interference between wells. The "Tank Development" production model proposed by the United States has reduced interwell interference to some extent and shortened the production cycle. However, this model still involves some interference between wells in the same layer, and the geological conditions of North American marine shale oil differ significantly from those of Chinese continental shale oil. Therefore, it is necessary to explore a safe and reasonable drilling-pressure-injection implementation model. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a method for establishing an efficient production implementation model for three-dimensional development of shale oil that overcomes the above problems or at least partially solves the above problems.

[0006] According to one aspect of the present invention, a method for establishing an efficient production implementation model for three-dimensional development of shale oil is provided, the method comprising:

[0007] Step S1: Determine the division method of the implementation units of the three-dimensional well group and divide the implementation units;

[0008] Step S2: Determine the number of implementation unit wells;

[0009] Step S3: Optimize implementation limits;

[0010] Step S4: Establish a three-dimensional development and production model to form two continental shale oil production models;

[0011] Step S5: Iteratively optimize the two continental shale oil production modes.

[0012] Optionally, the step S1: determining a division method of the implementation units of the three-dimensional well group, and performing effective division of the implementation units specifically includes:

[0013] Determine the basis for dividing the implementation units based on the geological conditions and test content of the three-dimensional well network, determine the division method of the three-dimensional well group implementation units, and carry out effective division of the implementation units.

[0014] Optionally, the method of determining the basis for dividing the implementation units according to the geological conditions and test contents of the three-dimensional well network and determining the division method of the three-dimensional well group implementation units specifically includes:

[0015] In areas where bedding fractures are well developed, the implementation units are mainly divided into columns, and the three-dimensional well pattern is divided into multiple implementation units by column;

[0016] In areas with high-angle structural fractures, the implementation units are mainly divided by rows, and the three-dimensional well pattern is divided into multiple implementation units by rows;

[0017] If the development technical policies such as reasonable well spacing and layer spacing of the three-dimensional well network are not clear, the implementation unit division shall be carried out considering the test content of the three-dimensional well network;

[0018] If the test content is a layer spacing test, the unit division shall be carried out in the row division mode;

[0019] If the test content is a well spacing test, the unit division shall be carried out in a column-based manner.

[0020] Optionally, the step S2: determining the number of implementation unit wells specifically includes: using fracturing simulation and numerical simulation methods to determine the minimum number of wells that does not generate stress concentration and cause serious fracturing interference specifically includes:

[0021] For the implementation units divided by columns and rows, the post-fracturing ground stress simulation of the implementation units is carried out using fracturing simulation and numerical simulation methods according to the different numbers of unit wells;

[0022] The minimum stress change value when stress concentration causes casing damage and casing deformation is used as the upper limit of stress change during fracturing to determine the limit of the number of wells in the implementation unit, thereby reducing the risk of casing damage and casing deformation caused by stress concentration during fracturing. In actual implementation, the number of wells in the unit is less than the above limit.

[0023] Optionally, the step S3: optimizing the implementation limit specifically includes:

[0024] Fracturing simulation and numerical simulation are used to determine how the degree of inter-well interference changes with distance and time, and to establish distance and time boundaries between multiple implementation units.

[0025] Optionally, the method of using fracturing simulation and numerical simulation to determine how the degree of inter-well interference varies with distance and time, and establishing distance and time boundaries between multiple implementation units specifically includes:

[0026] Use fracturing simulation and numerical simulation to simulate the interference between implementation units and determine the distance and time limit of drilling-pressure-throwing implementation of each implementation unit;

[0027] Under the column-based implementation unit division method, according to the maximum number of wells in the implementation unit, the fracturing simulation of the implementation unit is carried out, and the distance limit between the drilling well and the production well is determined according to the minimum stress change value;

[0028] Conduct fracturing simulations and numerical simulations at different times after the first implementation unit. Based on the changes in upper and lower fracture heights and single-well EUR after the second implementation unit, determine the time limit between fracturing wells and production wells in the column implementation mode.

[0029] Under the row-based implementation unit division method, the fracturing simulation of the implementation unit is carried out according to the maximum number of implementation unit wells, and the distance limit between the drilling wells and the production wells under the column-based implementation mode is determined according to the minimum stress change value;

[0030] For adjacent implementation units, fracturing simulation and numerical simulation were carried out at different times after the implementation of the first implementation unit. According to the changes in the upper and lower fracture heights and the EUR of the single well after the fracturing of the second implementation unit, the time limit between the fracturing wells and the production wells under the column implementation mode was determined.

[0031] Optionally, the minimum stress change value is 6 MPa.

[0032] Optionally, step S4: establishing a three-dimensional development and production model to form two continental shale oil production models specifically includes: establishing a three-dimensional development and production model, and performing combined optimization of the implementation sequence between units based on the division method of the implementation units and the safe implementation boundaries to form two continental shale oil production models.

[0033] Optionally, the step S5: iteratively optimizing the two continental shale oil production modes specifically includes: field practice verification, combining the layout of ground drilling rigs and fracturing vehicles, optimizing the unified implementation sequence above and below ground, and experimentally verifying the rationality and field operation reliability of the two implementation modes, and iteratively optimizing the two continental shale oil production modes.

[0034] Optionally, the iterative optimization of the two continental shale oil production modes specifically includes:

[0035] According to the vertical and horizontal push tank operation modes, the mine field is practically laid out in combination with ground drilling rigs and fracturing trucks. During the implementation process, the pressure interference between two implementation units at a certain distance and the regular differences in the expansion of artificial fractures and the degree of pressure rise in adjacent implementation units are monitored;

[0036] According to the actual monitoring results, the subsequent implementation distance and implementation time of the two continental shale oil production models are iteratively optimized.

[0037] The present invention provides a method for establishing an efficient production model for three-dimensional shale oil development. The method comprises: step S1: determining a division method for three-dimensional well group implementation units; step S2: determining the number of wells in the implementation units; step S3: optimizing implementation boundaries; step S4: establishing a three-dimensional development and production model, forming two continental shale oil production models; and step S5: iteratively optimizing the two continental shale oil production models. This method is convenient, effective, and highly operational, and has excellent applicability in continental shale oil development. It can effectively reduce inter-well interference in well group development, lower construction risks, accelerate production, and shorten the investment cycle, thus solving the problem of efficient production in three-dimensional development of continental fault-depression shale oil.

[0038] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A flow chart of a method for establishing an efficient production implementation model for three-dimensional development of shale oil provided in Example 1 of the present invention;

[0041] Figure 2 This is a diagram showing the numerical simulation results of the vertical and horizontal push Tank fracturing provided in Example 1 of the present invention;

[0042] Figure 3 This is a diagram showing the numerical simulation results of the horizontal vertical push Tank fracturing provided in Example 1 of the present invention;

[0043] Figure 4 This is a schematic diagram of the longitudinal and transverse thrust tank operation mode provided in Example 1 of the present invention;

[0044] Figure 5 This is a schematic diagram of the horizontal longitudinal push Tank operation mode provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0045] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] The terms "comprises" and "comprising" and any variations thereof in the description, embodiments, claims and drawings of the present invention are intended to cover non-exclusive inclusions, for example, including a series of steps or units.

[0047] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0048] Example 1

[0049] like Figure 1 As shown, a method for establishing an efficient production implementation model for three-dimensional development of shale oil specifically includes:

[0050] In step 101, a "vertical and horizontal push tank" operation mode is established; and a numerical simulation method is used to determine the well spacing limit of the "vertical and horizontal push tank" operation mode.

[0051] Step 101 specifically includes:

[0052] Based on the geological characteristics of the 3D well network deployment area, different implementation unit division methods for the 3D well network are established. Considering the impact of fracture development on pressure propagation, in areas with well-developed bedding fractures, implementation units are primarily divided by "columns," with the 3D well network divided into multiple implementation units by column. This avoids lateral well interference caused by pressure transfer along bedding fractures during lateral multi-well construction. In areas with well-developed high-angle structural fractures, implementation units are primarily divided by "rows," with the 3D well network divided into multiple implementation units by row. This avoids vertical well interference caused by pressure transfer along structural fractures during vertical multi-well construction. If development technical policies such as reasonable well spacing and layer spacing for the 3D well network are unclear, implementation unit division should be considered based on the test content of the 3D well network. If the test content is layer spacing testing, implementation unit division should be based on "rows"; if the test content is well spacing testing, implementation unit division should be based on "columns."

[0053] In step 102, post-fracturing ground stress simulation of the implementation unit is performed using fracturing simulation and numerical simulation methods, and the number of safe implementation wells in the implementation unit is determined based on the stress concentration situation.

[0054] Step 102 specifically includes:

[0055] For implementation units divided by "columns," post-fracturing in-situ stress simulations were performed for different numbers of wells using fracturing and numerical simulations. When the post-fracturing in-situ stress within an implementation unit increases by 6 MPa compared to the original in-situ stress, or when the post-fracturing in-situ stress difference between segments of a well exceeds 6 MPa, stress concentration occurs at that location, leading to casing damage and casing failure. In this case, the maximum number of horizontal wells in the implementation unit is set, thereby determining the well number limit for implementation units divided by "columns." For implementation units divided by "rows," post-fracturing in-situ stress simulations were performed for different numbers of wells using fracturing and numerical simulations. When the post-fracturing in-situ stress within an implementation unit increases by 6 MPa compared to the original in-situ stress, or when the post-fracturing in-situ stress difference between segments of a well exceeds 6 MPa, stress concentration occurs at that location, leading to casing damage and casing failure. In this case, the maximum number of horizontal wells in the implementation unit is set, thereby determining the well number limit for implementation units divided by "rows." In actual implementation, the number of wells in the unit is less than this limit.

[0056] In step 103, fracturing simulation and numerical simulation are performed on different implementation units respectively to clarify the artificial fractures and pressure planes as well as the longitudinal propagation distance and impact time, and to establish the distance and time boundaries between different implementation units.

[0057] Step 103 specifically includes:

[0058] Use fracturing simulation and numerical simulation to simulate the interference between implementation units and determine the distance and time limit of drilling-pressure-throwing implementation of each implementation unit: Under the "column" implementation unit division method, determine the maximum number of implementation unit wells according to step 2, and carry out fracturing simulation of the implementation unit ( Figure 2 ), the plane distance from the position where the formation pressure increases ≤6MPa to the implementation unit is the distance limit between the drilling well and the production well under the column implementation mode. Next, for the adjacent implementation units, fracturing simulation and numerical simulation are carried out at different times 1-24 months after the implementation of the first implementation unit. When the difference in the length of the artificial fractures on the two wings of the second implementation unit after fracturing is less than 20m and the difference in the predicted EUR of the single well is no more than 5% compared with the predicted EUR of the first implementation unit, the time between the two implementation units is the time limit between the fracturing well and the production well under the column implementation mode; under the "row" implementation unit division method, the maximum number of implementation unit wells is determined according to step 2, and the fracturing simulation of the implementation unit is carried out ( Figure 3), the vertical distance from the position where the formation pressure increases by ≤6MPa to the implementation unit is the distance limit between the drilling well and the production well under the column implementation mode. In the next step, for the adjacent implementation units, fracturing simulation and numerical simulation are carried out at different times 1-24 months after the implementation of the first implementation unit. When the difference between the upper and lower fracture heights of the second implementation unit after fracturing is less than 10m and the predicted single well EUR does not differ by more than 5% from the predicted EUR of the first implementation unit, the time interval between the two implementation units is the time limit between the fracturing well and the production well under the column implementation mode.

[0059] In step 104, based on the division of implementation units and the safe implementation boundaries, the implementation sequence between units is optimized. At the same time, combined with the layout of the ground drilling rig and fracturing vehicle group, the unified implementation sequence optimization is carried out above and below ground to establish an integrated implementation model above and below ground.

[0060] Step 104 specifically includes:

[0061] Establish an efficient production implementation model for the three-dimensional development of continental shale oil. Under the "column" implementation unit division method, use the maximum number of implementation unit wells determined in step 2 and the distance and time limits determined in step 3 to create a "vertical and horizontal push tank" operation mode: first, based on the maximum number of implementation unit wells, comprehensively consider the number of vertical deployment layers of three-dimensional development, and use half of the number of vertical deployment layers as the number of implementation unit wells in each column; second, based on the distance limit of interference between implementation units, use the distance limit / (well spacing / 2) method to determine the first batch of completed drilling implementation units (for example, if the distance limit is 600m and the well spacing is 400m, then The first three implementation units must be drilled in sequence, and the first implementation unit must be fracturing and put into production, and the fourth implementation unit must be drilled); finally, the fracturing time of the second implementation unit is determined according to the time limit of interference between the implementation units. After the fracturing of the second implementation unit is completed, the next implementation unit (the fifth implementation unit) with a distance limit away from it is drilled; the third implementation unit is fracturing and put into production, and the sixth implementation unit is drilled. There is a distance limit between the drilling unit and the production unit, and a time limit between the fracturing and drilling of the two adjacent units, and so on. Figure 4). In the "row" implementation unit division method, the maximum number of implementation unit wells determined in step 2 and the distance and time limits determined in step 3 are used to create a "horizontal vertical push Tank" operation mode: first, based on the maximum number of implementation unit wells, the maximum horizontal deployment range of the three-dimensional well network is comprehensively considered, and the number of implementation unit wells in each row is determined by "half of the maximum deployment range / well spacing"; secondly, based on the distance limit of interference between implementation units, the first batch of implementation units to be drilled is determined according to the distance limit / layer spacing method (for example: the distance limit is 100m, the layer spacing is 50m, Then, it is necessary to drill two implementation units in sequence first, and fracturing and putting the first implementation unit into production, and drilling the third implementation unit); finally, according to the time limit of interference between the implementation units, determine the fracturing time of the second implementation unit. After the fracturing of the second implementation unit is completed, the next implementation unit (the fourth implementation unit) with a distance limit away from it is drilled; in the next step, the third implementation unit is fracturing and put into production, and the fifth implementation unit is drilled. There is a distance limit between the drilling unit and the production unit, and a time limit between the fracturing and drilling of the two adjacent units, and so on. Figure 5 ).

[0062] In step 105, the mine field is practically laid out according to the longitudinal push and transverse push Tank operation modes, and the subsequent implementation distance and implementation time of the two modes are iteratively optimized according to the monitoring results during the implementation process.

[0063] Step 105 specifically includes:

[0064] According to the vertical and horizontal push tank operation modes, combined with surface drilling rigs and fracturing truck groups, the mine field is practically laid out. During implementation, the pressure interference between two implementation units within a certain distance limit and the differences in the expansion of artificial fractures and the degree of pressure rise in adjacent implementation units are monitored. Based on the actual monitoring results, the subsequent implementation distance and implementation time of the two modes are iteratively optimized. If there is significant interference between wells or casing damage and casing change occurs during well pressure, the layer spacing is increased during vertical advancement, and the interference between wells is further monitored and analyzed. The layer spacing is iteratively updated. The layer spacing when there is no significant interference between wells and casing damage and casing change is the layer spacing implemented in this mode; the well spacing is increased during horizontal advancement, and the interference between wells is further monitored and analyzed. The well spacing is iteratively updated. The well spacing when there is no significant interference between wells and casing damage and casing change is the well spacing implemented in this mode.

[0065] Example 2

[0066] A method for establishing an efficient production implementation model for three-dimensional development of shale oil, comprising:

[0067] Step 1: Based on the geological characteristics of the 3D well network deployment area, establish different implementation unit division methods for the 3D well network. In areas with well-developed bedding fractures, the implementation units are primarily divided by "columns," with the 3D well network divided into multiple implementation units by column. In areas with well-developed high-angle structural fractures, the implementation units are primarily divided by "rows," with the 3D well network divided into multiple implementation units by row. If development technical policies such as reasonable well spacing and layer spacing for the 3D well network are unclear, the implementation unit division is based on the test content of the 3D well network. If the test content is a layer spacing test, the implementation unit division is based on the "row" method; if the test content is a well spacing test, the implementation unit division is based on the "column" method.

[0068] Step 2: For each implementation unit divided by "columns" and "rows," post-fracturing in-situ stress simulation is performed using both fracturing simulation and numerical simulation methods, depending on the number of wells in the unit. The minimum stress change (6 MPa) resulting from stress concentration leading to casing damage and deformation is used as the upper limit of stress change during fracturing to determine the number of wells in the implementation unit. This reduces the risk of casing damage and deformation caused by stress concentration during fracturing. In actual implementation, the number of wells in the unit is less than this limit.

[0069] Step 3: Use fracturing simulation and numerical simulation to simulate the interference between implementation units and determine the distance and time limit of drilling, pressure and injection for each implementation unit: Under the "column" implementation unit division method, determine the maximum number of implementation unit wells according to step 2, conduct fracturing simulation for the implementation unit, and determine the distance limit between the drilling well and the production well based on the minimum stress change value (6 MPa). Next, conduct fracturing simulation and numerical simulation at different times after the implementation of the first implementation unit. Based on the changes in the upper and lower fracture heights and the EUR of the single well after the second implementation unit is fracturing, determine the time limit between the fracturing well and the production well under the column implementation mode. Under the "row" implementation unit division method, determine the maximum number of implementation unit wells according to step 2, conduct fracturing simulation for the implementation unit, and determine the distance limit between the drilling well and the production well under the column implementation mode based on the minimum stress change value (6 MPa). Next, conduct fracturing simulation and numerical simulation for adjacent implementation units at different times after the implementation of the first implementation unit. Based on the changes in the upper and lower fracture heights and the EUR of the single well after the second implementation unit is fracturing, determine the time limit between the fracturing well and the production well under the column implementation mode.

[0070] Step 4: Establish an efficient production model for three-dimensional development of continental shale oil. Using the "column" implementation unit division method, the maximum number of implementation unit wells determined in Step 2 and the distance and time limits determined in Step 3 are used to create a "vertical and horizontal tank" operation mode: First, based on the maximum number of implementation unit wells, the number of vertical deployment layers for three-dimensional development is comprehensively considered, and the number of implementation unit wells in each column is half of the number of vertical deployment layers. Second, based on the distance limit for interference between implementation units, the first batch of completed implementation units is determined. Finally, based on the time limit for interference between implementation units, the fracturing time of the second implementation unit is determined. After the fracturing of the second implementation unit is completed, the implementation unit (the fifth implementation unit) one distance limit away from it is drilled. Next, the third implementation unit is fracturing and put into production, and the sixth implementation unit is drilled. The drilling unit and the production unit are separated by a distance limit, and the fracturing and drilling of adjacent units are separated by a time limit, and so on. Under the "row" implementation unit division method, the "horizontal vertical push tank" operation mode is created using the maximum number of implementation unit wells determined in step 2 and the distance and time limits determined in step 3: first, based on the maximum number of implementation unit wells limit, the maximum lateral deployment range of the three-dimensional well network is comprehensively considered, and the number of implementation unit wells in each row is calculated as "half of the maximum deployment range / well spacing"; second, based on the distance limit of interference between implementation units, the first batch of drilled implementation units is determined according to the distance limit / layer spacing method; finally, based on the time limit of interference between implementation units, the fracturing time of the second implementation unit is determined. After the fracturing of the second implementation unit is completed, the implementation unit (the fourth implementation unit) one distance limit away from it is drilled; in the next step, the third implementation unit is fracturing and put into production, and the fifth implementation unit is drilled. There is a distance limit between the drilling unit and the production unit, and a time limit between the fracturing and drilling of two adjacent units, and so on.

[0071] Step 5, iterative optimization of mine field practice: According to the vertical push and horizontal push tank operation modes, the mine field practice layout is carried out in combination with the ground drilling rig and fracturing vehicle group. During the implementation process, the pressure interference between two implementation units at a certain distance limit and the differences in the expansion of artificial fractures and the degree of pressure rise of adjacent implementation units are monitored. According to the actual monitoring results, the subsequent implementation distance and implementation time of the two modes are iteratively optimized.

[0072] Beneficial effects: The present invention is easy to implement, effective, and highly operational, and has better applicability in the development of continental shale oil. It can effectively reduce the interference between wells in the development of well groups, reduce construction risks, speed up production construction, shorten the investment cycle, and solve the problem of efficient production construction in the three-dimensional development of continental fault-depression shale oil.

[0073] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for establishing an efficient production implementation model for shale oil three-dimensional development, characterized in that: The establishment method comprises: Step S1: Determine the division method of the implementation units of the three-dimensional well group and divide the implementation units; Step S2: Determine the number of implementation unit wells; Step S3: Optimize implementation limits; Step S4: Establish a three-dimensional development and production model to form two continental shale oil production models; Step S5: Iteratively optimize the two continental shale oil production modes.

2. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 1, characterized in that: The step S1: determining the division method of the implementation units of the three-dimensional well group, and performing effective division of the implementation units specifically includes: Determine the basis for dividing the implementation units based on the geological conditions and test content of the three-dimensional well network, determine the division method of the three-dimensional well group implementation units, and carry out effective division of the implementation units.

3. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 1, characterized in that: The method of determining the division of the implementation units according to the geological conditions and test contents of the three-dimensional well network specifically includes: In areas where bedding fractures are well developed, the implementation units are mainly divided into columns, and the three-dimensional well pattern is divided into multiple implementation units by column; In areas with high-angle structural fractures, the implementation units are mainly divided by rows, and the three-dimensional well pattern is divided into multiple implementation units by rows; If the development technical policies such as reasonable well spacing and layer spacing of the three-dimensional well network are not clear, the implementation unit division shall be carried out considering the test content of the three-dimensional well network; If the test content is a layer spacing test, the unit division shall be carried out in the row division mode; If the test content is a well spacing test, the unit division shall be carried out in a column-based manner.

4. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 1, characterized in that: The step S2: determining the number of implementation unit wells specifically includes: using fracturing simulation and numerical simulation methods to determine the minimum number of wells that does not generate stress concentration and cause serious fracturing interference specifically includes: For the implementation units divided by columns and rows, the post-fracturing ground stress simulation of the implementation units is carried out using fracturing simulation and numerical simulation methods according to the different numbers of unit wells; The minimum stress change value when stress concentration causes casing damage and casing deformation is used as the upper limit of stress change during fracturing to determine the limit of the number of wells in the implementation unit, thereby reducing the risk of casing damage and casing deformation caused by stress concentration during fracturing. In actual implementation, the number of wells in the unit is less than the above limit.

5. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 1 is characterized in that: The step S3: optimizing the implementation limit specifically includes: Fracturing simulation and numerical simulation are used to determine how the degree of inter-well interference changes with distance and time, and to establish distance and time boundaries between multiple implementation units.

6. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 5, characterized in that: The method of using fracturing simulation and numerical simulation to determine the variation of the degree of interference between wells with distance and time, and establishing the distance and time boundaries between multiple implementation units specifically includes: Use fracturing simulation and numerical simulation to simulate the interference between implementation units and determine the distance and time limit of drilling-pressure-throwing implementation of each implementation unit; Under the column-based implementation unit division method, according to the maximum number of wells in the implementation unit, the fracturing simulation of the implementation unit is carried out, and the distance limit between the drilling well and the production well is determined according to the minimum stress change value; Conduct fracturing simulations and numerical simulations at different times after the first implementation unit. Based on the changes in upper and lower fracture heights and single-well EUR after the second implementation unit, determine the time limit between fracturing wells and production wells in the column implementation mode. Under the row-based implementation unit division method, the fracturing simulation of the implementation unit is carried out according to the maximum number of implementation unit wells, and the distance limit between the drilling wells and the production wells under the column-based implementation mode is determined according to the minimum stress change value; For adjacent implementation units, fracturing simulation and numerical simulation were carried out at different times after the implementation of the first implementation unit. According to the changes in the upper and lower fracture heights and the EUR of the single well after the fracturing of the second implementation unit, the time limit between the fracturing wells and the production wells under the column implementation mode was determined.

7. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 6, characterized in that: The minimum stress change value is 6 MPa.

8. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 1, characterized in that: The step S4: establishing a three-dimensional development and production model to form two continental shale oil production models specifically includes: establishing a three-dimensional development and production model, and optimizing the combination of implementation sequences between units based on the division method of implementation units and safe implementation boundaries to form two continental shale oil production models.

9. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 1, characterized in that: The step S5: iteratively optimizing the two continental shale oil production modes specifically includes: field practice verification, combining the layout of ground drilling rigs and fracturing vehicles, optimizing the unified implementation sequence above and below ground, and experimentally verifying the rationality and field operation reliability of the two implementation modes, and iteratively optimizing the two continental shale oil production modes.

10. The method for establishing a high-efficiency production implementation model for three-dimensional development of shale oil according to claim 9, characterized in that: The iterative optimization of the two continental shale oil production modes specifically includes: According to the vertical and horizontal push tank operation modes, the mine field is practically laid out in combination with ground drilling rigs and fracturing trucks. During the implementation process, the pressure interference between two implementation units at a certain distance and the regular differences in the expansion of artificial fractures and the degree of pressure rise in adjacent implementation units are monitored; According to the actual monitoring results, the subsequent implementation distance and implementation time of the two continental shale oil production models are iteratively optimized.

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