Fracturing operation plan determination method, device, and nonvolatile storage medium

Abstract

This invention discloses a method, apparatus, and non-volatile storage medium for determining fracturing operation schemes. The method includes: acquiring wellbore data and geological parameters, wherein the wellbore data describes the trajectory of multiple wells within a target platform, and the geological parameters describe the geological information of the target platform; simulating fracturing operation on the target platform using multiple fracturing operation schemes based on the wellbore data and geological parameters, obtaining multiple fracture morphologies, wherein each fracture morphology describes the fracture morphology of multiple wells within the target platform; and determining a target scheme from the multiple fracturing operation schemes based on the multiple fracture morphologies. This invention solves the technical problem of unsatisfactory operation results due to the inability to scientifically select oil and gas wellbore fracturing operation schemes.

Description

Technical Field

[0001] This invention relates to the field of petroleum exploration technology, and more specifically, to a method, apparatus, and non-volatile storage medium for determining fracturing operation schemes. Background Technology

[0002] Fracturing is an important way to transform low-permeability oil and gas reservoirs and achieve efficient development. Temporary plugging and redirection fracturing technology can seal the original fractures, redirect the fractures, and form new fractures, thereby forming a complex fracture network system, increasing the drainage area of ​​oil and gas wells, and achieving the goal of increasing oil and gas well production.

[0003] When fracturing oil and gas wells, there is no systematic method to select the appropriate fracturing construction scheme based on the geological conditions of different areas and the shape of the oil and gas wellbore.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a method, apparatus, and non-volatile storage medium for determining fracturing construction schemes, in order to at least solve the technical problem of unsatisfactory construction results caused by the inability to scientifically select fracturing construction schemes for oil and gas wells.

[0006] According to one aspect of the present invention, a method for determining a fracturing operation scheme is provided, comprising: acquiring wellbore data and geological parameters, wherein the wellbore data is used to describe the trajectory of multiple wellbores within a target platform, and the geological parameters are used to describe the geological information of the target platform; simulating fracturing operation on the target platform using multiple fracturing operation schemes based on the wellbore data and geological parameters, obtaining multiple fracture morphologies, wherein each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform; and determining a target scheme from the multiple fracturing operation schemes based on the multiple fracture morphologies.

[0007] Optionally, based on wellbore data and geological parameters, simulations are performed to conduct fracturing operations on the target platform using multiple fracturing schemes, resulting in multiple fracture morphologies. This includes: determining a first scheme and a second scheme from the multiple fracturing schemes, wherein the first scheme includes first construction parameters, the second scheme includes second construction parameters, the first construction parameters correspond to a first construction intensity and a first construction sequence, the second construction parameters correspond to a second construction intensity and a second construction sequence, the first construction intensity and the second construction intensity are the same, and the first construction sequence and the second construction sequence are different; based on wellbore data and geological parameters, simulations are performed to conduct fracturing operations on the target platform using multiple fracturing schemes according to the first construction parameters and the second construction parameters, resulting in a first fracture morphology and a second fracture morphology, wherein the multiple fracture morphologies include both the first fracture morphology and the second fracture morphology.

[0008] Optionally, based on multiple fracture morphologies, a target scheme is determined from multiple fracturing construction schemes, including: determining the first uniformity corresponding to the first fracture morphology and the second uniformity corresponding to the second fracture morphology; if the difference between the first uniformity and the second uniformity does not exceed a uniformity threshold, determining a target construction sequence based on mechanical mechanisms, wherein the target construction sequence is one of the construction sequences corresponding to the first scheme and the second scheme respectively; if the difference between the first uniformity and the second uniformity exceeds a uniformity threshold, determining the construction sequence corresponding to the fracture morphology with the larger uniformity as the target construction sequence; and determining the target scheme from multiple fracturing construction schemes based on the target construction sequence.

[0009] Optionally, based on the target construction sequence, a target scheme is determined from multiple fracturing construction schemes, including: determining multiple reference schemes that match the target construction sequence, where the multiple reference schemes correspond to multiple different construction intensities; conducting construction simulations on the target area under multiple construction intensities to obtain multiple regional fracture morphologies, where the target area includes the target platform and other platforms besides the target platform; determining the regional construction sequence of the platforms included in the target area; conducting construction simulations on the target area under multiple construction intensities according to the regional construction sequence to obtain multiple regional fracture morphologies; determining the target construction intensity from multiple construction intensities based on the multiple regional fracture morphologies; and determining the scheme corresponding to the target construction intensity from multiple reference schemes as the target scheme.

[0010] Optionally, based on the crack morphology of multiple regions, a target construction intensity is determined from multiple construction intensities, including: determining multiple stress differences corresponding to the crack morphology of multiple regions, wherein the stress difference is the difference between the maximum and minimum stress in the horizontal direction; and selecting the construction intensity corresponding to the minimum stress difference among the multiple stress differences as the target construction intensity.

[0011] Optionally, based on wellbore data and geological parameters, multiple fracturing construction schemes are simulated to perform fracturing construction on the target platform, resulting in multiple fracture morphologies. This includes: establishing a three-dimensional geometric model of multiple wellbores within the target platform based on wellbore data; generating a three-dimensional dynamic simulation model based on the three-dimensional geometric model and geological parameters, wherein the three-dimensional dynamic simulation model is a dynamic simulation model used to simulate fracturing construction scenarios; and inputting multiple construction parameters corresponding to multiple fracturing construction schemes into the three-dimensional dynamic simulation model to obtain multiple fracture morphologies.

[0012] Optionally, the method further includes: determining the length of each of the multiple fractures and the average length of the multiple fractures according to the target fracture morphology corresponding to the target scheme, wherein the target fracture morphology includes multiple fractures; determining the target fracture from the multiple fractures by comparing the multiple fractures sequentially with the average length, wherein the difference between the length of the target fracture and the average length is greater than a length threshold; adjusting the fracturing intensity of the target fracture in the target scheme to obtain an optimized scheme; and constructing multiple wells within the target platform according to the optimized scheme.

[0013] According to another aspect of the present invention, a fracturing operation scheme determination device is also provided, comprising: an acquisition module for acquiring wellbore data and geological parameters, wherein the wellbore data is used to describe the trajectory of multiple wellbores within a target platform, and the geological parameters are used to describe the geological information of the target platform; a simulation module for simulating multiple fracturing operation schemes to perform fracturing operation on the target platform based on the wellbore data and geological parameters, thereby obtaining multiple fracture morphologies, wherein each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform; and a determination module for determining a target scheme from the multiple fracturing operation schemes based on the multiple fracture morphologies and fracture morphology selection conditions.

[0014] According to another aspect of the present invention, a non-volatile storage medium is also provided, the non-volatile storage medium including a stored program, wherein, when the program is running, the device where the non-volatile storage medium is located is controlled to execute any of the above-described fracturing construction scheme determination methods.

[0015] According to another aspect of the present invention, a computer device is also provided, the computer device including a processor, the processor being configured to run a program, wherein the program executes any of the above-described fracturing construction scheme determination methods during runtime.

[0016] In this embodiment of the invention, wellbore data and geological parameters are acquired. The wellbore data describes the trajectory of multiple wellbores within the target platform, and the geological parameters describe the geological information of the target platform. Based on the wellbore data and geological parameters, simulations are performed to conduct fracturing operations on the target platform using multiple fracturing schemes, resulting in multiple fracture morphologies. Each fracture morphology describes the fracture morphology of multiple wellbores within the target platform. Based on the multiple fracture morphologies, a target scheme is determined from the multiple fracturing schemes. This achieves the goal of determining the fracturing operation scheme for the wellbore based on its geological conditions and morphology, thereby achieving the technical effect of more specifically determining the optimal fracturing operation scheme for wellbores within a fixed area. This solves the technical problem of unsatisfactory construction results due to the inability to scientifically select oil and gas wellbore fracturing operation schemes. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 A hardware block diagram of a computer terminal for implementing a method for determining fracturing construction schemes is shown.

[0019] Figure 2 This is a flowchart illustrating a method for determining a fracturing construction scheme according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a "zipper-style" construction sequence provided by an optional embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the fracture morphology corresponding to the well-by-well "zipper-style" construction scheme provided by an optional embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the crack morphology corresponding to the "zipper-like" construction scheme of first the two sides and then the middle provided by the optional embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the crack morphology corresponding to the inter-platform construction scheme provided by an optional embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of a horizontal well geometry model provided according to an optional embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the optimized points provided by an optional embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of pressure distribution provided according to an optional embodiment of the present invention;

[0027] Figure 10 This is a structural block diagram of a fracturing construction scheme determination device provided according to an embodiment of the present invention. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] First, some nouns or terms that appear in the description of the embodiments of this application shall be interpreted as follows:

[0031] The BK criterion is a failure criterion for judging mixed-type failure based on the energy release rate.

[0032] Stimulated Reservoir Volume (SVR) is the volume affected by newly opened fractures and secondary fractures that re-open after fracturing.

[0033] Effective Stimulated Reservoir Volume (ESVR) is a key factor affecting the effectiveness of volumetric fracturing horizontal wells in shale gas reservoirs.

[0034] According to an embodiment of the present invention, a method for determining a fracturing construction scheme is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0035] The method embodiment provided in Embodiment 1 of this application can be executed on a mobile terminal, computer terminal, or similar computing device. Figure 1 A hardware block diagram of a computer terminal for implementing a method to determine fracturing operation schemes is shown. Figure 1As shown, the computer terminal 10 may include one or more processors (shown as 102a, 102b, ..., 102n in the figure) (the processor may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of a BUS bus), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer terminal 10 may also include... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0036] It should be noted that the aforementioned one or more processors and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits may be implemented wholly or partially as software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuits may be a single, independent processing module, or may be wholly or partially integrated into any other element in the computer terminal 10. As involved in the embodiments of this application, the data processing circuits serve as processor control (e.g., selection of a variable resistor termination path connected to an interface).

[0037] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the fracturing construction scheme determination method in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby realizing the fracturing construction scheme determination method of the aforementioned application. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0038] The display may be, for example, a touchscreen liquid crystal display (LCD) that allows the user to interact with the user interface of the computer terminal 10.

[0039] Figure 2 This is a flowchart illustrating the method for determining a fracturing construction scheme according to an embodiment of the present invention, as shown below. Figure 2 As shown, the method includes the following steps:

[0040] Step S202: Obtain wellbore data and geological parameters, wherein the wellbore data is used to describe the trajectory of multiple wells within the target platform, and the geological parameters are used to describe the geological information of the target platform.

[0041] In this step, the target platform is the platform where fracturing operations are to be performed. The method in this embodiment can be used to determine the fracturing operation plan for the target platform. The target platform is located within a certain geographical area and includes multiple wellbores. The wellbores included in the platform are horizontal wells. Before determining the fracturing operation plan, wellbore data of the horizontal wells within the target platform and geological parameter information of the geographical area where the target platform is located can be obtained first. Among them, the wellbore data can be used to describe the wellbore trajectory and morphology of multiple wells within the target platform, including well depth, inclination angle, azimuth angle, build-up point depth, and horizontal displacement data of the build-up section, etc.; the geological parameters include horizontal well reservoir physical parameters and rock mechanical parameters, specifically at least one of the following parameters: formation burial depth, original formation pressure, original horizontal maximum geostress, original horizontal minimum geostress, direction of horizontal maximum geostress, Young's modulus of rock, Poisson's ratio, matrix porosity, matrix permeability, fracturing fluid viscosity, hydrodynamic viscosity, and fluid compressibility coefficient.

[0042] Step S204: Based on wellbore data and geological parameters, the simulation employs multiple fracturing construction schemes to carry out fracturing construction on the target platform, resulting in multiple fracture morphologies. Each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform.

[0043] In this step, based on the acquired wellbore data and geological parameters, the morphology of fractures generated in multiple horizontal wells within the target platform under multiple fracturing construction schemes is simulated to obtain multiple fracture morphologies corresponding to multiple fracturing construction schemes.

[0044] Step S206: Based on multiple fracture morphologies, determine the target scheme from multiple fracturing construction schemes.

[0045] In this step, the target scheme is the final fracturing construction scheme used to construct multiple horizontal wells within the target platform. By analyzing multiple fracture morphologies, the most oil-producing fracture morphology can be determined, and the fracturing construction scheme corresponding to the most oil-producing fracture morphology is selected as the target scheme.

[0046] Through the above steps, the goal of determining the fracturing operation plan for the wellbore based on the geological conditions and morphology of the wellbore is achieved. This enables a more targeted determination of the optimal fracturing operation plan for a wellbore within a fixed area, thereby solving the technical problem of unsatisfactory oil production results caused by the inability to scientifically select fracturing operation plans for oil and gas wells.

[0047] As an optional embodiment, based on wellbore data and geological parameters, simulations are performed to conduct fracturing operations on the target platform using multiple fracturing schemes, resulting in multiple fracture morphologies. This can be achieved through the following steps: determining a first scheme and a second scheme from the multiple fracturing schemes, wherein the first scheme includes first construction parameters, and the second scheme includes second construction parameters. The first construction parameters correspond to a first construction intensity and a first construction sequence, and the second construction parameters correspond to a second construction intensity and a second construction sequence. The first construction intensity and the second construction intensity are the same, and the first construction sequence and the second construction sequence are different. Based on wellbore data and geological parameters, simulations are performed to conduct fracturing operations on the target platform using multiple fracturing schemes according to the first construction parameters and the second construction parameters, respectively, to obtain a first fracture morphology and a second fracture morphology, wherein the multiple fracture morphologies include both the first fracture morphology and the second fracture morphology.

[0048] Optionally, among the multiple fracturing construction schemes, each scheme has a set of construction parameters, and each set of construction parameters includes construction intensity and construction sequence. The construction sequence can include two types. Figure 3 This is a schematic diagram of a "zipper-style" construction sequence provided by an optional embodiment of the present invention, such as... Figure 3 As shown in (a), this is the "zipper-style" construction sequence for each well, as follows: Figure 3 As shown in (b), the construction sequence is a "zipper-like" approach, starting from the sides and ending in the middle. There can be multiple construction intensities, meaning that the construction parameters for each of the multiple construction schemes are different from those of other schemes, although some parameters may be the same. For example, two schemes may have different construction intensities but the same construction sequence, or two may have different construction sequences but the same construction intensity. In this optional embodiment, two schemes with the same construction intensity but different construction sequences are selected, designated as the first scheme and the second scheme, respectively. The corresponding construction parameters are the first construction parameter and the second construction parameter, respectively. Multiple fracturing construction schemes are simulated based on the first and second construction parameters to perform fracturing construction on multiple horizontal wells within the target platform, yielding the first fracture morphology and the second fracture morphology.

[0049] As an optional embodiment, determining the target scheme from multiple fracturing construction schemes based on multiple fracture morphologies can be achieved through the following steps: determining the first uniformity corresponding to the first fracture morphology and the second uniformity corresponding to the second fracture morphology; if the difference between the first uniformity and the second uniformity does not exceed a uniformity threshold, determining the target construction sequence based on mechanical mechanisms, wherein the target construction sequence is one of the construction sequences corresponding to the first scheme and the second scheme respectively; if the difference between the first uniformity and the second uniformity exceeds a uniformity threshold, determining the construction sequence corresponding to the fracture morphology with the larger uniformity as the target construction sequence; and determining the target scheme from multiple fracturing construction schemes based on the target construction sequence.

[0050] Optional, Figure 4 This is a schematic diagram of the fracture morphology corresponding to the well-by-well "zipper-style" construction scheme provided by an optional embodiment of the present invention. Figure 5 This is a schematic diagram of the crack morphology corresponding to the "zipper-like" construction scheme of first the two sides and then the middle provided by an optional embodiment of the present invention, as shown below. Figure 4 As shown, the fracture morphology obtained from the simulation of a "zipper-style" well-by-well construction sequence is as follows. Figure 5 The image shows the crack morphology obtained from simulating a "zipper-like" construction sequence of first the two sides and then the middle. Analyzing and comparing the first and second crack morphologies, when the difference between the first and second uniformity is large, exceeding a predetermined uniformity threshold, the crack morphology with greater uniformity can be determined. Therefore, the construction sequence corresponding to the crack morphology with better uniformity is chosen as the target construction sequence, as greater crack uniformity is beneficial for increasing oil production. When the difference between the first and second uniformity is small, not exceeding the predetermined uniformity threshold, it is difficult to determine the difference in future oil production between the two methods based solely on the uniformity difference. Therefore, based on mechanical mechanisms, a fluid-structure interaction damage model can be applied to calculate and compare the future oil production values ​​of the two construction sequences, selecting the construction sequence with the higher future oil production as the target construction sequence.

[0051] It should be noted that after hydraulic fracturing initiates rock fracturing, the hydraulic fractures begin to propagate under hydrodynamic forces as fracturing fluid is continuously injected. The fracture geometry is primarily controlled by rock mechanical parameters, the geostress field, and injection parameters. The dynamic propagation of hydraulic fractures is a complex physical process, mainly involving two sets of criteria: ① the laws of conservation of momentum, mass, and energy; ② the dynamic propagation criteria and fluid loss equations.

[0052] Specifically, the main processes in the above-mentioned calculation based on mechanical mechanisms and application of the fluid-structure interaction damage model are as follows. Those skilled in the art can obtain the fracture morphology of the target area according to the hydraulic fracturing analysis process based on the coupling of fluid flow and geomechanics provided by the fluid-structure interaction damage model, and optimize the fracturing scheme with better overall fracture modification and higher fracture complexity based on the following analysis process. The analysis process provided by the fluid-structure interaction damage model mainly involves the analysis of geological conditions, fracturing fluid flow and loss, fracture initiation and propagation, etc., as detailed below:

[0053] 1.1 Geological State Equation

[0054] Based on Biot's consolidation theory, when a porous medium is filled with fluid, the total stress and effective stress satisfy the following relationship:

[0055]

[0056] In the formula, σ is the total stress, and the unit is MPa; P represents the effective stress, measured in MPa; ξ represents the effective stress coefficient, which is dimensionless; w This represents the fluid pore pressure, measured in MPa.

[0057] The equilibrium equations for the deformation mechanics of a solid rock skeleton are as follows:

[0058]

[0059] In the formula, This is the effective stress matrix, in Pa; p w δε is the fluid pore pressure, in Pa; δε is the virtual strain rate matrix, in s. -1 δv is the imaginary velocity vector, in m / s; t is the surface force vector, in N / m. 2 f is the body force vector, in N / m. 3 .

[0060] The continuity equation for reservoir fluid flow is:

[0061]

[0062] In the formula, J represents the volume change ratio of the rock, which is dimensionless; ρ w Fluid density, in kg / m³ 3 ;n w V represents porosity, which is dimensionless; w denoted as , where is the fluid velocity in the solid, in m / s; and denoted as x, a spatial vector, in m / s.

[0063] 1.2 Fracturing fluid flow and filtration

[0064] Assuming the slickwater fracturing fluid is an incompressible Newtonian fluid, its flow satisfies Darcy's equation. Then:

[0065]

[0066] In the formula: q f Flow velocity is expressed in m / s; w is crack aperture in mm; p f ρ represents the fluid pressure within the fracture, in MPa; μ represents the fracturing fluid viscosity, in MPa·s.

[0067] The mass conservation equation for the fluid inside the crack is:

[0068]

[0069] In the formula: V1 is the fracturing fluid loss per unit area, in m³. 3 / (m 2 ·s)

[0070] The filtration equation for fracturing fluid loss from the fracture to the matrix is:

[0071] V1 = c V (p f -p w )

[0072] In the formula: c V This is the fracturing fluid filtration coefficient, expressed in m / (MPa·s).

[0073] 1.3 Criteria for Crack Initiation and Propagation

[0074] The behavior of hydraulic fractures is described using the maximum principal stress criterion, namely:

[0075]

[0076] In the formula, f is the maximum principal stress ratio, which is dimensionless; σ max The maximum principal stress that can be withstood is expressed in MPa; <> indicates that it can only withstand tensile stress. The allowable principal stress is expressed in MPa.

[0077] When the above equations are satisfied, hydraulic fractures initiate, rock stiffness begins to degrade, and damage occurs. The stiffness degradation process can be described as follows:

[0078]

[0079] In the formula, The three stress components are calculated by the traction force separation criterion under the undamaged state, with units of MPa; t is the actual stress component, with units of MPa; D is the damage variable, with a value between 0 and 1.

[0080] Furthermore, the BK criterion is used to define the mixing mode ratio, describing the propagation process of tension-shear combined hydraulic fractures from an energy perspective. This criterion assumes that the energy release rates in the first and second tangential directions are equal, i.e.:

[0081]

[0082] In the formula, These represent the critical energy release rates in the unit normal, first tangential, and second tangential directions, respectively, in N / mm; G n G s G t These represent the energy release rates in the current normal, first tangential, and second tangential directions of the element, respectively, in N / mm; G C η represents the critical energy release rate of a tension-shear combined hydraulic fracture, expressed in N / mm; η is a dimensionless constant related to the properties of the rock itself.

[0083] Therefore, the hydraulic fracturing analysis process based on the coupling of fluid flow and geomechanics can be completed. Based on the fracture morphology and the difference between the maximum and minimum horizontal in-situ stress within the platform after fracturing, the construction scheme between platforms with the smallest bidirectional stress difference can be selected. At the same time, after selecting the scheme, the construction scheme can be further optimized, that is, different well spacing and cluster spacing can be designed, and the above analysis process can be repeated to select the fracturing scheme with better overall fracture modification and higher fracture complexity.

[0084] As an optional embodiment, determining the target scheme from multiple fracturing construction schemes based on the target construction sequence can be achieved through the following steps: First, determine multiple reference schemes among the multiple construction schemes that match the target construction sequence, where each reference scheme corresponds to a different construction intensity; second, perform construction simulation on the target area under multiple construction intensities to obtain multiple regional fracture morphologies, where the target area includes the target platform and other platforms besides the target platform; third, determine the regional construction sequence of the platforms included in the target area; fourth, perform construction simulation on the target area under multiple construction intensities according to the regional construction sequence to obtain multiple regional fracture morphologies; fifth, determine the target construction intensity from the multiple construction intensities based on the multiple regional fracture morphologies; and sixth, determine the scheme corresponding to the target construction intensity from the multiple reference schemes as the target scheme.

[0085] Optionally, based on the target construction sequence, multiple construction schemes with the same construction sequence as the target can be selected as reference schemes. These reference schemes have different construction intensities, and the target construction intensity can be determined based on the multiple construction intensities of the reference schemes. Determining the target construction intensity requires first identifying a target area encompassing multiple platforms. The impact of construction on adjacent platforms on the target platform must be considered to better select an appropriate construction intensity. First, a geographical area including the target platform is identified as the target area. Besides the target platform, other platforms exist within the target area. The construction sequence for the multiple platforms within the target area is determined as follows: first construct the platforms at the two ends of the area, then construct the platforms in the middle. The method for determining the target construction intensity is to construct multiple platforms within the target area using different construction intensities according to the regional construction sequence, obtaining the regional fracture morphology of the multiple target areas. The fracture morphology of multiple areas can be analyzed, and the construction intensity corresponding to the fracture morphology most conducive to improving oil production can be selected as the target construction intensity. The target scheme is then determined based on the target construction intensity.

[0086] As an optional embodiment, the target construction intensity can be determined from multiple construction intensities based on multiple regional crack morphologies. This can be achieved through the following steps: determining multiple ground stress differences corresponding to multiple regional crack morphologies, wherein the ground stress difference is the difference between the maximum and minimum ground stress in the horizontal direction; and selecting the construction intensity corresponding to the minimum ground stress difference among the multiple ground stress differences as the target construction intensity.

[0087] Optionally, by comparing multiple stress differences corresponding to fracture morphologies in multiple regions, the fracture morphology in the region with the smallest difference between the maximum and minimum stress in the horizontal direction can be selected as the fracture morphology most conducive to increasing oil production, because a smaller stress difference provides favorable conditions for the complexity of the fracture. Figure 6 This is a schematic diagram of the crack morphology corresponding to the inter-platform construction scheme provided by an optional embodiment of the present invention. Platform 1, platform 2, and platform 3 constitute the target area, as shown below. Figure 6 As shown in (a), this is a schematic diagram of the minimum principal stress in the horizontal direction. Figure 6 (b) shows a schematic diagram of the maximum horizontal principal stress in the horizontal direction.

[0088] As an optional implementation, multiple fracturing operation schemes are simulated to perform fracturing operations on the target platform based on wellbore data and geological parameters, resulting in multiple fracture morphologies. This can be achieved through the following steps: establishing a three-dimensional geometric model of multiple wellbores within the target platform based on wellbore data; generating a three-dimensional dynamic simulation model based on the three-dimensional geometric model and geological parameters, wherein the three-dimensional dynamic simulation model is a dynamic simulation model capable of simulating fracturing operation scenarios; and inputting multiple construction parameters corresponding to multiple fracturing operation schemes into the three-dimensional dynamic simulation model to obtain multiple fracture morphologies.

[0089] Optionally, a three-dimensional dynamic simulation model can be established to simulate the construction of the target platform according to multiple fracturing construction schemes, and obtain the corresponding multiple fracture morphologies as simulation results. Figure 7 This is a schematic diagram of a horizontal well geometry model provided according to an optional embodiment of the present invention, such as... Figure 7 As shown, establishing a three-dimensional dynamic simulation model requires creating three-dimensional geometric models of multiple wells within the target platform based on wellbore data. This can be achieved by combining geological parameters of the geographical area where the target platform is located with the three-dimensional geometric models of multiple wells to generate a three-dimensional dynamic simulation model. By inputting the construction parameters corresponding to the fracturing operation plan, the three-dimensional dynamic simulation model can simulate the changes in geological conditions of multiple wells under the fracturing operation plan, i.e., the generation of fractures in the geographical area where the target platform is located, and simulate the results of fracture propagation. Therefore, the three-dimensional dynamic simulation model can also be called a fracture propagation model. The mechanical basis for establishing the three-dimensional dynamic simulation model is as described above in terms of the mechanical mechanism.

[0090] As an optional embodiment, it can also be achieved through the following steps: determining the length of each of the multiple fractures and the average length of the multiple fractures according to the target fracture morphology corresponding to the target scheme, wherein the target fracture morphology includes multiple fractures; determining the target fracture from the multiple fractures by comparing the multiple fractures sequentially with the average length, wherein the difference between the length of the target fracture and the average length is greater than a length threshold; adjusting the fracturing intensity of the target fracture in the target scheme to obtain an optimized scheme; and constructing multiple wells within the target platform according to the optimized scheme.

[0091] Optionally, based on the target construction intensity and target construction sequence, the fracturing construction scheme that is most conducive to improving oil production can be determined as the target scheme from multiple construction schemes. Alternatively, the target platform can be subjected to fracturing construction through simulation of the target scheme to obtain the fracture morphology corresponding to the target scheme. By analyzing the fracture morphology, the target scheme can be optimized so that when the actual target platform is constructed according to the target scheme, the best fracture propagation effect can be achieved, thereby increasing the oil production of multiple wells in the target platform. The region requiring optimization can be determined based on the length of each fracture in the fracture morphology. Specifically, the length of each fracture in the fracture morphology corresponding to the target scheme and the average length of multiple fractures are determined. The length of each fracture is compared with the average length. When the length of the target fracture is close to the average length (i.e., the difference between the length of the target fracture and the average length is less than a predetermined length threshold), the region where the target fracture is located does not require optimization, and the fracture morphology in this region is relatively favorable for oil production. When the difference between the length of the target fracture and the average length is greater than the length threshold, it indicates that the fracture morphology is uneven, and the fracturing intensity of the target fracture needs to be adjusted to obtain the optimized target scheme. The optimization method is as follows: when the length of the target fracture is greater than the average length, it indicates that the length of the target fracture is too large, and the fracturing intensity in the region where the target fracture is located needs to be reduced, thus reducing the fracturing scale. When the length of the target fracture is less than the average length, it indicates that the length of the target fracture is too small, and the fracturing intensity in the region where the target fracture is located needs to be reduced, thus reducing the fracturing scale. Figure 8 This is a schematic diagram of the optimized points provided by an optional embodiment of the present invention, such as... Figure 8 As shown, the fracturing operation can be optimized according to the fracture morphology: for well 1, the fracturing scale is reduced at point A and increased at point B; for well 2, the number of fracturing clusters and the fracturing scale are increased at point C and the fracturing scale is increased at point D.

[0092] As a specific embodiment, simulated fracturing operations were conducted in the Baikouquan Formation demonstration area, located in the Ma131 fault block of the Ma131 well area. This demonstration area was used as the target area for this embodiment, and a fracturing operation plan was determined for the target area. The reservoir in the target area is the Mahu tight conglomerate reservoir with a rapid initial production decline, and the large horizontal stress difference in the reservoir makes it difficult to form a complex fracture network in the target area. This embodiment effectively intervened in the geostress field by determining the fracturing operation sequence and operation parameters for the target area, resulting in more complex fractures, which is conducive to improving oil production.

[0093] Optionally, this example can use Python programming scripts to process the acquired wellbore data from various platforms, establish corresponding geometric models, and import the geological parameters of the geographical area where the target platform is located into the platform's horizontal well geometric model to establish a three-dimensional dynamic simulation model. Utilizing fluid-solid-damage coupling theory, the dynamic stress field changes and fracture morphology corresponding to different fracturing sequences and intensities are simulated. Finally, the optimal fracturing scheme that minimizes the horizontal stress difference and maximizes the fracture network complexity of the target platform is selected. Specifically, for multiple platforms, fracturing the two sides first and then the middle can create a high-stress field, allowing for more thorough stimulation of the middle wells; using a zipper-like operation between wells within the same platform can reduce the inhibitory effect of stress on fracture extension, promoting full fracture extension, effectively increasing fracture length, and thus improving production.

[0094] In this embodiment, determining the fracturing operation plan for the target area includes the following steps:

[0095] Acquire wellbore data from different platforms within the target area, including well depth, inclination angle, azimuth angle, build-up point depth, and horizontal displacement data of the build-up section, and construct a geometric model of the horizontal wells on the platforms within the target area. For example... Figure 7 As shown, based on Python programming scripts, a Cartesian coordinate system can be established with the wellhead location as the origin, the wellbore's planar position and shape can be corrected according to the wellbore data, and finally the geometric model of the horizontal well can be drawn.

[0096] Geological parameters of the target area, including reservoir physical property data and rock mechanics data, were acquired and imported into the platform's horizontal well geometric model to establish a three-dimensional dynamic simulation model. Specifically, the acquired reservoir physical parameters and rock mechanics parameters are as follows: formation depth 3092.8m, original formation pressure 35MPa, original maximum horizontal stress 68MPa, original minimum horizontal stress 55MPa, direction of maximum horizontal stress N85°E~N95°E, rock Young's modulus 25773MPa, Poisson's ratio 0.206, matrix porosity 7.63%, matrix permeability 1.33mD, fracturing fluid viscosity 27~36mPa·s, hydrodynamic viscosity 0.0076Pa·s, and fluid compressibility coefficient 4×10⁻⁶. -10 Pa -1 .

[0097] In a three-dimensional dynamic simulation model, the well-by-well "zipper-style" fracturing construction mode and the "zipper-style" fracturing construction sequence of first the two sides and then the middle were simulated, resulting in multiple fracture propagation morphologies, such as... Figure 3 As shown, this illustrates different fracturing sequences: a well-by-well "zipper-style" fracturing method and a "zipper-style" method starting from both sides and then moving to the middle. Figure 4 As shown, this is the simulation result of the post-compression fracture morphology of the well-by-well "zipper-style" construction scheme, as follows: Figure 5The figure shows the simulation results of fracture morphology after fracturing using a "zipper-style" fracturing scheme, starting from the two sides and then moving to the middle. Among the two fracture morphologies obtained by fracturing the target platform using the two methods, the first half of both morphologies showed relatively uniform fracture expansion, while the second half exhibited severe uneven expansion. Based on the mechanical mechanism model and analysis of subsequent daily and cumulative production results, the well-by-well "zipper-style" fracturing mode, which yields higher daily and cumulative production, was selected.

[0098] Using the fluid-solid-damage coupling theory and a three-dimensional dynamic simulation model, the dynamic change process of the target platform's in-situ stress is simulated when different fracturing intensities are applied to the two platform wells. The fracturing intensities can include fracturing displacement, fracturing pressure, and total injected fluid volume, etc. Figure 6 As shown, taking the horizontal well in layer T1b3 of the Ma131 three-dimensional well network demonstration area as an example, the simulation shows that the priority construction of platforms 1 and 3 on both sides reduces the biaxial stress difference in the middle platform 2 area from 19.1MPa to 13.2MPa, a reduction of 5.9MPa, which provides conditions for the complication of fractures.

[0099] Based on the fracture propagation morphology obtained after fracturing the target platform using the simulated "zipper-style" fracturing scheme, the fracturing scale and clustering scheme were adjusted. Finally, the optimal fracturing scheme was determined to be a well spacing of 100m, a cluster spacing of 20m, and 2-3 clusters of perforations per segment. Figure 9 This is a schematic diagram of the pressure distribution provided by an optional embodiment of the present invention, such as... Figure 9 The diagram shows the pressure distribution after fracturing and pump shutdown. It clearly shows the high stress field created by the large-volume injection from both sides, resulting in more thorough well stimulation. Based on the fracture morphology of the well-by-well "zipper-style" fracturing method, as... Figure 8 As shown, the fracturing operation can be optimized: for well 1, the fracturing scale is reduced at point A and increased at point B; for well 2, the cluster number and fracturing scale are increased at point C and increased at point D.

[0100] Field tests in this specific embodiment show that adopting the operation sequence of pressing the two sides first and then the middle reduces the biaxial stress difference in the middle area by 5-7 MPa, which is conducive to the development of branch fractures. Using a zipper-like operation reduces the inhibitory effect of stress on fracture extension, which is conducive to the full extension of fractures, resulting in a 15%-20% increase in fracture length and improved production. Microseismic monitoring data shows that the number of microseismic events in the platform wells of the demonstration area is 2.4 times that of previous single wells. The SRV of the middle platform wells is larger, and the aspect ratio is smaller. Simultaneously, the ESRV (62.6 million cubic meters) to the target body (69.32 million cubic meters) ratio reaches 90.3%, indicating that the fractures fully cover the target body, forming more complex artificial fractures. This further demonstrates that by optimizing the well group construction sequence, active artificial intervention in the geostress field can be achieved.

[0101] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0102] Through the above description of the embodiments, those skilled in the art can clearly understand that the fracturing construction scheme determination method according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0103] According to an embodiment of the present invention, an apparatus for implementing the above-described method for determining a fracturing construction scheme is also provided. Figure 10 This is a structural block diagram of the fracturing construction scheme determination device provided in the embodiments of the present invention, such as... Figure 10 As shown, the fracturing construction scheme determination device includes: acquisition module 1002, simulation module 1004 and determination module 1006. The fracturing construction scheme determination device will be described below.

[0104] The acquisition module 1002 is used to acquire wellbore data and geological parameters. The wellbore data is used to describe the trajectory of multiple wellbores within the target platform, and the geological parameters are used to describe the geological information of the target platform.

[0105] The simulation module 1004, connected to the acquisition module 1002, is used to simulate multiple fracturing construction schemes to carry out fracturing construction on the target platform based on wellbore data and geological parameters, and obtain multiple fracture morphologies. Each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform.

[0106] The determination module 1006, connected to the simulation module 1004, is used to determine the target scheme from multiple fracturing construction schemes based on multiple fracture morphologies and fracture morphology selection conditions.

[0107] It should be noted that the acquisition module 1002, simulation module 1004, and determination module 1006 mentioned above correspond to steps S202 to S206 in the embodiments. The three modules and their corresponding steps implement the same instances and application scenarios, but are not limited to the content disclosed in the above embodiments. It should also be noted that the above modules, as part of the device, can run on the computer terminal 10 provided in the embodiments.

[0108] Embodiments of the present invention may provide a computer device. Optionally, in this embodiment, the computer device may be located in at least one of a plurality of network devices in a computer network. The computer device includes a memory and a processor.

[0109] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the fracturing construction scheme determination method and apparatus in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, thereby realizing the aforementioned fracturing construction scheme determination method. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0110] The processor can access information and applications stored in memory via a transmission device to perform the following steps: acquiring wellbore data and geological parameters, wherein the wellbore data is used to describe the trajectory of multiple wellbores within the target platform, and the geological parameters are used to describe the geological information of the target platform; based on the wellbore data and geological parameters, simulating fracturing operations on the target platform using multiple fracturing construction schemes to obtain multiple fracture morphologies, wherein each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform; and determining the target scheme from the multiple fracturing construction schemes based on the multiple fracture morphologies.

[0111] Optionally, the processor may also execute program code for the following steps: Based on wellbore data and geological parameters, simulate fracturing operations on the target platform using multiple fracturing schemes to obtain multiple fracture morphologies, including: determining a first scheme and a second scheme from the multiple fracturing schemes, wherein the first scheme includes first construction parameters, the second scheme includes second construction parameters, the first construction parameters correspond to a first construction intensity and a first construction sequence, the second construction parameters correspond to a second construction intensity and a second construction sequence, the first construction intensity and the second construction intensity are the same, and the first construction sequence and the second construction sequence are different; based on wellbore data and geological parameters, simulate fracturing operations on the target platform using multiple fracturing schemes according to the first construction parameters and the second construction parameters to obtain a first fracture morphology and a second fracture morphology, wherein the multiple fracture morphologies include both the first fracture morphology and the second fracture morphology.

[0112] Optionally, the processor may also execute program code for the following steps: determining a target scheme from multiple fracturing construction schemes based on multiple fracture morphologies, including: determining a first uniformity corresponding to a first fracture morphology and a second uniformity corresponding to a second fracture morphology; determining a target construction sequence based on mechanical mechanisms when the difference between the first uniformity and the second uniformity does not exceed a uniformity threshold, wherein the target construction sequence is one of the construction sequences corresponding to the first scheme and the second scheme respectively; determining the construction sequence corresponding to the fracture morphology with the larger uniformity as the target construction sequence when the difference between the first uniformity and the second uniformity exceeds a uniformity threshold; and determining the target scheme from multiple fracturing construction schemes based on the target construction sequence.

[0113] Optionally, the processor may also execute program code for the following steps: determining a target scheme from multiple fracturing schemes based on the target construction sequence, including: determining multiple reference schemes for the construction schemes that match the target construction sequence, wherein the multiple reference schemes correspond to multiple different construction intensities; performing construction simulations on the target area under multiple construction intensities to obtain multiple regional fracture morphologies, wherein the target area includes the target platform and other platforms besides the target; determining the regional construction sequence of the platforms included in the target area; performing construction simulations on the target area under multiple construction intensities according to the regional construction sequence to obtain multiple regional fracture morphologies; determining the target construction intensity from multiple construction intensities based on the multiple regional fracture morphologies; and determining the scheme corresponding to the target construction intensity from multiple reference schemes as the target scheme.

[0114] Optionally, the processor may also execute program code for the following steps: determining a target construction intensity from multiple construction intensities based on multiple regional crack morphologies, including: determining multiple ground stress differences corresponding to multiple regional crack morphologies, wherein the ground stress difference is the difference between the maximum and minimum ground stress in the horizontal direction; and selecting the construction intensity corresponding to the minimum ground stress difference among the multiple ground stress differences as the target construction intensity.

[0115] Optionally, the processor can also execute program code for the following steps: simulating multiple fracturing construction schemes to perform fracturing construction on the target platform based on wellbore data and geological parameters, obtaining multiple fracture morphologies, including: establishing a three-dimensional geometric model of multiple wellbores within the target platform based on wellbore data; generating a three-dimensional dynamic simulation model based on the three-dimensional geometric model and geological parameters, wherein the three-dimensional dynamic simulation model is a dynamic simulation model capable of simulating fracturing construction scenarios; and inputting multiple construction parameters corresponding to multiple fracturing construction schemes into the three-dimensional dynamic simulation model to obtain multiple fracture morphologies.

[0116] Optionally, the processor may also execute program code for the following steps: determining the length of each of the multiple fractures and the average length of the multiple fractures according to the target fracture morphology corresponding to the target scheme, wherein the target fracture morphology includes multiple fractures; determining the target fracture from the multiple fractures by comparing the length of the multiple fractures with the average length in turn, wherein the difference between the length of the target fracture and the average length is greater than a length threshold; adjusting the fracturing intensity of the target fracture in the target scheme to obtain an optimized scheme; and constructing multiple wells within the target platform according to the optimized scheme.

[0117] This invention provides a method for determining a fracturing operation scheme. By acquiring wellbore data and geological parameters, where the wellbore data describes the trajectory of multiple wells within a target platform and the geological parameters describe the geological information of the target platform; based on the wellbore data and geological parameters, simulations are performed using multiple fracturing operation schemes on the target platform, resulting in multiple fracture morphologies, where each fracture morphology describes the fracture morphology of multiple wells within the target platform; based on the multiple fracture morphologies, a target scheme is determined from the multiple fracturing operation schemes, achieving the goal of determining the fracturing operation scheme for a wellbore based on its geological conditions and morphology. This achieves the technical effect of more specifically determining the optimal fracturing operation scheme for wells within a fixed area, thereby solving the technical problem of lacking a systematic method for selecting appropriate fracturing operation schemes based on the geological conditions and morphology of oil and gas wells in different areas.

[0118] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a non-volatile storage medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc.

[0119] Embodiments of the present invention also provide a non-volatile storage medium. Optionally, in this embodiment, the aforementioned non-volatile storage medium can be used to store the program code executed by the fracturing construction scheme determination method provided in the above embodiments.

[0120] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals.

[0121] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: acquiring wellbore data and geological parameters, wherein the wellbore data is used to describe the trajectory of multiple wellbores within the target platform, and the geological parameters are used to describe the geological information of the target platform; based on the wellbore data and geological parameters, simulating fracturing operations on the target platform using multiple fracturing construction schemes to obtain multiple fracture morphologies, wherein each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform; and determining the target scheme from the multiple fracturing construction schemes based on the multiple fracture morphologies.

[0122] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: Based on wellbore data and geological parameters, simulations are performed to fracturing the target platform using multiple fracturing construction schemes to obtain multiple fracture morphologies, including: determining a first scheme and a second scheme from the multiple fracturing construction schemes, wherein the first scheme includes first construction parameters, the second scheme includes second construction parameters, the first construction parameters correspond to a first construction intensity and a first construction sequence, the second construction parameters correspond to a second construction intensity and a second construction sequence, the first construction intensity and the second construction intensity are the same, and the first construction sequence and the second construction sequence are different; based on wellbore data and geological parameters, simulations are performed to fracturing the target platform using multiple fracturing construction schemes according to the first construction parameters and the second construction parameters to obtain a first fracture morphology and a second fracture morphology, wherein the multiple fracture morphologies include the first fracture morphology and the second fracture morphology.

[0123] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: determining a target scheme from multiple fracturing construction schemes based on multiple fracture morphologies, including: determining a first uniformity corresponding to a first fracture morphology and a second uniformity corresponding to a second fracture morphology; determining a target construction sequence based on mechanical mechanisms when the difference between the first uniformity and the second uniformity does not exceed a uniformity threshold, wherein the target construction sequence is one of the construction sequences corresponding to the first scheme and the second scheme respectively; determining the construction sequence corresponding to the fracture morphology with a larger uniformity as the target construction sequence when the difference between the first uniformity and the second uniformity exceeds a uniformity threshold; and determining the target scheme from multiple fracturing construction schemes based on the target construction sequence.

[0124] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: determining a target scheme from multiple fracturing schemes according to a target construction sequence, including: determining multiple reference schemes from among the multiple construction schemes that match the target construction sequence, wherein the multiple reference schemes correspond to multiple different construction intensities; performing construction simulation on the target area under multiple construction intensities to obtain multiple regional fracture morphologies, wherein the target area includes a target platform and other platforms besides the target; determining the regional construction sequence of the platforms included in the target area; performing construction simulation on the target area under multiple construction intensities according to the regional construction sequence to obtain multiple regional fracture morphologies; determining a target construction intensity from among the multiple construction intensities based on the multiple regional fracture morphologies; and determining the scheme corresponding to the target construction intensity from among the multiple reference schemes as the target scheme.

[0125] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: determining a target construction intensity from multiple construction intensities based on multiple regional crack morphologies, including: determining multiple ground stress differences corresponding to multiple regional crack morphologies, wherein the ground stress difference is the difference between the maximum and minimum ground stress in the horizontal direction; and selecting the construction intensity corresponding to the minimum ground stress difference among the multiple ground stress differences as the target construction intensity.

[0126] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: simulating multiple fracturing construction schemes to perform fracturing construction on the target platform based on wellbore data and geological parameters, obtaining multiple fracture morphologies, including: establishing a three-dimensional geometric model of multiple wellbores within the target platform based on wellbore data; generating a three-dimensional dynamic simulation model based on the three-dimensional geometric model and geological parameters, wherein the three-dimensional dynamic simulation model is a dynamic simulation model capable of simulating fracturing construction scenarios; and inputting multiple construction parameters corresponding to multiple fracturing construction schemes into the three-dimensional dynamic simulation model to obtain multiple fracture morphologies.

[0127] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: determining the length of each of multiple fractures and the average length of the multiple fractures according to the target fracture morphology corresponding to the target scheme, wherein the target fracture morphology includes multiple fractures; determining the target fracture from the multiple fractures by comparing the multiple fractures sequentially with the average length, wherein the difference between the length of the target fracture and the average length is greater than a length threshold; adjusting the fracturing intensity of the target fracture in the target scheme to obtain an optimized scheme; and constructing multiple wells within the target platform according to the optimized scheme.

[0128] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0129] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0130] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0131] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0132] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0133] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a non-volatile storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0134] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method of determining a fracturing treatment plan, the method comprising: include: Acquire wellbore data and geological parameters, wherein the wellbore data is used to describe the trajectory of multiple wells within the target platform, and the geological parameters are used to describe the geological information of the target platform; Based on the wellbore data and geological parameters, the simulation employs multiple fracturing construction schemes to carry out fracturing construction on the target platform, resulting in multiple fracture morphologies. Each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform. Based on the multiple fracture morphologies, a target scheme is determined from the multiple fracturing construction schemes; The simulation, based on the wellbore data and geological parameters, employs multiple fracturing operation schemes to perform fracturing operations on the target platform, resulting in multiple fracture morphologies, including: A first scheme and a second scheme are determined from the plurality of fracturing construction schemes, wherein the first scheme includes a first construction parameter, the second scheme includes a second construction parameter, the first construction parameter corresponds to a first construction intensity and a first construction sequence, the second construction parameter corresponds to a second construction intensity and a second construction sequence, the first construction intensity is the same as the second construction intensity, and the first construction sequence is different from the second construction sequence; Based on the wellbore data and the geological parameters, the target platform is subjected to fracturing operations according to the first construction parameters and the second construction parameters, respectively, by simulating the multiple fracturing operation schemes to obtain a first fracture morphology and a second fracture morphology, wherein the multiple fracture morphologies include the first fracture morphology and the second fracture morphology. The step of determining the target scheme from multiple fracturing construction schemes based on the multiple fracture morphologies includes: The first uniformity corresponding to the first crack morphology and the second uniformity corresponding to the second crack morphology are determined respectively; If the difference between the first uniformity and the second uniformity does not exceed the uniformity threshold, the target construction sequence is determined according to the mechanical mechanism, wherein the target construction sequence is one of the construction sequences corresponding to the first scheme and the second scheme respectively; If the difference between the first uniformity and the second uniformity exceeds the uniformity threshold, the construction sequence corresponding to the crack morphology with the larger uniformity is determined as the target construction sequence. Based on the target construction sequence, the target scheme is determined from the plurality of fracturing construction schemes; The step of determining the target scheme from the plurality of fracturing schemes according to the target construction sequence includes: Based on the target construction sequence, the construction scheme that matches the target construction sequence among the multiple construction schemes is determined as multiple reference schemes, wherein the multiple reference schemes correspond to multiple different construction intensities; Construction simulation was performed on the target area under the multiple construction intensities to obtain multiple crack morphologies in the area. The target area includes the target platform and other platforms besides the target. Determine the construction sequence of the platforms included within the target area; According to the construction sequence of the area, construction simulations were performed on the target area under the multiple construction intensities to obtain the crack morphology of multiple areas. Based on the crack morphology of the multiple regions, the target construction intensity is determined from the multiple construction intensities; The scheme corresponding to the target construction intensity is determined from the plurality of reference schemes as the target scheme.

2. The method of claim 1, wherein, The determination of the target construction intensity from the multiple construction intensities based on the multiple regional crack morphologies includes: Multiple stress differences corresponding to the crack morphology in the multiple regions are determined respectively, wherein the stress difference is the difference between the maximum and minimum stress in the horizontal direction; The construction intensity corresponding to the smallest ground stress difference among the plurality of ground stress differences is selected as the target construction intensity.

3. The method of claim 1, wherein, Based on the wellbore data and geological parameters, multiple fracturing operation schemes are simulated to perform fracturing operations on the target platform, resulting in multiple fracture morphologies, including: Based on the wellbore data, a three-dimensional geometric model of multiple wellbores within the target platform is established; Based on the three-dimensional geometric model and the geological parameters, a three-dimensional dynamic simulation model is generated, wherein the three-dimensional dynamic simulation model is a dynamic simulation model used to simulate fracturing construction scenarios; The multiple construction parameters corresponding to the multiple fracturing construction schemes are respectively input into the three-dimensional dynamic simulation model to obtain the multiple fracture morphologies.

4. The method according to any one of claims 1 to 3, characterized in that, Also includes: Based on the target crack morphology corresponding to the target scheme, determine the length of each of the multiple cracks and the average length of the multiple cracks, wherein the target crack morphology includes the multiple cracks; A target crack is determined from the plurality of cracks by sequentially comparing the plurality of cracks with the average length, wherein the difference between the length of the target crack and the average length is greater than a length threshold. The fracturing intensity of the target fracture in the target scheme is adjusted to obtain the optimized scheme; According to the optimization scheme, multiple wells within the target platform are constructed.

5. A fracturing treatment plan determination apparatus, characterized by, To implement the method of claim 1, the method comprises: The acquisition module is used to acquire wellbore data and geological parameters, wherein the wellbore data is used to describe the trajectory of multiple wellbores within the target platform, and the geological parameters are used to describe the geological information of the target platform; The simulation module is used to simulate multiple fracturing construction schemes to carry out fracturing construction on the target platform based on the wellbore data and the geological parameters, and obtain multiple fracture morphologies. Each fracture morphology is used to describe the fracture morphology of multiple wellbores within the target platform. The determination module is used to determine the target scheme from the multiple fracturing construction schemes based on the multiple fracture morphologies and fracture morphology selection conditions.

6. A non-volatile storage medium, characterized by The non-volatile storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the non-volatile storage medium to perform the fracturing construction scheme determination method according to any one of claims 1 to 4.

7. A computer device, comprising: The computer device includes a processor for running a program, wherein the program executes the fracturing construction scheme determination method according to any one of claims 1 to 4.

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