Method and device for determining sweep range of hydraulic fracturing propping agent, equipment and storage medium

Abstract

The invention relates to a method and device for determining the sweep range of a hydraulic fracturing propping agent, equipment and a storage medium. The method comprises the steps that the perforation position, microseism event parameters and hydraulic fracturing parameters of a fractured well are obtained; determining a micro-seismic event distance according to the perforation position and the micro-seismic event parameters; according to the micro-seismic event parameters and the hydraulic fracturing parameters, supporting dosage corresponding to the micro-seismic event is matched; according to the microseism event distance and the support dosage corresponding to the microseism event, establishing a mapping relation between the event distance and the support dosage and a mapping relation between the proppant distance and the support dosage; based on the mapping relation, the index coefficient and the classification coefficient of the propping agent are determined, and the microseism event with the classification coefficient being a specified value is used for indicating the sweep range of the propping agent, so that the sweep range of the fracturing propping agent can be effectively determined, the explanation precision of effective reconstruction cracks is improved, and the fracturing effect is accurately evaluated; and data support is provided for subsequent fracturing scheme design optimization.

Description

Technical Field

[0001] The present disclosure relates to the technical field of geophysical interpretation in wells, and in particular to a method and device for determining the coverage of hydraulic fracturing proppant, equipment and storage medium. Background Art

[0002] Hydraulic fracturing is an effective means of reservoir transformation and plays an important role in improving the permeability of reservoirs. Fracturing uses a high-pressure pump on the ground to inject a fracturing fluid with high viscosity into the reservoir through the perforation position along the wellbore. When the injection pressure exceeds the fracture pressure of the reservoir rock, the reservoir rock will be squeezed open and cracks will be generated. In order to keep the cracks open, it is necessary to squeeze a sand-carrying fluid with proppants into the reservoir. After the sand-carrying fluid enters the cracks, on the one hand, it can make the cracks continue to extend forward, and on the other hand, it can support the cracks that have been opened. However, it is difficult to effectively evaluate the effective propped cracks formed by hydraulic fracturing.

[0003] Microseismic monitoring technology is a geophysical technology that monitors the impact, effect and underground status of production activities by observing and analyzing tiny earthquake events generated during production activities. When underground rocks break and move, a weak seismic wave is generated and propagates to the surrounding area. By arranging multiple sets of geophones in the space around the fracture zone and collecting microseismic data in real time, after data processing, the location of the fracture can be determined by using the vibration positioning principle and displayed in three-dimensional space. When the reservoir is in a static state, no microseismic signal is generated; when high-pressure liquid presses open the reservoir rock, the reservoir activity becomes intense and a strong microseismic signal is generated; with the injection of proppant, the cracks are propped open, the reservoir activity weakens, and the microseismic signal decreases.

[0004] The effective propped cracks formed during the fracturing process will affect the production of a single well. The direction, length and width of the fracturing cracks can not only verify the fracturing effect, explain the crack morphology, and analyze the oil discharge from the cracks, but also analyze the distribution direction of the main stress of the formation, which plays an important guiding role in shale gas development. At present, the research on the scope of fracturing propped cracks or proppants is mainly focused on the research of numerical simulation methods. There is no public literature or report on the application of microseismic monitoring technology to determine the scope of proppants, nor is there a detailed description and specific details on the application of microseismic monitoring technology to determine the scope of proppants. Summary of the invention

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the embodiments of the present disclosure provide a method and device, equipment and storage medium for determining the coverage of hydraulic fracturing proppant.

[0006] In a first aspect, an embodiment of the present disclosure provides a method for determining a hydraulic fracturing proppant coverage, the method comprising:

[0007] Obtain perforation locations, microseismic event parameters, and hydraulic fracturing parameters of the fracturing well;

[0008] Determine the microseismic event distance based on the perforation location and microseismic event parameters;

[0009] According to the microseismic event parameters and hydraulic fracturing parameters, the proppant dosage corresponding to the microseismic event is matched;

[0010] According to the microseismic event distance and the proppant dosage corresponding to the microseismic event, a mapping relationship between the event distance and the proppant distance and the proppant dosage is established;

[0011] Based on the mapping relationship between event distance and proppant distance and proppant dosage, the proppant index coefficient and classification coefficient are determined, and the microseismic events with the classification coefficient of the specified value are used to indicate the proppant sweep range.

[0012] In a possible implementation, the microseismic event parameters include the time and location of the microseismic event, and determining the microseismic event distance according to the perforation location and the microseismic event parameters includes:

[0013] The distance between the perforation position and the location where the microseismic event occurs is taken as the microseismic event distance.

[0014] In a possible implementation, the hydraulic fracturing parameters include fracturing time and proppant dosage injected for fracturing, and matching the proppant dosage corresponding to the microseismic event according to the microseismic event parameters and the hydraulic fracturing parameters includes:

[0015] Taking the occurrence time of microseismic events and fracturing time as matching objects, the interpolation method is used to calculate the proppant dosage corresponding to each microseismic event, and a fracturing microseismic data set is established, wherein the data set includes the time, the location of the microseismic event, the distance of the microseismic event, and the proppant dosage corresponding to the microseismic event.

[0016] In a possible implementation, establishing a mapping relationship between the event distance and the proppant distance and the proppant dosage respectively according to the microseismic event distance and the proppant dosage corresponding to the microseismic event includes:

[0017] Using the microseismic event distance in the fracturing microseismic data set and the proppant dose corresponding to the microseismic event, a mapping relationship between the event distance and the proppant dose is established;

[0018] Based on the mapping relationship between event distance and proppant dosage, a mapping relationship between proppant distance and proppant dosage is established.

[0019] In a possible implementation, the establishing a mapping relationship between the proppant distance and the proppant dosage based on the mapping relationship between the event distance and the proppant dosage includes:

[0020] With proppant dosage as the horizontal coordinate and event distance as the vertical coordinate, the preset horizontal coordinate length is used as equal intervals. The minimum value of the event distance in each interval is statistically calculated as the proppant distance. The midpoint of each interval is used as the horizontal coordinate and the proppant distance as the vertical coordinate to form a data pair. The mapping relationship between proppant distance and proppant dosage is established using the interpolation method.

[0021] In a possible implementation, the establishing a mapping relationship between the proppant distance and the proppant dosage based on the mapping relationship between the event distance and the proppant dosage includes:

[0022] With support dose as the horizontal axis and event distance as the vertical axis, a profile diagram of the relationship between event distance and support dose is drawn;

[0023] In the relationship profile diagram between event distance and proppant dosage, the minimum event distance under different proppant dosages is selected as the proppant distance of different proppant dosages to obtain the mapping relationship between the proppant distance and the proppant dosage.

[0024] In a possible implementation, the determining of the proppant index coefficient and the classification coefficient based on the mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, includes:

[0025] Based on the mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, determining the corresponding relationship between the event distance and the proppant distance;

[0026] According to the corresponding event distance and proppant distance, the distance from the event to the proppant boundary is calculated as the proppant index coefficient;

[0027] The proppant classification coefficient is determined based on the proppant index coefficient.

[0028] In one possible implementation, the distance from the event to the proppant boundary is calculated according to the corresponding event distance and proppant distance by the following expression:

[0029]

[0030] Among them, Findex is the distance from the event to the proppant boundary, Devent is the event distance, and Dsand is the proppant distance.

[0031] In one possible implementation, the proppant classification coefficient is determined according to the proppant index coefficient by the following expression:

[0032]

[0033] Among them, Sindex is the proppant classification coefficient, Findex is the distance from the event to the proppant boundary, and the value of α is not greater than 0.1.

[0034] In a possible implementation manner, the specified value is 1.

[0035] In a second aspect, an embodiment of the present disclosure provides a device for determining a hydraulic fracturing proppant coverage, comprising:

[0036] An acquisition module, used to acquire the perforation position, microseismic event parameters and hydraulic fracturing parameters of the fracturing well;

[0037] A first determination module is used to determine the microseismic event distance according to the perforation position and the microseismic event parameters;

[0038] A matching module, used for matching the proppant dosage corresponding to the microseismic event according to the microseismic event parameters and hydraulic fracturing parameters;

[0039] Establishing a module for establishing a mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, according to the microseismic event distance and the proppant dosage corresponding to the microseismic event;

[0040] The second determination module is used to determine the proppant index coefficient and the classification coefficient based on the mapping relationship between the event distance and the proppant distance and the proppant dosage respectively, and use the microseismic events with the classification coefficient as the specified value to indicate the proppant sweep range.

[0041] In a third aspect, an embodiment of the present disclosure provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0042] Memory, used to store computer programs;

[0043] The processor is used to implement the above-mentioned method for determining the hydraulic fracturing proppant coverage when executing the program stored in the memory.

[0044] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the above-mentioned method for determining the hydraulic fracturing proppant coverage.

[0045] The above technical solution provided by the embodiment of the present disclosure has at least some or all of the following advantages compared with the prior art:

[0046] The method for determining the hydraulic fracturing proppant coverage described in the embodiment of the present disclosure obtains the perforation position, microseismic event parameters and hydraulic fracturing parameters of the fracturing well; determines the microseismic event distance according to the perforation position and the microseismic event parameters; matches the proppant dosage corresponding to the microseismic event according to the microseismic event parameters and the hydraulic fracturing parameters; establishes a mapping relationship between the event distance and the proppant distance and the proppant dosage respectively according to the microseismic event distance and the proppant dosage corresponding to the microseismic event; determines the proppant index coefficient and the classification coefficient based on the mapping relationship between the event distance and the proppant distance and the proppant dosage respectively, and uses the microseismic event with a specified classification coefficient to indicate the proppant coverage, which can effectively determine the fracturing proppant coverage, improve the accuracy of effective fracture transformation interpretation, accurately evaluate the fracturing effect, and provide data support for subsequent fracturing scheme design optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0049] Figure 1 The flowchart of the method for determining the hydraulic fracturing proppant coverage according to the embodiment of the present disclosure is schematically shown;

[0050] Figure 2 A detailed flow chart of a method for determining a hydraulic fracturing proppant coverage according to an embodiment of the present disclosure is schematically shown;

[0051] Figure 3 A cross-sectional diagram schematically illustrates a mapping relationship between event distance and proppant dose according to an embodiment of the present disclosure;

[0052] Figure 4 A cross-sectional diagram schematically illustrates a mapping relationship between proppant distance and proppant dosage according to an embodiment of the present disclosure;

[0053] Figure 5 Schematically shows a top view of the proppant sweep range according to an embodiment of the present disclosure;

[0054] Figure 6 A structural block diagram schematically shows a device for determining the hydraulic fracturing proppant coverage according to an embodiment of the present disclosure; and

[0055] Figure 7 The structural block diagram of an electronic device according to an embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0057] See also Figure 1 , an embodiment of the present disclosure provides a method for determining the hydraulic fracturing proppant coverage, the method comprising:

[0058] S1, obtain the perforation position, microseismic event parameters and hydraulic fracturing parameters of the fracturing well.

[0059] In this embodiment, the microseismic event parameters include the event occurrence time Time and the event occurrence location (x, y, z), and the hydraulic fracturing parameters include the fracturing time fTime and the proppant dosage fStotal injected for fracturing.

[0060] S2, determining the microseismic event distance based on the perforation location and microseismic event parameters;

[0061] S3, matching the proppant dosage corresponding to the microseismic event according to the microseismic event parameters and hydraulic fracturing parameters;

[0062] S4, according to the microseismic event distance and the proppant dosage corresponding to the microseismic event, a mapping relationship between the event distance and the proppant distance and the proppant dosage is established respectively.

[0063] In this embodiment, the proppant distance is used to describe the proppant sweep distance centered on the perforation position as the proppant is added.

[0064] S5, based on the mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, determine the proppant index coefficient and the classification coefficient, and use the microseismic events with the classification coefficient as the specified value to indicate the proppant sweep range.

[0065] In this embodiment, in step S2, the microseismic event parameters include the time when the microseismic event occurred and the location where the microseismic event occurred, and determining the microseismic event distance according to the perforation location and the microseismic event parameters includes:

[0066] The distance between the perforation position and the location where the microseismic event occurs is taken as the microseismic event distance.

[0067] See also Figure 2 , the microseismic event distance is calculated according to the perforation position and the microseismic event, including: calculating the distance from each microseismic event to the perforation position, that is, the event distance Devent.

[0068] In this embodiment, in step S3, the hydraulic fracturing parameters include the fracturing time and the proppant dosage injected for fracturing, and the matching of the proppant dosage corresponding to the microseismic event according to the microseismic event parameters and the hydraulic fracturing parameters includes:

[0069] See also Figure 2 , taking the microseismic event occurrence time Time and the fracturing time fTime as matching objects, the interpolation method is used to calculate the proppant dosage Stotal corresponding to each microseismic event, and a fracturing microseismic data set is established, wherein the data set includes the time Time, the location of the microseismic event (x, y, z), the microseismic event distance Devent and the proppant dosage Stotal corresponding to the microseismic event.

[0070] In this embodiment, the microseismic event occurrence time Time and the fracturing time fTime are used as matching objects, and the proppant dosage Stotal corresponding to each microseismic event is calculated by using an interpolation method, including:

[0071] According to the fracturing time fTime and the fracturing proppant dosage fStotal, an interpolation function fit=f(fTime,fStotal) is established. According to the interpolation function fit, with the event time Time as the interpolation condition, the proppant dosage Stotal=fit(Time) corresponding to the microseismic event is interpolated.

[0072] In this embodiment, in step S4, the mapping relationship between the event distance and the proppant distance and the proppant dose is established according to the microseismic event distance and the proppant dose corresponding to the microseismic event, including:

[0073] Using the microseismic event distance in the fracturing microseismic data set and the proppant dose corresponding to the microseismic event, a mapping relationship between the event distance and the proppant dose Devent = F1 (Stotal) is established, that is, each microseismic event proppant dose Stotal corresponds to an event distance Devent, such as Figure 3 The mapping relationship between the event distance and the support dose is shown, the horizontal axis is the event support dose Stotal, the vertical axis is the event distance Devent, and the support dose and the event distance form a one-to-one correspondence;

[0074] Based on the mapping relationship between the event distance and the proppant dosage, a mapping relationship between the proppant distance and the proppant dosage Dsand=F2(Stotal) is established.

[0075] In this embodiment, the mapping relationship between the proppant distance and the proppant dosage is established based on the mapping relationship between the event distance and the proppant dosage, including:

[0076] With proppant dose as the horizontal coordinate and event distance as the vertical coordinate, and with the preset horizontal coordinate length ΔStotal as equal intervals, the minimum value of the event distance of each interval is statistically calculated as the proppant distance Dsand, the midpoint of each interval is used as the horizontal coordinate, and the proppant distance is used as the vertical coordinate to form a data pair (Stotal, Dsand), and the mapping relationship Dsand=f2(Stotal) between the proppant distance and the proppant dose is established by the interpolation method, so that each event proppant dose Stotal corresponds to a proppant distance Dsabd, wherein the interpolation method can be linear interpolation or polynomial interpolation, and there is no microseismic event in the area less than Dsand, the reservoir activity is weakened, and the proppant has been injected.

[0077] In this embodiment, the selection of the preset horizontal coordinate length may depend on the lateral change of the mapping relationship between the visual event distance and the support dosage. When the lateral change is faster, the preset horizontal coordinate length may be selected to be a smaller value. When the lateral change is slower, the preset horizontal coordinate length may be selected to be a larger value. The selection of the preset horizontal coordinate length needs to ensure that there are at least 3 pairs of values ​​of the proppant distance and the corresponding support dosage.

[0078] In another embodiment, the establishing a mapping relationship between the proppant distance and the proppant dosage based on the mapping relationship between the event distance and the proppant dosage includes:

[0079] With support dose as the horizontal axis and event distance as the vertical axis, a profile diagram of the relationship between event distance and support dose is drawn;

[0080] In the relationship profile diagram between event distance and proppant dose, the minimum event distance under different proppant doses is selected as the proppant distance of different proppant doses, and the mapping relationship between proppant distance and proppant dose Dsand=F2(Stotal) is obtained, so that each event proppant dose Stotal corresponds to a proppant distance Dsand.

[0081] Figure 4 The mapping relationship between proppant distance and proppant dosage is shown. Each interval ΔStotal is divided into 4 segments, and the minimum event distance point pairs are statistically calculated, represented by diamond points in the figure. Polynomial interpolation is applied to fit the 4 point pairs, and the minimum event distance boundary line, i.e., the proppant distance, is established, represented by a multi-segment line in the figure.

[0082] In this embodiment, in step S5, determining the proppant index coefficient and the classification coefficient based on the mapping relationship between the event distance and the proppant distance and the proppant dosage respectively includes:

[0083] Based on the mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, determining the corresponding relationship between the event distance and the proppant distance;

[0084] According to the corresponding event distance and proppant distance, the distance from the event to the proppant boundary is calculated as the proppant index coefficient;

[0085] The proppant classification coefficient is determined based on the proppant index coefficient.

[0086] In this embodiment, the distance from the event to the proppant boundary is calculated according to the corresponding event distance and proppant distance by the following expression:

[0087]

[0088] Among them, Findex is the distance from the event to the proppant boundary, Devent is the event distance, Dsand is the proppant distance, and the Findex value range is [-1, +1]. When Findex is close to 0, it indicates the proppant boundary.

[0089] In this embodiment, the proppant classification coefficient is determined according to the proppant index coefficient by the following expression:

[0090]

[0091] Wherein, Sindex is the proppant classification coefficient, Findex is the distance from the event to the proppant boundary, the value of α is not greater than 0.1, and a microseismic event with Sindex=1 indicates the affected range of the fracturing proppant. Therefore, the specified value may be 1.

[0092] like Figure 5 The top view of the proppant coverage is shown. The triangle marked positions are the perforation positions, and the larger points are the microseismic event points with α=0.1 and Sindex=1, indicating the planar coverage of the fracturing proppant.

[0093] The method for determining the hydraulic fracturing proppant coverage disclosed in the present invention uses drilling perforation data, fracturing data and fracturing microseismic monitoring data to construct a fracturing microseismic data set, uses the fracturing proppant dosage and the distance from the microseismic event to the perforation point to establish an event distance mapping relationship F1, uses the fracturing proppant dosage and the minimum distance from the microseismic event to the perforation point based on segmented statistics to establish a proppant distance mapping relationship F2, uses the event distance mapping relationship F1 and the proppant distance mapping relationship F2 to calculate the proppant indication coefficient Findex and the classification coefficient Sindex, and uses the microseismic event with the proppant classification coefficient Sindex=1 to determine the proppant coverage, thereby improving the accuracy of effective fracture reconstruction interpretation, accurately evaluating the fracturing effect, and providing data support for the subsequent optimization design of fracturing schemes.

[0094] The method for determining the hydraulic fracturing proppant wave range disclosed in the present invention combines fracturing parameters and fracturing microseismic events to calculate the fracturing proppant classification coefficient, and uses the classification coefficient to screen microseismic events. It can effectively determine the fracturing proppant wave distance and range, improve the accuracy of effective fracture transformation interpretation, accurately evaluate the fracturing effect, and provide data support for subsequent fracturing scheme design optimization.

[0095] See also Figure 6 , an embodiment of the present disclosure provides a device for determining a hydraulic fracturing proppant coverage, comprising:

[0096] An acquisition module 11 is used to acquire the perforation position, microseismic event parameters and hydraulic fracturing parameters of the fracturing well;

[0097] A first determination module 12, for determining a microseismic event distance according to a perforation position and microseismic event parameters;

[0098] A matching module 13, used to match the proppant dosage corresponding to the microseismic event according to the microseismic event parameters and the hydraulic fracturing parameters;

[0099] Establishing module 14, for establishing mapping relationships between event distance and proppant distance and proppant dosage respectively according to the microseismic event distance and the proppant dosage corresponding to the microseismic event;

[0100] The second determination module 15 is used to determine the proppant index coefficient and the classification coefficient based on the mapping relationship between the event distance and the proppant distance and the proppant dosage respectively, and use the microseismic events with the classification coefficient as the specified value to indicate the proppant sweep range.

[0101] The implementation process of the functions and effects of each unit in the above-mentioned device is specifically described in the implementation process of the corresponding steps in the above-mentioned method, and will not be repeated here.

[0102] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The device embodiment described above is only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of the present invention. Ordinary technicians in this field can understand and implement it without paying creative work.

[0103] In the above second embodiment, any multiple of the acquisition module 11, the first determination module 12, the matching module 13, the establishment module 14 and the second determination module 15 can be combined in one module for implementation, or any one of the modules can be split into multiple modules. Alternatively, at least part of the functions of one or more of these modules can be combined with at least part of the functions of other modules and implemented in one module. At least one of the acquisition module 11, the first determination module 12, the matching module 13, the establishment module 14 and the second determination module 15 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or by any one of the three implementation methods of software, hardware and firmware or by a proper combination of any of them. Alternatively, at least one of the acquisition module 11, the first determination module 12, the matching module 13, the establishment module 14 and the second determination module 15 can be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding function can be executed.

[0104] See also Figure 7 , an electronic device provided by an embodiment of the present disclosure includes a processor 1110, a communication interface 1120, a memory 1130 and a communication bus 1140, wherein the processor 1110, the communication interface 1120, and the memory 1130 communicate with each other through the communication bus 1140;

[0105] Memory 1130, used for storing computer programs;

[0106] The processor 1110 is used to implement the following method for determining the hydraulic fracturing proppant coverage when executing the program stored in the memory 1130:

[0107] Obtain perforation locations, microseismic event parameters, and hydraulic fracturing parameters of the fracturing well;

[0108] Determine the microseismic event distance based on the perforation location and microseismic event parameters;

[0109] According to the microseismic event parameters and hydraulic fracturing parameters, the proppant dosage corresponding to the microseismic event is matched;

[0110] According to the microseismic event distance and the proppant dosage corresponding to the microseismic event, a mapping relationship between the event distance and the proppant distance and the proppant dosage is established;

[0111] Based on the mapping relationship between event distance and proppant distance and proppant dosage, the proppant index coefficient and classification coefficient are determined, and the microseismic events with the classification coefficient of the specified value are used to indicate the proppant sweep range.

[0112] The communication bus 1140 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus 1140 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0113] The communication interface 1120 is used for communication between the above electronic device and other devices.

[0114] The memory 1130 may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory 1130 may also be at least one storage device located away from the processor 1110.

[0115] The above-mentioned processor 1110 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0116] The embodiment of the present disclosure further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for determining the hydraulic fracturing proppant coverage as described above is implemented.

[0117] The computer-readable storage medium may be included in the device / apparatus described in the above embodiment; or it may exist independently without being assembled into the device / apparatus. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method for determining the hydraulic fracturing proppant coverage according to the embodiment of the present disclosure is implemented.

[0118] According to an embodiment of the present disclosure, a computer-readable storage medium may be a non-volatile computer-readable storage medium, for example, may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0119] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0120] The foregoing is merely a specific embodiment of the present disclosure, which enables those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A method for determining the proppant coverage of hydraulic fracturing, characterized in that: The method comprises: Obtain perforation locations, microseismic event parameters, and hydraulic fracturing parameters of the fracturing well; Determine the microseismic event distance based on the perforation location and microseismic event parameters; According to the microseismic event parameters and hydraulic fracturing parameters, the proppant dosage corresponding to the microseismic event is matched; According to the microseismic event distance and the proppant dosage corresponding to the microseismic event, a mapping relationship between the event distance and the proppant distance and the proppant dosage is established; Based on the mapping relationship between event distance and proppant distance and proppant dosage, the proppant index coefficient and classification coefficient are determined, and the microseismic events with the classification coefficient of the specified value are used to indicate the proppant sweep range.

2. The method according to claim 1, characterized in that The microseismic event parameters include the time and location of the microseismic event. The determination of the microseismic event distance according to the perforation location and the microseismic event parameters includes: The distance between the perforation position and the location where the microseismic event occurs is taken as the microseismic event distance.

3. The method according to claim 2, characterized in that The hydraulic fracturing parameters include fracturing time and proppant dosage injected for fracturing. The matching of proppant dosage corresponding to the microseismic event according to the microseismic event parameters and the hydraulic fracturing parameters includes: Taking the occurrence time of microseismic events and fracturing time as matching objects, the interpolation method is used to calculate the proppant dosage corresponding to each microseismic event, and a fracturing microseismic data set is established, wherein the data set includes the time, the location of the microseismic event, the distance of the microseismic event, and the proppant dosage corresponding to the microseismic event.

4. The method according to claim 3, characterized in that The step of establishing a mapping relationship between the event distance and the proppant distance and the proppant dose, respectively, according to the microseismic event distance and the proppant dose corresponding to the microseismic event, comprises: Using the microseismic event distance in the fracturing microseismic data set and the proppant dose corresponding to the microseismic event, a mapping relationship between the event distance and the proppant dose is established; Based on the mapping relationship between event distance and proppant dosage, a mapping relationship between proppant distance and proppant dosage is established.

5. The method according to claim 4, characterized in that The step of establishing a mapping relationship between the proppant distance and the proppant dosage based on the mapping relationship between the event distance and the proppant dosage comprises: With proppant dosage as the horizontal coordinate and event distance as the vertical coordinate, the preset horizontal coordinate length is used as equal intervals. The minimum value of the event distance in each interval is statistically calculated as the proppant distance. The midpoint of each interval is used as the horizontal coordinate and the proppant distance as the vertical coordinate to form a data pair. The mapping relationship between proppant distance and proppant dosage is established using the interpolation method.

6. The method according to claim 4, characterized in that The step of establishing a mapping relationship between the proppant distance and the proppant dosage based on the mapping relationship between the event distance and the proppant dosage comprises: With support dose as the horizontal axis and event distance as the vertical axis, a profile diagram of the relationship between event distance and support dose is drawn; In the relationship profile diagram between event distance and proppant dosage, the minimum event distance under different proppant dosages is selected as the proppant distance of different proppant dosages to obtain the mapping relationship between the proppant distance and the proppant dosage.

7. The method according to claim 1, characterized in that The method of determining the proppant index coefficient and the classification coefficient based on the mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, comprises: Based on the mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, determining the corresponding relationship between the event distance and the proppant distance; According to the corresponding event distance and proppant distance, the distance from the event to the proppant boundary is calculated as the proppant index coefficient; The proppant classification coefficient is determined based on the proppant index coefficient.

8. The method according to claim 7, characterized in that The distance from the event to the proppant boundary is calculated from the corresponding event distance and proppant distance using the following expression: Among them, Findex is the distance from the event to the proppant boundary, Devent is the event distance, and Dsand is the proppant distance.

9. The method according to claim 7, characterized in that: The proppant classification factor is determined from the proppant index factor using the following expression: Among them, Sindex is the proppant classification coefficient, Findex is the distance from the event to the proppant boundary, and the value of α is not greater than 0.

1.

10. The method according to claim 9, characterized in that The specified value is 1.

11. A device for determining the hydraulic fracturing proppant coverage, characterized in that: include: An acquisition module, used to acquire the perforation position, microseismic event parameters and hydraulic fracturing parameters of the fracturing well; A first determination module is used to determine the microseismic event distance according to the perforation position and the microseismic event parameters; A matching module, used for matching the proppant dosage corresponding to the microseismic event according to the microseismic event parameters and hydraulic fracturing parameters; Establishing a module for establishing a mapping relationship between the event distance and the proppant distance and the proppant dosage, respectively, according to the microseismic event distance and the proppant dosage corresponding to the microseismic event; The second determination module is used to determine the proppant index coefficient and the classification coefficient based on the mapping relationship between the event distance and the proppant distance and the proppant dosage respectively, and use the microseismic events with the classification coefficient as the specified value to indicate the proppant sweep range.

12. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory, used to store computer programs; The processor is used to implement the method for determining the hydraulic fracturing proppant coverage as described in any one of claims 1 to 10 when executing the program stored in the memory.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for determining the hydraulic fracturing proppant coverage according to any one of claims 1 to 10 is implemented.

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