Well control geological reserve determination method and device, electronic equipment, storage medium and product

Abstract

The embodiment of the invention discloses a well control geological reserve determination method and device, electronic equipment, a storage medium and a product. The method comprises the steps that well bottom flowing pressure corresponding to each production time of each single well in an oil field in an oil field development stage is obtained; aiming at each single well in the oil field, determining a quasi-steady state characteristic section of the single well according to the well bottom flowing pressure of the single well corresponding to each production time in the oil field development stage; wherein the quasi-steady state characteristic section is a characteristic section in which the bottom hole flowing pressure linearly changes along with the production time; and determining the well control geological reserves of the oil field in the single well based on the quasi-steady state characteristic section. According to the scheme, the quasi-steady-state feature segment that the bottom hole flowing pressure linearly changes along with the production time can be recognized, the problem that data volume is large and difficult to analyze and typical data change feature segments are rapidly extracted can be solved, meanwhile, the influence of human subjective consciousness is removed, the accuracy, scientificity and efficiency of information analysis are improved, and the method is suitable for popularization and application. And the well control geological reserves of the single well are quickly calculated according to the quasi-steady-state characteristic sections.

Description

Technical Field

[0001] This application relates to the field of oil and gas reservoir development technology, and in particular to a method, apparatus, electronic equipment, storage medium and product for determining well-controlled geological reserves. Background Technology

[0002] In the dynamic research of oilfield development and production, reservoir researchers need to conduct reservoir engineering analysis on various actual production test data, mainly bottomhole flowing pressure and wellhead production, focusing on analyzing reservoir productivity changes, production decline patterns, and water cut increase characteristics. During actual research, as dynamic and static data become increasingly abundant, researchers' understanding of the reservoir deepens. However, when the reservoir distribution is relatively limited and after a long period of production, the wellhead and bottomhole flowing pressures continuously decrease, and the wellhead production also declines significantly. The entire reservoir exhibits a production state of no energy replenishment and continuous development utilizing the formation and fluid elastic energy depletion. At this point, it becomes crucial to quickly and accurately identify whether a quasi-stable flow characteristic segment has appeared on the actual production curve, and to calculate well-controlled geological reserves based on this segment. Summary of the Invention

[0003] This application provides a method, apparatus, electronic device, storage medium, and product for determining well-controlled geological reserves, which can automatically identify a quasi-steady-state characteristic segment in which the bottom-hole flow pressure changes linearly with production time, and quickly calculate the well-controlled geological reserves of a single well based on the quasi-steady-state characteristic segment.

[0004] According to one aspect of this application, a method for determining well-controlled geological reserves is provided, the method comprising:

[0005] The bottom flow pressure of each individual well in the oilfield is obtained at each production time during the oilfield development stage.

[0006] For each well in the oilfield, a quasi-steady-state characteristic segment is determined based on the bottom-hole flow pressure corresponding to each production time during the oilfield development phase; wherein, the quasi-steady-state characteristic segment is a segment in which the bottom-hole flow pressure changes linearly with the production time.

[0007] The well-controlled geological reserves of the oilfield in the single well are determined based on the quasi-steady-state characteristic segment.

[0008] Optionally, based on the bottomhole flowing pressure corresponding to each production time during the oilfield development phase, the pseudo-steady-state characteristic segment of the single well is determined, including:

[0009] Based on the bottom-hole flow pressure corresponding to each production time during the oilfield development phase of the single well, plot the relationship curve between the bottom-hole flow pressure and the production time.

[0010] Based on a genetic algorithm, a quasi-steady-state characteristic segment in which the bottom-hole flow pressure changes linearly with the production time is determined from the relationship curve.

[0011] Optionally, a quasi-steady-state characteristic segment in which the bottom-hole flow pressure changes linearly with production time is determined from the relationship curve based on a genetic algorithm, including:

[0012] Based on the genetic algorithm, starting from the end of the relationship curve, a search is performed towards the beginning of the relationship curve over a preset time span to determine the quasi-steady-state characteristic segment in the relationship curve where the bottom hole flow pressure changes linearly with the production time within the preset time span.

[0013] Optionally, before determining the quasi-steady-state characteristic segment of the single well based on the bottomhole flowing pressure corresponding to each production time during the oilfield development phase, the method further includes:

[0014] For the bottom hole flow pressure of the single well during each production time in the oilfield development stage, calculate the pressure change between the bottom hole flow pressure at the current production time and the bottom hole flow pressure at the previous production time.

[0015] When the pressure change exceeds a preset pressure range threshold, the bottom flow pressure corresponding to the current production time is removed.

[0016] Optionally, determining the well-controlled geological reserves of the oilfield in the single well based on the quasi-steady-state characteristic segment includes:

[0017] Regression fitting is performed on the bottom hole flow pressure corresponding to each production time within the pseudo-steady-state characteristic segment to generate a pseudo-steady-state fitting straight line.

[0018] The rate of change of the bottom hole flow pressure with the production time is determined based on the quasi-steady-state fitted straight line, and the well-controlled geological reserves of the oil field in the single well are determined based on the rate of change.

[0019] Optionally, before determining the well-controlled geological reserves of the oil field based on the rate of change in the single well, the method further includes:

[0020] Determine the overall compressibility, porosity, original oil saturation, and volume index of the oilfield at the single well location;

[0021] Determining the well-controlled geological reserves of the oil field in a single well based on the rate of change includes:

[0022] Based on the rate of change, the reservoir's overall compressibility coefficient, the porosity, the original oil saturation, and the volume coefficient, the well-controlled geological reserves of the oilfield in the single well are determined.

[0023] According to one aspect of this application, a well-controlled geological reserve determination device is provided, the device comprising:

[0024] The bottom hole flow pressure acquisition module is used to acquire the bottom hole flow pressure of each single well in the oilfield at each production time during the oilfield development stage.

[0025] The pseudo-steady-state characteristic segment determination module is used to determine the pseudo-steady-state characteristic segment of each well in the oilfield based on the bottom hole flow pressure corresponding to each production time during the oilfield development stage; wherein, the pseudo-steady-state characteristic segment is the segment in which the bottom hole flow pressure changes linearly with the production time.

[0026] The well-controlled geological reserves determination module is used to determine the well-controlled geological reserves of the oilfield in a single well based on the pseudo-steady-state characteristic segment.

[0027] According to another aspect of this application, an electronic device is provided, the electronic device comprising:

[0028] At least one processor; and

[0029] A memory that is communicatively connected to at least one processor; wherein,

[0030] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the well-controlled geological reserves determination method of any embodiment of this application.

[0031] According to another aspect of this application, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to execute and implement the well-controlled geological reserve determination method of any embodiment of this application.

[0032] According to another aspect of this application, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the well-controlled geological reserves determination method of any embodiment of this application.

[0033] The technical solution of this application embodiment obtains the bottom-hole flowing pressure of each single well in the oilfield at each production time during the oilfield development stage; for each single well in the oilfield, based on the bottom-hole flowing pressure at each production time during the oilfield development stage, the quasi-steady-state characteristic segment of the single well is determined; wherein, the quasi-steady-state characteristic segment is a characteristic segment in which the bottom-hole flowing pressure changes linearly with the production time; based on the quasi-steady-state characteristic segment, the well-controlled geological reserves of the oilfield in the single well are determined. Through the technical solution provided by this application embodiment, the quasi-steady-state characteristic segment in which the bottom-hole flowing pressure changes linearly with the production time can be automatically identified, which can better solve the problem of large data volumes making analysis difficult and quickly extract typical data change characteristic segments, while removing the influence of human subjective opinion, improving the accuracy, scientificity, and efficiency of information analysis, and quickly calculating the well-controlled geological reserves of a single well based on the quasi-steady-state characteristic segment.

[0034] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A flowchart illustrating a method for determining well-controlled geological reserves provided in this application embodiment;

[0037] Figure 2 A schematic diagram of a well-controlled geological reserve determination interface provided in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the interface for determining well-controlled geological reserves, provided in an embodiment of this application.

[0039] Figure 4 A schematic diagram of a well-controlled geological reserve determination device provided in this application embodiment;

[0040] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0042] It should be noted that the terms "first," "second," "third," "fourth," "actual," "preset," etc., used in the specification, claims, and accompanying drawings of this application 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 this application 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 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.

[0043] Figure 1 This document provides a flowchart of a method for determining well-controlled geological reserves, applicable to the calculation of well-controlled geological reserves in oil fields. The method can be executed by a well-controlled geological reserve determination device, which can be implemented in hardware and / or software and can be configured in an electronic device. Figure 1 As shown, the method includes:

[0044] S110. Obtain the bottom flow pressure of each single well in the oilfield at each production time during the oilfield development stage.

[0045] In this embodiment of the application, multiple development wells may be set up within the oilfield during the oilfield development process. Therefore, for each individual well within the oilfield, the bottom hole flow pressure corresponding to each production time during the oilfield development stage is obtained. It should be noted that this embodiment of the application does not limit the number of individual wells in the oilfield, nor does it limit the duration of the oilfield development stage.

[0046] S120. For each single well in the oilfield, based on the bottom hole flow pressure corresponding to each production time during the oilfield development stage, determine the quasi-steady-state characteristic segment of the single well; wherein, the quasi-steady-state characteristic segment is the characteristic segment in which the bottom hole flow pressure changes linearly with the production time.

[0047] In this embodiment of the application, for each single well in an oilfield, the bottom-hole flowing pressure corresponding to each production time during the oilfield development stage is analyzed to determine a quasi-steady-state characteristic segment in which the bottom-hole flowing pressure of the single well changes linearly with production time. It can be understood that the bottom-hole flowing pressure corresponding to each production time within the quasi-steady-state characteristic segment changes linearly with production time. Determining the quasi-steady-state characteristic segment of the single well based on the bottom-hole flowing pressure corresponding to each production time during the oilfield development stage includes: plotting a curve showing the relationship between the bottom-hole flowing pressure and the production time based on the bottom-hole flowing pressure corresponding to each production time during the oilfield development stage; and determining the quasi-steady-state characteristic segment in which the bottom-hole flowing pressure changes linearly with production time from the curve using a genetic algorithm. For example, a coordinate system is constructed with production time as the abscissa and bottom-hole flowing pressure as the ordinate, and a curve showing the relationship between the bottom-hole flowing pressure and the production time is plotted in the coordinate system based on the bottom-hole flowing pressure corresponding to each production time during the oilfield development stage. The relationship curve between bottom hole flow pressure and production time was analyzed based on a genetic algorithm, and the quasi-steady-state characteristic segment in which the bottom hole flow pressure changes linearly with production time was determined from the relationship curve.

[0048] Optionally, determining the quasi-steady-state characteristic segment from the relationship curve where the bottom hole flow pressure changes linearly with the production time based on a genetic algorithm includes: using the end endpoint of the relationship curve as the starting point, searching towards the beginning endpoint of the relationship curve over a preset time span based on a genetic algorithm, and determining the quasi-steady-state characteristic segment from the relationship curve where the bottom hole flow pressure changes linearly with the production time within the preset time span. For example, the starting and ending points of the curve relating bottom-hole flowing pressure to production time are determined. Based on a genetic algorithm, starting from the ending point, a reverse search is performed towards the starting point of the curve over a preset time span. It is determined whether the bottom-hole flowing pressure changes linearly with production time within the preset time span. If so, the curve segment within the preset time span is taken as a quasi-steady-state characteristic segment. Otherwise, the starting point is moved towards the starting point of the curve by a preset step size (e.g., a unit of production time), and the reverse search is performed again over the preset time span. This process is repeated until a quasi-steady-state characteristic segment is identified from the curve where the bottom-hole flowing pressure changes linearly with production time within the preset time span. Weeks or months can be used as the basic time span unit, and the genetic algorithm can automatically search for quasi-steady-state characteristic segments in the curve where the bottom-hole flowing pressure changes linearly with production time over different preset time spans. A longer preset time span indicates a more stable quasi-steady-state characteristic segment.

[0049] Optionally, before determining the quasi-steady-state characteristic segment of a single well based on the bottom-hole flowing pressure corresponding to each production time during the oilfield development stage, the method further includes: calculating the pressure change amplitude between the bottom-hole flowing pressure corresponding to the current production time and the bottom-hole flowing pressure corresponding to the previous production time for each production time during the oilfield development stage; when the pressure change amplitude is greater than a preset pressure amplitude threshold, the bottom-hole flowing pressure corresponding to the current production time is removed. Some oilfields have long production histories and large datasets, and due to various abnormal operations and temporary shutdowns at the oilfield operation site, there are often many abnormalities in the obtained bottom-hole flowing pressure. Therefore, for each production time during the oilfield development stage, the method calculates the pressure change amplitude between the bottom-hole flowing pressure corresponding to the current production time and the bottom-hole flowing pressure corresponding to the previous production time, determines whether the pressure change amplitude is greater than a preset pressure amplitude threshold, and if so, determines the bottom-hole flowing pressure corresponding to the current production time as an abnormal jump point and removes the bottom-hole flowing pressure corresponding to the current production time (i.e., the abnormal jump point). Optionally, abnormal jump points can be identified and removed manually. Understandably, after removing abnormal jump points in the bottomhole flowing pressure corresponding to each production time during the oilfield development phase, the relationship curve between bottomhole flowing pressure and production time can be plotted.

[0050] S130. Determine the well-controlled geological reserves of the oilfield in the single well based on the pseudo-steady-state characteristic segment.

[0051] In this embodiment, since the quasi-steady-state characteristic segment can accurately reflect the change of bottom hole flowing pressure with production time, the well-controlled geological reserves of an oilfield in a single well are determined based on the bottom hole flowing pressure corresponding to each production time included in the quasi-steady-state characteristic segment. For example, taking the overall data of all single wells in the oilfield as the analysis object, the main influencing factors of oilfield production changes are determined by observing the correlation between production indicators such as wellhead oil production, water production, fluid production, water cut, gas-oil ratio, cumulative oil production, cumulative water production, wellhead pressure, and bottom hole flowing pressure, and a ranking table of various influencing factors is established. The well-controlled geological reserves of an oilfield in a single well are determined based on the ranking table of various influencing factors and the bottom hole flowing pressure corresponding to each production time included in the quasi-steady-state characteristic segment. For example, the ranking table of various influencing factors and the bottom hole flowing pressure corresponding to each production time included in the quasi-steady-state characteristic segment can be input into a pre-trained well-controlled geological reserve determination model, and the well-controlled geological reserves of an oilfield in a single well can be determined based on the output of the well-controlled geological reserve determination model.

[0052] Optionally, determining the well-controlled geological reserves of the oilfield in a single well based on the quasi-steady-state characteristic segment includes: performing regression fitting on the bottom-hole flowing pressure corresponding to each production time included in the quasi-steady-state characteristic segment to generate a quasi-steady-state fitting line; determining the rate of change of the bottom-hole flowing pressure with the production time based on the quasi-steady-state fitting line; and determining the well-controlled geological reserves of the oilfield in the single well based on the rate of change. For example, regression fitting is performed on the bottom-hole flowing pressure corresponding to each production time included in the quasi-steady-state characteristic segment to generate a quasi-steady-state fitting line, and the slope of the quasi-steady-state fitting line is determined. The slope of the quasi-steady-state fitting line is used as the rate of change of the bottom-hole flowing pressure with the production time, and then the well-controlled geological reserves of the oilfield in the single well are determined based on the rate of change of the bottom-hole flowing pressure with the production time.

[0053] Optionally, before determining the well-controlled geological reserves of the oilfield in the single well based on the rate of change, the method further includes: determining the comprehensive reservoir compressibility, porosity, initial oil saturation, and volume coefficient of the oilfield at the single well; determining the well-controlled geological reserves of the oilfield in the single well based on the rate of change includes: determining the well-controlled geological reserves of the oilfield in the single well based on the rate of change, the comprehensive reservoir compressibility, the porosity, the initial oil saturation, and the volume coefficient. For example, the comprehensive reservoir compressibility, porosity, initial oil saturation, and volume coefficient of the oilfield at the single well are determined, and then the rate of change of bottomhole flowing pressure with production time, the comprehensive reservoir compressibility, porosity, initial oil saturation, and volume coefficient of the oilfield at the single well are input into a pre-trained well-controlled geological reserve determination model to obtain the well-controlled geological reserves of the single well output by the well-controlled geological reserve determination model.

[0054] Since calculating well-controlled geological reserves is only meaningful under closed boundary conditions, analytical methods for planar radial flow, half-planar radial flow, and quarter-planar radial flow cannot be used to calculate well-controlled geological reserves. Under closed boundary conditions, after a production well in an oilfield has been producing for a period of time, the influence of all impermeable boundaries around the production well affects the bottomhole flow pressure. At this point, the pressure drop funnel has affected the entire reservoir space. If production remains stable, the pressure change in the reservoir over time will remain constant, and the curve shape of the pressure drop funnel will remain unchanged and continue to shift downwards over time. That is, the reservoir is in a quasi-steady flow state of stable depletion, which can be obtained as follows: ,in, Indicates the bottom hole flow pressure. Indicates production time. Indicates the reservoir pore volume. Indicates output, Indicates the combined compressibility coefficient of rock and fluid. This represents the formation crude oil volume factor. Since the bottom hole flowing pressure is in the pseudo-steady-state fitted straight line... With production time The pore volume changes linearly, therefore the reservoir pore volume can be calculated using the above formula. Then, the geological reserves of the reservoir can be calculated based on the original oil saturation and crude oil volume factor. For example, the mapping relationship between the geological reserves of the reservoir and the original oil saturation and crude oil volume factor can be obtained, and the geological reserves of the reservoir can be calculated based on the original oil saturation, crude oil volume factor and the above mapping relationship.

[0055] For example, Figure 2 This is a schematic diagram of a well-controlled geological reserve determination interface provided in an embodiment of this application. Figure 3 This is a schematic diagram of the interface for determining well-controlled geological reserves, provided in an embodiment of this application.

[0056] The technical solution of this application embodiment obtains the bottom-hole flowing pressure of each single well in the oilfield at each production time during the oilfield development stage; for each single well in the oilfield, based on the bottom-hole flowing pressure at each production time during the oilfield development stage, the quasi-steady-state characteristic segment of the single well is determined; wherein, the quasi-steady-state characteristic segment is a characteristic segment in which the bottom-hole flowing pressure changes linearly with the production time; based on the quasi-steady-state characteristic segment, the well-controlled geological reserves of the oilfield in the single well are determined. Through the technical solution provided by this application embodiment, the quasi-steady-state characteristic segment in which the bottom-hole flowing pressure changes linearly with the production time can be automatically identified, which can better solve the problem of large data volumes making analysis difficult and quickly extract typical data change characteristic segments, while removing the influence of human subjective opinion, improving the accuracy, scientificity, and efficiency of information analysis, and quickly calculating the well-controlled geological reserves of a single well based on the quasi-steady-state characteristic segment.

[0057] Figure 4 This is a schematic diagram of a well-controlled geological reserve determination device provided in an embodiment of this application. This device can execute the well-controlled geological reserve determination method provided in any embodiment of this application, and possesses the corresponding functional modules and beneficial effects of the method. Figure 4 As shown, the device includes:

[0058] The bottom-hole flow pressure acquisition module 410 is used to acquire the bottom-hole flow pressure of each single well in the oilfield at each production time during the oilfield development stage.

[0059] The pseudo-steady-state characteristic segment determination module 420 is used to determine the pseudo-steady-state characteristic segment of each well in the oilfield based on the bottom hole flow pressure corresponding to each production time during the oilfield development stage; wherein, the pseudo-steady-state characteristic segment is a characteristic segment in which the bottom hole flow pressure changes linearly with the production time.

[0060] The well-controlled geological reserves determination module 430 is used to determine the well-controlled geological reserves of the oilfield in a single well based on the pseudo-steady-state characteristic segment.

[0061] Optional, the quasi-steady-state characteristic segment determination module includes:

[0062] The relationship curve plotting unit is used to plot the relationship curve between the bottom hole flow pressure and the production time based on the bottom hole flow pressure corresponding to each production time during the oilfield development stage of the single well.

[0063] The pseudo-steady-state characteristic segment determination unit is used to determine, based on a genetic algorithm, the pseudo-steady-state characteristic segment from the relationship curve in which the bottom hole flow pressure changes linearly with the production time.

[0064] Optionally, a quasi-steady-state characteristic segment determination unit is used for:

[0065] Based on the genetic algorithm, starting from the end of the relationship curve, a search is performed towards the beginning of the relationship curve over a preset time span to determine the quasi-steady-state characteristic segment in the relationship curve where the bottom hole flow pressure changes linearly with the production time within the preset time span.

[0066] Optional, also includes:

[0067] The pressure change amplitude calculation module is used to calculate the pressure change amplitude between the bottom flow pressure corresponding to the current production time and the bottom flow pressure corresponding to the previous production time for each production time of the single well during the oilfield development stage, before determining the pseudo-steady-state characteristic segment of the single well based on the bottom flow pressure corresponding to each production time of the single well during the oilfield development stage.

[0068] The bottom-hole flow pressure rejection module is used to reject the bottom-hole flow pressure corresponding to the current production time when the pressure change amplitude is greater than a preset pressure amplitude threshold.

[0069] Optional well-controlled geological reserve determination module, including:

[0070] The pseudo-steady-state fitting line generation unit is used to perform regression fitting on the bottom hole flow pressure corresponding to each production time included in the pseudo-steady-state feature segment to generate a pseudo-steady-state fitting line.

[0071] The well-controlled geological reserves determination unit is used to determine the rate of change of the bottom hole flow pressure with the production time based on the pseudo-steady-state fitted straight line, and to determine the well-controlled geological reserves of the oil field in the single well based on the rate of change.

[0072] Optional, also includes:

[0073] The relevant information determination module is used to determine the comprehensive compressibility, porosity, original oil saturation and volume factor of the oilfield at the single well before determining the well-controlled geological reserves of the oilfield based on the rate of change.

[0074] Well-controlled geological reserve determination unit, used for:

[0075] Based on the rate of change, the reservoir's overall compressibility coefficient, the porosity, the original oil saturation, and the volume coefficient, the well-controlled geological reserves of the oilfield in the single well are determined.

[0076] The well-controlled geological reserve determination device provided in this application embodiment can execute the well-controlled geological reserve determination method provided in any embodiment of this application, and has the corresponding functional modules and beneficial effects of the execution method.

[0077] Figure 5 A schematic diagram of an electronic device 10, which can be used to implement embodiments of this application, is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the application described and / or claimed herein.

[0078] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0079] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of monitors, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0080] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as well-controlled geological reserve determination methods.

[0081] In some embodiments, the well-controlled geological reserve determination method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the well-controlled geological reserve determination method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the well-controlled geological reserve determination method by any other suitable means (e.g., by means of firmware).

[0082] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0083] Computer programs used to implement the methods of this application may be written in any combination of one or more programming languages. These computer programs may be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable well-controlled geological reserve determination device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0084] In the context of this application, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0085] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0086] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0087] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0088] This invention also provides a computer program product, including a computer program that, when executed by a processor, implements the well-controlled geological reserves determination method provided in any embodiment of this application.

[0089] In implementing the computer program product, computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0090] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired information of the technical solution of this application can be achieved, and this is not limited herein.

[0091] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method of well control reserve determination, the method comprising: The method comprises: Respectively acquiring the bottom hole flowing pressure corresponding to each production time in the oilfield development stage of each single well in the oilfield; For each single well in the oilfield, according to the bottom hole flowing pressure corresponding to each production time in the oilfield development stage of the single well, the quasi-steady characteristic section of the single well is determined; wherein the quasi-steady characteristic section is the characteristic section that the bottom hole flowing pressure changes linearly with the production time; Based on the quasi-steady characteristic section, the well-controlled geological reserves of the oilfield at the single well are determined.

2. The method of claim 1, wherein, According to the bottom hole flowing pressure corresponding to each production time in the oilfield development stage of the single well, the quasi-steady characteristic section of the single well is determined, comprising: According to the bottom hole flowing pressure corresponding to each production time in the oilfield development stage of the single well, the relationship curve between the bottom hole flowing pressure and the production time is drawn; Based on the genetic algorithm, the quasi-steady characteristic section that the bottom hole flowing pressure changes linearly with the production time is determined from the relationship curve.

3. The method of claim 2, wherein, Based on the genetic algorithm, the quasi-steady characteristic section that the bottom hole flowing pressure changes linearly with the production time is determined from the relationship curve, comprising: Based on the genetic algorithm, the end point of the relationship curve is taken as the starting point, and the search is performed in the direction of the starting point of the relationship curve with a preset time span, so as to determine the quasi-steady characteristic section that the bottom hole flowing pressure changes linearly with the production time within the preset time span from the relationship curve.

4. The method of claim 1, wherein, Before determining the quasi-steady characteristic section of the single well according to the bottom hole flowing pressure corresponding to each production time in the oilfield development stage of the single well, it further comprises: For the bottom hole flowing pressure corresponding to each production time in the oilfield development stage of the single well, the pressure change amplitude between the bottom hole flowing pressure corresponding to the current production time and the bottom hole flowing pressure corresponding to the last production time is calculated; When the pressure change amplitude is greater than a preset pressure amplitude threshold, the bottom hole flowing pressure corresponding to the current production time is excluded.

5. The method of claim 1, wherein, Based on the quasi-steady characteristic section, the well-controlled geological reserves of the oilfield at the single well are determined, comprising: The bottom hole flowing pressure corresponding to each production time contained in the quasi-steady characteristic section is regressed and fitted to generate a quasi-steady fitting straight line; According to the quasi-steady fitting straight line, the change rate of the bottom hole flowing pressure with the production time is determined, and based on the change rate, the well-controlled geological reserves of the oilfield at the single well are determined.

6. The method of claim 5, wherein, Before determining the well-controlled geological reserves of the oilfield at the single well based on the change rate, it further comprises: Determine the oil reservoir comprehensive compression coefficient, porosity, original oil saturation and volume coefficient of the oilfield at the single well; Based on the change rate, the well-controlled geological reserves of the oilfield at the single well are determined, comprising: Based on the change rate, the oil reservoir comprehensive compression coefficient, the porosity, the original oil saturation and the volume coefficient, the well-controlled geological reserves of the oilfield at the single well are determined.

7. A well control reserve determination apparatus characterized by, Comprise: The bottom hole flowing pressure acquisition module is used for respectively acquiring the bottom hole flowing pressure corresponding to each production time in the oilfield development stage of each single well in the oilfield; The quasi-steady-state characteristic segment determination module is configured to determine, for each single well in the oilfield, a quasi-steady-state characteristic segment of the single well according to a bottom-hole flowing pressure corresponding to each production time of the single well in the oilfield development stage, wherein the quasi-steady-state characteristic segment is a characteristic segment in which the bottom-hole flowing pressure changes linearly with the production time. The well-control geological reserve determination module is configured to determine, based on the quasi-steady-state characteristic segment, a well-control geological reserve of the oilfield at the single well.

8. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the well-control geological reserve determination method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to execute the well-control geological reserve determination method according to any one of claims 1-6 when executed.

10. A computer program product, characterised in that, The computer program product comprises a computer program, and the computer program, when executed by the processor, implements the well-control geological reserve determination method according to any one of claims 1-6. The computer program product comprises a computer program, and the computer program, when executed by the processor, implements the well-control geological reserve determination method according to any one of claims 1-6.

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