Oil reservoir oil displacement method and device, electronic equipment and storage medium

Abstract

The invention discloses an oil reservoir oil displacement method and device, electronic equipment and a storage medium. The method comprises the steps that a high-pressure pump set is started, and water injected into a water container is conveyed into an injection well; an alternating current power supply is turned on, ultrasonic waves with the preset frequency are applied to an oil layer in the injection well through an ultrasonic generator, a transmission cable and an electroacoustic transducer, and ultrasonic oil displacement is carried out; starting a high-voltage pulse power supply, and performing pulse liquid phase discharge oil displacement on an oil layer in the injection well through preset discharge voltage, preset discharge frequency and preset pulse width; and crude oil in the oil layer is exploited, and the crude oil recovery rate is determined. According to the technical scheme, the oil displacement process is synergistically enhanced through the ultrasonic wave and pulse liquid phase discharge coupling effect, and the recovery rate of crude oil can be remarkably increased.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield development, and in particular to an oil layer displacement method, device, electronic equipment and storage medium. Background Art

[0002] Ultrasonic energy converted from electrical energy produces mechanical vibration, cavitation, thermal, and acoustic streaming effects on the oil layer, altering the mechanical properties of the porous medium and disrupting the original equilibrium of the reservoir, thereby increasing reservoir permeability. This also causes cracking, thermal, and cavitation effects on crude oil in the reservoir, improving its fluidity and effectively increasing its production and recovery rate. Pulsed liquid phase discharge is a high-voltage, high-current pulse discharge process in a liquid medium. The high-speed energy conversion produces physical effects such as heat, light, force, and sound. Due to its environmental friendliness, significant production-increasing effects, and low cost, it has become a research hotspot in the field of oil and gas blockage relief and production increase.

[0003] However, although both ultrasound and pulsed liquid discharge can improve oil recovery, there is still no oil recovery technology that couples ultrasound and pulsed liquid discharge. Summary of the Invention

[0004] The present invention provides an oil layer flooding method, device, electronic equipment and storage medium, which synergistically enhance the oil flooding process by coupling ultrasound with pulsed liquid phase discharge, and can significantly improve the recovery rate of crude oil.

[0005] According to one aspect of the present invention, there is provided a method for flooding an oil layer, the method comprising:

[0006] Turn on the high-pressure pump group to transport the water in the injection water container to the injection well;

[0007] Turn on the AC power supply, and apply ultrasonic waves of a preset frequency to the oil layer in the injection well through the ultrasonic generator, transmission cable and electroacoustic transducer to perform ultrasonic flooding;

[0008] Turn on the high-voltage pulse power supply and perform pulse liquid phase discharge oil displacement on the oil layer in the injection well by using a preset discharge voltage, a preset discharge frequency and a preset pulse width;

[0009] Exploit the crude oil in the oil layer and determine the crude oil recovery rate.

[0010] According to another aspect of the present invention, there is provided an oil layer displacement device, the device comprising:

[0011] A water delivery module is used to start the high-pressure pump group to deliver the water injected into the water container to the injection well;

[0012] The ultrasonic flooding module is used to turn on the AC power supply and apply ultrasonic waves of a preset frequency to the oil layer in the injection well through the ultrasonic generator, transmission cable and electroacoustic transducer to perform ultrasonic flooding;

[0013] The pulse liquid phase discharge oil recovery module is used to turn on the high-voltage pulse power supply and perform pulse liquid phase discharge oil recovery on the oil layer in the injection well through a preset discharge voltage, preset discharge frequency and preset pulse width;

[0014] The crude oil recovery rate determination module is used to extract crude oil from the oil layer and determine the crude oil recovery rate.

[0015] According to another aspect of the present invention, an electronic device is provided, comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute an oil layer recovery method according to any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement an oil layer displacement method according to any embodiment of the present invention when executed.

[0020] The technical solution of an embodiment of the present invention involves activating a high-pressure pump assembly to transport water from an injection water container to an injection well, then activating an AC power supply to apply ultrasonic waves of a preset frequency to the oil layer in the injection well via an ultrasonic generator, transmission cable, and electroacoustic transducer to perform ultrasonic flooding. Furthermore, activating a high-voltage pulse power supply to perform pulsed liquid-phase discharge flooding on the oil layer in the injection well at a preset discharge voltage, preset discharge frequency, and preset pulse width, then extracting crude oil from the oil layer to determine the crude oil recovery rate. This technical solution synergistically enhances the oil recovery process by coupling ultrasonic waves with pulsed liquid-phase discharge, significantly improving crude oil recovery.

[0021] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a flow chart of an oil layer flooding method provided according to the first embodiment of the present invention;

[0024] Figure 2 This is a schematic structural diagram of an oil layer displacement device provided according to a second embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of an electronic device for implementing an oil layer displacement method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] Example 1

[0029] Figure 1This is a flow chart of an oil layer flooding method provided according to the first embodiment of the present invention. This embodiment is applicable to the case where the coupling effect of ultrasound and pulsed liquid phase discharge is used to synergistically enhance the flooding process. The method can be performed by an oil layer flooding device. The oil layer flooding device can be implemented in the form of hardware and / or software. The oil layer flooding device can be configured in a device. For example, the device can be a background server or other device with communication and computing capabilities. Figure 1 As shown, the method includes:

[0030] S110, start the high-pressure pump group to transport the water in the injection water container to the injection well.

[0031] In this solution, an ultrasonic and pulsed liquid discharge synergistically enhanced oil recovery system includes: an injection water container, a high-pressure pump unit, an AC power supply, an ultrasonic generator, a transmission cable, an electroacoustic transducer, and a high-voltage pulsed power supply. This ultrasonic and pulsed liquid discharge synergistically enhanced oil recovery system performs a reservoir recovery method.

[0032] Among them, a high-pressure pump is a device that provides high-pressure power for conveying fluids; a water injection container refers to a container for holding water; an AC power supply is a load power supply used for testing purposes, which can change voltage and frequency, and has two types: stabilized AC power and unregulated AC power; an ultrasonic generator is a device for generating ultrasonic energy; a transmission cable can refer to a cable for transmitting ultrasonic waves; an electroacoustic transducer refers to a device that converts electrical energy into acoustic energy; a high-voltage pulse power supply is a type of high-voltage power supply, which is a high-voltage power supply that adds a switching circuit to a high-voltage DC power supply, thereby outputting an adjustable pulse amplitude, adjustable pulse width, adjustable pulse frequency, and a set number of pulse outputs.

[0033] Specifically, the water in the injection water container can be transported to the injection well by turning on the high-pressure pump group in the oil displacement system that is synergistically enhanced by ultrasound and pulsed liquid phase discharge.

[0034] S120, turning on the AC power supply, applying ultrasonic waves of a preset frequency to the oil layer in the injection well through the ultrasonic generator, the transmission cable and the electroacoustic transducer, and performing ultrasonic flooding.

[0035] In this solution, the ultrasonic generator, transmission cable, and electroacoustic transducer in the oil recovery system, which synergistically enhances ultrasonic waves with pulsed liquid discharge, can exert ultrasonic energy. The ultrasonic energy converted from electrical energy exerts mechanical vibration, cavitation, thermal, and acoustic streaming effects on the oil layer, altering the mechanical properties of the porous medium and disrupting the reservoir's original equilibrium, thereby increasing reservoir permeability. It also causes cracking, thermal, and cavitation effects on the crude oil in the reservoir, improving its fluidity and effectively increasing crude oil production and recovery. Whether increasing production in new wells or tapping the potential of existing wells, ultrasonic stimulation technology can achieve ideal oil production results, with the advantages of low operating costs, simple construction, long-term effectiveness, and environmental friendliness.

[0036] Specifically, ultrasonic oil recovery can be carried out by turning on the AC power supply in the oil recovery system that is synergistically enhanced by ultrasound and pulsed liquid discharge, and applying ultrasonic waves of a preset frequency to the oil layer in the injection well through an ultrasonic generator, a transmission cable and an electroacoustic transducer.

[0037] In this embodiment, the preset frequency of the ultrasonic wave is between 20 KHz and 60 KHz, and the frequency is preferably set to 30 KHz (kilohertz).

[0038] S130 , turning on the high-voltage pulse power supply, and performing pulse liquid phase discharge oil displacement on the oil layer in the injection well by using a preset discharge voltage, a preset discharge frequency, and a preset pulse width.

[0039] In this embodiment, the high-voltage pulse power supply in the ultrasonic and pulsed liquid phase discharge synergistically enhanced oil recovery system can perform pulsed liquid phase discharge recovery on the oil layer in the injection well. Pulsed liquid phase discharge is a high-voltage, high-current pulsed discharge process in a liquid medium. The high-speed energy conversion produces physical effects such as heat, light, force, and sound, as well as chemical reactions. It has the advantages of being environmentally friendly, significantly increasing production, and being low-cost.

[0040] Specifically, by turning on the high-voltage pulse power supply in the oil recovery system that is synergistically enhanced by ultrasound and pulsed liquid discharge, the oil layer in the injection well can be subjected to pulsed liquid discharge oil recovery with a preset discharge voltage, preset discharge frequency and preset pulse width.

[0041] Among them, the preset discharge voltage is between 2kV and 40kV, and the discharge voltage is preferably set to 20kV (kilovolts); the preset discharge frequency is between 100Hz and 2000Hz, and the discharge frequency is preferably set to 200Hz (hertz); the preset pulse width is between 50ns and 500ns, and the pulse width is preferably set to 200ns (nanoseconds).

[0042] Furthermore, ultrasonic flooding and pulsed liquid discharge flooding can be performed simultaneously, intermittently or alternately, preferably simultaneously.

[0043] S140. Exploit the crude oil in the oil layer and determine the crude oil recovery rate.

[0044] In this solution, ultrasonic waves are coupled with pulsed liquid discharge to synergistically enhance the oil recovery process, allowing crude oil to be extracted from the reservoir and the oil recovery factor to be calculated. Using this solution's oil recovery technology can increase oil recovery by more than 6 percentage points.

[0045] Specifically, various oil layer production technologies may be used to produce crude oil in the oil layer.

[0046] The technical solution of the embodiment of the present invention is to start the high-pressure pump group to transport water from the injection water container to the injection well, turn on the AC power supply, apply ultrasonic waves of a preset frequency to the oil layer in the injection well through an ultrasonic generator, a transmission cable, and an electroacoustic transducer to perform ultrasonic oil recovery, and turn on the high-voltage pulse power supply to perform pulsed liquid phase discharge oil recovery on the oil layer in the injection well at a preset discharge voltage, preset discharge frequency, and preset pulse width. The crude oil in the oil layer is then mined to determine the crude oil recovery rate. By implementing this technical solution, the coupling effect of ultrasonic waves and pulsed liquid phase discharge is synergistically enhanced to the oil recovery process, which can significantly improve the crude oil recovery rate.

[0047] Example 2

[0048] Figure 2 It is a structural schematic diagram of an oil layer displacement device provided according to the second embodiment of the present invention.

[0049] like Figure 2 As shown, the device includes:

[0050] The water delivery module 210 is used to start the high-pressure pump group to deliver the water injected into the water container to the injection well;

[0051] The ultrasonic flooding module 220 is used to turn on the AC power supply and apply ultrasonic waves of a preset frequency to the oil layer in the injection well through the ultrasonic generator, transmission cable and electroacoustic transducer to perform ultrasonic flooding;

[0052] The pulsed liquid phase discharge flooding module 230 is used to turn on the high voltage pulse power supply and perform pulsed liquid phase discharge flooding on the oil layer in the injection well by using a preset discharge voltage, a preset discharge frequency and a preset pulse width;

[0053] The crude oil recovery factor determination module 240 is used to extract crude oil from the oil layer and determine the crude oil recovery factor.

[0054] Optionally, the oil displacement process of the ultrasonic oil displacement and the pulsed liquid discharge oil displacement includes simultaneous oil displacement, intermittent oil displacement or alternating oil displacement.

[0055] Optionally, the preset frequency ranges from 20 KHz to 60 KHz.

[0056] Optionally, the preset discharge voltage ranges from 2 kV to 40 kV; the preset discharge frequency ranges from 100 Hz to 2000 Hz; and the preset pulse width ranges from 50 ns to 500 ns.

[0057] An oil layer displacement device provided by an embodiment of the present invention can execute an oil layer displacement method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

[0058] Example 3

[0059] Figure 3 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention 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 processing, cellular phones, smart phones, 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 examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0060] like Figure 3 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11. The memory stores a computer program that can be executed by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. Various programs and data required for the operation of the electronic device 10 can also be stored in the RAM 13. The processor 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0061] Multiple components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0062] The processor 11 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as an oil reservoir flooding method.

[0063] In some embodiments, a reservoir flooding method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the reservoir flooding method described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform a reservoir flooding method by any other appropriate means (e.g., by means of firmware).

[0064] Various embodiments of the systems and techniques described 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), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0065] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0066] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0067] 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 can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the 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 acoustic input, voice input, or tactile input).

[0068] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0069] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0070] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0071] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A method for flooding an oil layer, characterized in that: include: Turn on the high-pressure pump group to transport the water in the injection water container to the injection well; Turn on the AC power supply, and apply ultrasonic waves of a preset frequency to the oil layer in the injection well through the ultrasonic generator, transmission cable and electroacoustic transducer to perform ultrasonic flooding; Turn on the high-voltage pulse power supply and perform pulse liquid phase discharge oil displacement on the oil layer in the injection well by using a preset discharge voltage, a preset discharge frequency and a preset pulse width; Exploit the crude oil in the oil layer and determine the crude oil recovery rate.

2. The method according to claim 1, characterized in that The oil displacement processes of the ultrasonic oil displacement and the pulsed liquid phase discharge oil displacement include simultaneous oil displacement, intermittent oil displacement or alternating oil displacement.

3. The method according to claim 1, characterized in that The preset frequency ranges from 20 KHz to 60 KHz.

4. The method according to claim 1, wherein The preset discharge voltage ranges from 2 kV to 40 kV; the preset discharge frequency ranges from 100 Hz to 2000 Hz; and the preset pulse width ranges from 50 ns to 500 ns.

5. An oil layer displacement device, characterized in that: include: A water delivery module is used to start the high-pressure pump group to deliver the water injected into the water container to the injection well; The ultrasonic flooding module is used to turn on the AC power supply and apply ultrasonic waves of a preset frequency to the oil layer in the injection well through the ultrasonic generator, transmission cable and electroacoustic transducer to perform ultrasonic flooding; The pulse liquid phase discharge oil recovery module is used to turn on the high-voltage pulse power supply and perform pulse liquid phase discharge oil recovery on the oil layer in the injection well through a preset discharge voltage, preset discharge frequency and preset pulse width; The crude oil recovery rate determination module is used to extract crude oil from the oil layer and determine the crude oil recovery rate.

6. The device according to claim 5, characterized in that The oil displacement processes of the ultrasonic oil displacement and the pulsed liquid phase discharge oil displacement include simultaneous oil displacement, intermittent oil displacement or alternating oil displacement.

7. The device according to claim 5, characterized in that The preset frequency ranges from 20 KHz to 60 KHz.

8. The device according to claim 5, characterized in that The preset discharge voltage ranges from 2 kV to 40 kV; the preset discharge frequency ranges from 100 Hz to 2000 Hz; and the preset pulse width ranges from 50 ns to 500 ns.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; 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 so that the at least one processor can perform an oil layer displacement method according to any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement an oil layer displacement method according to any one of claims 1 to 4 when executed.

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