Composite oil displacement method, device, equipment and medium based on physical field and surfactant

Abstract

The invention discloses a composite oil displacement method, device, equipment and medium based on a physical field and a surfactant. The method comprises the steps that the mass concentration of a surfactant aqueous solution is determined according to oil well parameter information, the surfactant aqueous solution is fed into an injection well, and surfactant oil displacement is conducted; physical field action is applied to the oil well through physical field equipment, and physical field oil displacement is conducted; wherein the physical field comprises at least one of a direct-current electric field, ultrasonic waves and pulse liquid phase discharge; and under the combined action of surfactant oil displacement and physical field oil displacement, crude oil is extracted from the extraction well. According to the method, the crude oil is exploited by utilizing renewable electric power through the composite oil displacement effect of the physical field and the surfactant, and the recovery rate of the crude oil is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil extraction, and in particular to a physical field and surfactant-based composite oil displacement method, device, equipment and medium. Background Art

[0002] my country is extremely short of oil resources. In recent years, domestic crude oil production has been only approximately 200 million tons, and dependence on foreign crude oil has long exceeded 70%, seriously impacting my country's energy security. Therefore, maintaining stable and increasing production has long been a crucial economic and political task for domestic oil companies. Under the constraints of the "3060 Dual Carbon" goals, renewable electricity, primarily from wind, hydropower, and solar power, is projected to account for over 60% of China's electricity by 2050. Therefore, utilizing renewable electricity to extract and process crude oil has become a key development trend in the oil industry. Summary of the Invention

[0003] The present invention provides a physical field and surfactant-based composite oil displacement method, device, equipment and medium to solve the problem of low crude oil recovery rate.

[0004] According to one aspect of the present invention, a composite oil displacement method based on physical fields and surfactants is provided, comprising:

[0005] Determining the mass concentration of the surfactant aqueous solution based on oil well parameter information, and delivering the surfactant aqueous solution into the injection well to perform surfactant flooding;

[0006] Applying a physical field to the oil well through a physical field device to perform physical field flooding; wherein the physical field includes at least one of the following: a direct current electric field, ultrasonic waves, and pulsed liquid discharge;

[0007] Under the combined action of surfactant flooding and physical field flooding, crude oil is produced in the production well.

[0008] According to another aspect of the present invention, a composite flooding system based on physical field and surfactant is provided, the composite flooding system comprising: a surfactant aqueous solution flooding device and a physical field device;

[0009] The surfactant aqueous solution flooding equipment includes an injection water container and a high-pressure pump group, which are used to deliver the surfactant aqueous solution into the injection well through the injection water container and the high-pressure pump group to perform surfactant flooding; wherein the mass concentration of the surfactant aqueous solution is determined based on the oil well parameter information;

[0010] Physical field equipment, used to apply physical field effects to oil wells to perform physical field flooding;

[0011] Under the combined action of surfactant flooding and physical field flooding, crude oil is produced in the production well.

[0012] According to another aspect of the present invention, an electronic device is provided, comprising:

[0013] at least one processor; and

[0014] a memory communicatively connected to the at least one processor; wherein,

[0015] 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 the physical field and surfactant-based composite oil recovery method described in any embodiment of the present invention.

[0016] 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 the physical field and surfactant-based composite oil recovery method described in any embodiment of the present invention when executed.

[0017] The technical solution of the embodiment of the present invention utilizes the combined oil displacement effect of physical field and surfactant to exploit crude oil using renewable electricity and improve the crude oil recovery rate.

[0018] 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

[0019] 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.

[0020] Figure 1 This is a flow chart of a composite oil displacement method based on physical fields and surfactants provided in accordance with the first embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of an electronic device for implementing the physical field and surfactant-based composite oil displacement method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] 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.

[0023] It should be noted that the terms "candidate", "target", 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 terms used in this way can be interchangeable 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 that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products or devices.

[0024] Example 1

[0025] Figure 1 A flow chart of a composite oil recovery method based on physical field and surfactant is provided for the first embodiment of the present invention. This embodiment is applicable to the case of exploiting crude oil using renewable electricity. The method can be executed by a composite oil recovery system based on physical field and surfactant. The composite oil recovery system based on physical field and surfactant can be implemented in the form of hardware and software. Figure 1 As shown, the method includes:

[0026] S110 , determining the mass concentration of the surfactant aqueous solution according to the oil well parameter information, and sending the surfactant aqueous solution into the injection well to perform surfactant flooding.

[0027] Surfactant flooding is a chemical flooding method. Other chemical flooding methods include polymer flooding, surfactant / polymer binary composite flooding, alkali / surfactant / polymer ternary composite flooding, etc.

[0028] Specifically, a surfactant aqueous solution of a certain mass concentration is prepared and added to an injection water container. The surfactant aqueous solution in the injection water container is then transported to an injection well of an oil well to perform surfactant flooding. The surfactant aqueous solution can be determined based on the actual situation of the oil well and is not limited here.

[0029] In a feasible embodiment, the oil well parameter information includes at least: reservoir core property parameter information, crude oil property parameter information and formation water property parameter information; wherein the reservoir core property parameter information includes at least one of the following: surface tension, permeability, porosity and mineral element composition, the crude oil property parameter information includes at least one of the following: viscosity, density and chemical composition, and the formation water property parameter information includes at least one of the following: mineralization and ion composition.

[0030] Specifically, based on reservoir core property parameter information, such as surface tension, permeability, porosity, and mineral element composition, crude oil property parameter information, such as viscosity, density, and chemical composition, and formation water property parameter information, such as salinity and ion composition, a surfactant aqueous solution of a certain mass concentration is prepared and added to the injection water container. The specific configuration method can be determined based on actual conditions and is not limited here.

[0031] S120. Applying a physical field to the oil well through a physical field device to perform physical field flooding; wherein the physical field includes at least one of the following: a direct current electric field, ultrasonic waves, and pulsed liquid phase discharge.

[0032] The oil recovery method of applying a physical field to the oil field has a good oil recovery effect. Specifically, the oil recovery technology of applying a DC electric field to the oil layer has a good water control and oil increase effect. At the same time, it has a wide range of applications, simple processes and low costs, and has great development potential. The ultrasonic energy converted from electrical energy produces mechanical vibration, cavitation, thermal, and acoustic flow effects on the oil layer, changing the mechanical properties of the porous medium, breaking the original balance of the reservoir, thereby increasing the reservoir permeability; causing the crude oil in the oil reservoir to crack and heat and cavitation, improving the fluidity of the crude oil, and effectively increasing crude oil 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 will produce physical effects such as heat, light, force, and sound. Due to its advantages such as being environmentally friendly, significantly increasing production, and low cost, it also has a good effect on improving the recovery rate of crude oil extraction.

[0033] In a feasible embodiment, the physical field includes at least two of the following: a direct current electric field, ultrasonic waves, and pulsed liquid discharge;

[0034] Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including:

[0035] Based on different and / or the same application time starting points and / or application time lengths, at least two physical field effects are applied to the oil well by at least two physical field devices to perform physical field flooding.

[0036] Specifically, multiple physical fields are applied simultaneously to the oil field to enhance the oil recovery rate of physical field flooding. For example, DC field flooding, ultrasonic flooding, and pulsed liquid discharge flooding can be performed simultaneously, intermittently, or alternately. This multi-field flooding approach improves oil recovery.

[0037] In a feasible embodiment, the physical field is a DC electric field, and the physical field device includes a DC power supply and a DC power supply electrode;

[0038] Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including:

[0039] The DC power supply electrodes are arranged in the production well and the injection well;

[0040] The DC power supply is turned on, and an electric field with a preset potential gradient is applied between the injection well and the production well through the DC power supply electrodes to perform DC electric field flooding.

[0041] The positive and negative electrodes of a DC power supply are placed in the injection well and the production well, respectively. The DC power supply is placed on the ground outside the oil field. The DC power supply electrodes are connected, the DC power supply is turned on, and an electric field with a preset potential gradient is applied between the injection well and the production well to perform DC electric field flooding. The preset potential gradient can be determined based on the actual conditions of the oil field, for example, the preset potential gradient is between 1 and 10 V / cm, preferably 5 V / cm.

[0042] In a feasible embodiment, the physical field is ultrasonic wave, and the physical field equipment includes an AC power supply, an ultrasonic generator, a transmission cable and an electroacoustic transducer;

[0043] Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including:

[0044] placing the electroacoustic transducer in an injection well;

[0045] Turn on the AC power supply, apply ultrasonic waves of preset frequency to the oil layer through the ultrasonic generator, transmission cable and electroacoustic transducer to carry out ultrasonic flooding.

[0046] An electroacoustic transducer is placed in an injection well, an AC power supply and an ultrasonic generator are placed on the ground and connected to the electroacoustic transducer via a transmission cable. The AC power supply is turned on, and ultrasonic waves of a preset frequency are applied to the oil layer via the ultrasonic generator, transmission cable, and electroacoustic transducer to perform ultrasonic flooding. The preset frequency can be determined based on the actual conditions of the oil field, for example, the preset frequency of the ultrasonic wave is between 20 and 60 kHz, preferably 22 kHz.

[0047] In a feasible embodiment, the physical field is a pulsed liquid phase discharge, and the physical field device includes a high-voltage pulse power supply and a high-voltage pulse power supply electrode;

[0048] Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including:

[0049] The high-voltage pulse power supply electrode is arranged in the injection well;

[0050] The high-voltage pulse power supply is turned on, and pulse liquid phase discharge is performed through the high-voltage pulse power supply electrode at a preset discharge voltage, a preset discharge frequency and a preset pulse width to perform pulse liquid phase discharge oil displacement.

[0051] Since pulsed liquid phase discharge requires a relatively close distance between the electrodes of the high-voltage pulse power supply, the positive and negative electrodes of the high-voltage pulse power supply electrodes are placed in the injection well, and the distance between the positive and negative electrodes is adjusted according to the actual situation, which is not limited here. The high-voltage pulse power supply is placed on the ground, and the high-voltage pulse power supply is turned on to perform pulsed liquid phase discharge oil recovery with a preset discharge voltage, a preset discharge frequency, and a preset pulse width. The values ​​of the preset discharge voltage, the preset discharge frequency, and the preset pulse width are determined according to the actual situation of the oil field, which are not limited here. For example, the preset discharge voltage is between 2 and 40 kV, preferably 18 kV; the preset discharge frequency is between 100 and 2000 Hz, preferably 300 Hz; and the preset pulse width is between 10 and 500 ns, preferably 100 ns.

[0052] S130. Under the combined action of surfactant flooding and physical field flooding, crude oil is produced in the production well.

[0053] Under the simultaneous combined flooding of surfactant flooding and physical field flooding, crude oil is produced in the production well, and the crude oil recovery factor is calculated.

[0054] The embodiments of the present invention utilize a combined flooding effect of a physical field and a surfactant to exploit crude oil using renewable electricity and improve the crude oil recovery rate. Furthermore, the combined flooding effect of multiple physical fields and surfactants further improves the crude oil recovery rate.

[0055] Example 2

[0056] The embodiment of the present invention provides a composite oil recovery system based on physical field and surfactant. The composite oil recovery system includes: surfactant aqueous solution oil recovery equipment and physical field equipment;

[0057] Surfactant aqueous solution flooding equipment is used to deliver the surfactant aqueous solution into the injection well to perform surfactant flooding; wherein the mass concentration of the surfactant aqueous solution is determined based on the oil well parameter information; the surfactant aqueous solution flooding equipment includes an injection water container and a high-pressure pump group;

[0058] Physical field equipment, used to apply physical field effects to oil wells to perform physical field flooding;

[0059] Under the combined action of surfactant flooding and physical field flooding, crude oil is produced in the production well.

[0060] Optionally, the physical field devices include at least one of the following groups: a first group of physical field devices, a second group of physical field devices, and a third group of physical field devices;

[0061] Among them, the first group of physical field equipment includes: DC power supply and DC power supply electrode; the second group of physical field equipment includes: AC power supply, ultrasonic generator, transmission cable and electroacoustic transducer; the third group of physical field equipment includes high-voltage pulse power supply and high-voltage pulse power supply electrode.

[0062] Optionally, the first set of physical field devices includes a DC power supply and a DC power supply electrode;

[0063] Accordingly, the physical field equipment is used to apply a physical field effect to the oil well to perform physical field flooding, including:

[0064] The DC power supply electrodes are arranged in the production well and the injection well;

[0065] The DC power supply is turned on, and an electric field with a preset potential gradient is applied between the injection well and the production well through the DC power supply electrodes to perform DC electric field flooding.

[0066] Optionally, the second set of physical field equipment includes an AC power supply, an ultrasonic generator, a transmission cable, and an electroacoustic transducer;

[0067] Accordingly, the physical field equipment is used to apply a physical field effect to the oil well to perform physical field flooding, including:

[0068] placing the electroacoustic transducer in an injection well;

[0069] Turn on the AC power supply, apply ultrasonic waves of preset frequency to the oil layer through the ultrasonic generator, transmission cable and electroacoustic transducer to carry out ultrasonic flooding.

[0070] Optionally, the third group of physical field equipment includes a high-voltage pulse power supply and a high-voltage pulse power supply electrode;

[0071] Accordingly, the physical field equipment is used to apply a physical field effect to the oil well to perform physical field flooding, including:

[0072] The high-voltage pulse power supply electrode is arranged in the injection well;

[0073] The high-voltage pulse power supply is turned on, and pulse liquid phase discharge is performed through the high-voltage pulse power supply electrode at a preset discharge voltage, a preset discharge frequency and a preset pulse width to perform pulse liquid phase discharge oil displacement.

[0074] Optionally, the physical field includes at least two of the following: a direct current electric field, ultrasonic waves, and pulsed liquid discharge;

[0075] Accordingly, the physical field equipment is used to apply a physical field effect to the oil well to perform physical field flooding, including:

[0076] Based on different and / or the same application time starting points and / or application time lengths, at least two physical field effects are applied to the oil well by at least two groups of physical field equipment to perform physical field flooding.

[0077] Optionally, the oil well parameter information includes at least: reservoir core property parameter information, crude oil property parameter information and formation water property parameter information; wherein, the reservoir core property parameter information includes at least one of the following: surface tension, permeability, porosity and mineral element composition, the crude oil property parameter information includes at least one of the following: viscosity, density and chemical composition, and the formation water property parameter information includes at least one of the following: mineralization and ion composition.

[0078] The physical field and surfactant-based composite oil recovery system provided in the embodiment of the present invention can execute the physical field and surfactant-based composite oil recovery method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0079] The acquisition, storage, use, and processing of data in the technical solution of this application comply with the relevant provisions of national laws and regulations and do not violate public order and good morals.

[0080] Example 3

[0081] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0082] Figure 2A 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.

[0083] like Figure 2 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.

[0084] 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.

[0085] The processor 11 can be a variety of general and / or special processing components 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 dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The processor 11 executes the various methods and processes described above, such as a composite flooding method based on physical fields and surfactants.

[0086] In some embodiments, the composite flooding method based on physical field and surfactant 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 composite flooding method based on physical field and surfactant described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the composite flooding method based on physical field and surfactant by any other appropriate means (for example, by means of firmware).

[0087] Various embodiments of the systems and techniques described above can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific reference products (ASSPs), system-on-chip systems (SOCs), complex 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.

[0088] 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.

[0089] 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.

[0090] 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).

[0091] 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 switch 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 a web browser through which a user can interact with embodiments of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, switch 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.

[0092] 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.

[0093] 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.

[0094] 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 composite oil displacement method based on physical field and surfactant, characterized in that: The method includes: Determining the mass concentration of the surfactant aqueous solution based on oil well parameter information, and delivering the surfactant aqueous solution into the injection well to perform surfactant flooding; Applying a physical field to the oil well through a physical field device to perform physical field flooding; wherein the physical field includes at least one of the following: a direct current electric field, ultrasonic waves, and pulsed liquid discharge; Under the combined action of surfactant flooding and physical field flooding, crude oil is produced in the production well.

2. The method according to claim 1, characterized in that The physical field is a DC electric field, and the physical field equipment includes a DC power supply and a DC power supply electrode; Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including: The DC power supply electrodes are arranged in the production well and the injection well; The DC power supply is turned on, and an electric field with a preset potential gradient is applied between the injection well and the production well through the DC power supply electrodes to perform DC electric field flooding.

3. The method according to claim 1, characterized in that The physical field is ultrasonic wave, and the physical field equipment includes an AC power supply, an ultrasonic generator, a transmission cable and an electroacoustic transducer; Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including: placing the electroacoustic transducer in an injection well; Turn on the AC power supply, apply ultrasonic waves of preset frequency to the oil layer through the ultrasonic generator, transmission cable and electroacoustic transducer to carry out ultrasonic flooding.

4. The method according to claim 1, wherein The physical field is a pulsed liquid phase discharge, and the physical field equipment includes a high-voltage pulse power supply and a high-voltage pulse power supply electrode; Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including: The high-voltage pulse power supply electrode is arranged in the injection well; The high-voltage pulse power supply is turned on, and pulse liquid phase discharge is performed through the high-voltage pulse power supply electrode at a preset discharge voltage, a preset discharge frequency and a preset pulse width to perform pulse liquid phase discharge oil displacement.

5. The method according to claim 1, wherein The physical field includes at least two of the following: a direct current electric field, ultrasonic waves, and pulsed liquid discharge; Accordingly, physical field effects are applied to the oil wells through physical field equipment to carry out physical field flooding, including: Based on different and / or the same application time starting points and / or application time lengths, at least two physical field effects are applied to the oil well by at least two physical field devices to perform physical field flooding.

6. The method according to claim 1, characterized in that The oil well parameter information includes at least: reservoir core property parameter information, crude oil property parameter information and formation water property parameter information; wherein the reservoir core property parameter information includes at least one of the following: surface tension, permeability, porosity and mineral element composition, the crude oil property parameter information includes at least one of the following: viscosity, density and chemical composition, and the formation water property parameter information includes at least one of the following: salinity and ion composition.

7. A composite oil displacement system based on physical field and surfactant, characterized in that: The composite flooding system includes: surfactant aqueous solution flooding equipment and physical field equipment; Surfactant aqueous solution flooding equipment is used to deliver the surfactant aqueous solution into the injection well to perform surfactant flooding; wherein the mass concentration of the surfactant aqueous solution is determined based on the oil well parameter information; the surfactant aqueous solution flooding equipment includes an injection water container and a high-pressure pump group; Physical field equipment, used to apply physical field effects to oil wells to perform physical field flooding; Under the combined action of surfactant flooding and physical field flooding, crude oil is produced in the production well.

8. The system according to claim 7, characterized in that The physical field devices include at least one of the following groups: a first group of physical field devices, a second group of physical field devices, and a third group of physical field devices; Among them, the first group of physical field equipment includes: DC power supply and DC power supply electrode; the second group of physical field equipment includes: AC power supply, ultrasonic generator, transmission cable and electroacoustic transducer; the third group of physical field equipment includes high-voltage pulse power supply and high-voltage pulse power supply electrode.

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 that can be executed 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 physical field and surfactant-based composite oil recovery method according to any one of claims 1 to 6.

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 the physical field and surfactant-based composite oil recovery method according to any one of claims 1 to 6 when executed.

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