Electric energy multi-form conversion assisted nanofluid oil displacement method and device

Abstract

The invention discloses a nanofluid oil displacement method and device assisted by multi-form conversion of electric energy. The method comprises the following steps: preparing a nanofluid matched with a target oil reservoir and used for nanofluid oil displacement according to the core of the target oil reservoir, the properties of crude oil and formation water, and mixing the nanofluid and injection water to prepare a nanofluid mixed solution; the nanofluid mixed solution is injected into a water injection well of a target oil reservoir; and applying at least two forms of action fields based on electric energy conversion to the target oil reservoir, and performing oil displacement on the target oil reservoir based on the at least two forms of action fields based on electric energy conversion. By the adoption of the technical scheme, when oil displacement is conducted through the nanofluid, the oil displacement process of the nanofluid is assisted through the at least two action fields based on electric energy conversion, and the recovery rate of nanofluid displacement is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield development, and in particular to a method and device for nanofluid oil displacement assisted by multi-form conversion of electric energy. Background Art

[0002] my country is extremely short of oil resources. In recent years, domestic crude oil production has been only about 200 million tons, and the country's dependence on foreign crude oil has long exceeded 70%, seriously affecting my country's energy security. Therefore, how to maintain "stable production and increased production" has been a long-term problem faced by domestic oil companies.

[0003] The utilization of renewable green electricity for crude oil extraction and processing has become a key development trend in the oil industry. Improving oil recovery by physically applying green electricity to oil fields has become a research hotspot in oil and gas blockage relief and production enhancement. While both electrical energy conversion-based fields (DC fields, ultrasound, and pulsed liquid discharge) and nanofluids can each enhance oil recovery, there is currently no technology that utilizes these fields to assist nanofluid flooding. Summary of the Invention

[0004] The present invention provides a method and device for nanofluid oil displacement assisted by multi-form conversion of electric energy, so as to solve the problem of low recovery rate during nanofluid oil displacement.

[0005] According to one aspect of the present invention, a method for nanofluid oil displacement assisted by multi-form electrical energy conversion is provided, the method comprising:

[0006] According to the core, crude oil properties and formation water of the target oil reservoir, a nanofluid for nanofluid flooding matching the target oil reservoir is prepared, and the nanofluid is mixed with injection water to prepare a nanofluid mixed solution;

[0007] injecting the nanofluid mixed solution into a water injection well in a target oil reservoir;

[0008] At least two types of action fields based on electric energy conversion are applied to the target oil reservoir, and the target oil reservoir is driven by using the at least two types of action fields based on electric energy conversion.

[0009] According to another aspect of the present invention, there is provided a nanofluid oil displacement device assisted by multi-form electric energy conversion, the device comprising:

[0010] The nanofluid mixing module is used to prepare nanofluids for nanofluid flooding that match the target reservoir based on the core, crude oil properties and formation water of the target reservoir, and to mix the nanofluids with injection water to prepare a nanofluid mixed solution;

[0011] a nanofluid injection module for injecting a nanofluid mixed solution into an injection well of a target oil reservoir;

[0012] The oil reservoir displacement module is used to apply at least two forms of action fields based on electric energy conversion to the target oil reservoir, and use at least two forms of action fields based on electric energy conversion to drive oil from the target oil reservoir.

[0013] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0014] at least one processor; and

[0015] a memory communicatively connected to at least one processor; wherein,

[0016] The memory stores a computer program executable by at least one processor. The computer program is executed by at least one processor so that the at least one processor can execute the nanofluid oil displacement method assisted by multi-form electric energy conversion according to any embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for enabling a processor to implement the nanofluid oil displacement method assisted by multi-form electric energy conversion according to any embodiment of the present invention when executed.

[0018] The technical solution of the embodiment of the present invention is to prepare a nanofluid for nanofluid oil recovery that matches the target oil reservoir based on the core, crude oil properties and formation water of the target oil reservoir, mix the nanofluid and injection water to prepare a nanofluid mixed solution, inject the nanofluid mixed solution into the water injection well of the target oil reservoir, apply at least two forms of action fields based on electric energy conversion to the target oil reservoir, and use at least two forms of action fields based on electric energy conversion to recover oil from the target oil reservoir, so that when the nanofluid is used to recover oil, the nanofluid oil recovery process is assisted by at least two action fields based on electric energy conversion, thereby improving the recovery rate of the nanofluid drive.

[0019] 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

[0020] 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.

[0021] Figure 1This is a flow chart of a method for nanofluid oil displacement assisted by multi-form conversion of electrical energy according to Example 1 of the present invention;

[0022] Figure 2 This is a schematic structural diagram of a nanofluid oil displacement device assisted by multi-form electric energy conversion according to the second embodiment of the present invention;

[0023] Figure 3 It is a structural schematic diagram of an electronic device for implementing the method for assisted nanofluid oil displacement by multi-form conversion of electric energy according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] Example 1

[0027] Figure 1 A flow chart of a method for multi-form conversion of electric energy to assist nanofluid oil recovery is provided for the first embodiment of the present invention. This embodiment is applicable to the case where the recovery rate is low when using nanofluid oil recovery. The method can be performed by a multi-form conversion of electric energy to assist nanofluid oil recovery device. The multi-form conversion of electric energy to assist nanofluid oil recovery device can be implemented in the form of hardware and / or software. The multi-form conversion of electric energy to assist nanofluid oil recovery device can be configured in an electronic device with data processing capabilities. Figure 1 As shown, the method includes:

[0028] S110. According to the core of the target oil reservoir, the properties of the crude oil and the formation water, a nanofluid for nanofluid flooding matching the target oil reservoir is prepared, and the nanofluid is mixed with injection water to prepare a nanofluid mixed solution.

[0029] The target reservoir may be the reservoir to be flooded. The crude oil properties may be the properties of the crude oil in the target reservoir, including but not limited to color, density, viscosity, chemical composition, and impurity content.

[0030] The core, crude oil properties and formation water of the target oil reservoir are obtained, and according to the existing nanofluid flooding method, corresponding nanofluid for nanofluid flooding is prepared, and the nanofluid is mixed with the formation water to obtain a nanofluid mixed solution.

[0031] S120, injecting the nanofluid mixed solution into the water injection well of the target oil reservoir.

[0032] A water injection well may be a well that injects water into a target oil reservoir.

[0033] The nanofluid mixed solution is injected into the water injection well of the target oil reservoir through a high-pressure pump and other equipment to drive oil from the target oil reservoir.

[0034] S130: Apply at least two types of action fields based on electric energy conversion to the target oil reservoir, and use at least two types of action fields based on electric energy conversion to drive oil from the target oil reservoir.

[0035] Before oil is displaced from a target reservoir, at least two types of fields based on electric energy conversion are applied to the target reservoir. Thus, when displacing oil from the target reservoir, the characteristics of multiple fields based on electric energy conversion can be utilized to improve the oil recovery rate, thereby achieving the effect of improving the recovery rate of nanofluid oil displacement.

[0036] In an optional solution, at least two types of fields based on electrical energy conversion are used to flood the target reservoir, which may include steps A1-A2:

[0037] Step A1: Determine the recovery factor of the target oil reservoir based on the oil displacement products obtained by oil displacement.

[0038] Step A2: If the increase in the recovery rate within the preset time is less than the preset increment, adjust the action parameters of at least two forms of action fields based on electric energy conversion until the increase is greater than or equal to the preset increment.

[0039] During the flooding process, the recovery factor of the target reservoir is calculated based on the flooding products obtained during the flooding process. If the recovery factor increases by less than a preset increment within a preset time period, it indicates that the current parameters of at least two types of electric energy conversion-based action fields are insufficient to further increase the recovery factor. In this case, the parameters of the at least two types of electric energy conversion-based action fields will be adjusted until the increase is greater than or equal to the preset increment, thereby ensuring an increase in the recovery factor.

[0040] Optionally, after adjusting the action parameters of at least two types of action fields based on electric energy conversion, the method further includes:

[0041] If the increase in recovery rate within the preset time is less than the preset increment and the number of adjustments of the action parameter reaches the preset adjustment condition, the adjustment of the action parameter is stopped; wherein the preset adjustment condition is determined according to the preset range of the action parameter.

[0042] The preset adjustment condition may be a maximum number of times the action parameter is adjusted, determined according to a preset range of the action parameter.

[0043] If the increase in the recovery factor within the preset time is less than the preset increment, and the number of adjustments to the action parameters reaches the preset adjustment conditions, it indicates that it is difficult to find specific action parameters within the preset range that can improve the recovery factor. At this time, in order to avoid wasting resources, the action parameters will no longer be adjusted.

[0044] Optionally, the at least two forms of action fields based on electric energy conversion include at least a direct current electric field;

[0045] Accordingly, at least two types of fields based on electrical energy conversion are applied to the target reservoir, including:

[0046] At least a direct current electric field having a potential gradient within a first preset range is applied to the target reservoir.

[0047] A DC electric field with a potential gradient within a first preset range is applied between the water injection well and the production well by means of a DC power supply and other equipment.

[0048] The present application discloses a first preset range, but is not limited thereto. The first preset range is 1 to 10 V / cm, preferably 8 V / cm.

[0049] Optionally, the at least two forms of action fields based on electrical energy conversion include at least an ultrasonic field;

[0050] Accordingly, at least two types of fields based on electrical energy conversion are applied to the target reservoir, including:

[0051] At least an ultrasonic field having an ultrasonic frequency within a second preset range is applied to the target oil reservoir.

[0052] An ultrasonic field having an ultrasonic frequency within a second preset range is applied to the target oil reservoir by applying an ultrasonic effect of a certain frequency to the target oil reservoir through equipment such as an AC power supply, an ultrasonic generator, a transmission cable and an electroacoustic transducer.

[0053] The present application discloses a second preset range, but does not limit it. The second preset range is 20 to 60 KHz, preferably 28 KHz.

[0054] Optionally, the at least two forms of action fields based on electrical energy conversion include at least a high-voltage pulsed liquid phase discharge field;

[0055] Accordingly, at least two types of fields based on electrical energy conversion are applied to the target reservoir, including:

[0056] A high-voltage pulse liquid phase discharge field having a voltage intensity within a third preset range, a frequency within a fourth preset range, and a pulse width within a fifth preset range is applied to the target reservoir.

[0057] Turn on the high-voltage pulse power supply and other equipment to apply a high-voltage pulse liquid phase discharge field to the target reservoir with at least a voltage intensity within the third preset range, a frequency within the fourth preset range, and a pulse width within the fifth preset range.

[0058] The present application discloses a third preset range, but does not limit it. The third preset range is 2 to 40 kV, preferably 23 kV.

[0059] The present application discloses a fourth preset range, but is not limited thereto. The fourth preset range is 100 to 2000 Hz, preferably 120 Hz.

[0060] The present application discloses a fifth preset range, but does not limit it. The fifth preset range is 10 to 500 ns, preferably 230 ns.

[0061] Optionally, the starting point of application time and / or the length of application time of at least two forms of the active field based on electrical energy conversion are the same and / or different.

[0062] According to the technical solution of an embodiment of the present invention, a nanofluid for nanofluid flooding that matches the target oil reservoir is prepared based on the core, crude oil properties and formation water of the target oil reservoir, and the nanofluid and injection water are mixed to prepare a nanofluid mixed solution. The nanofluid mixed solution is injected into the water injection well of the target oil reservoir, at least two forms of action fields based on electric energy conversion are applied to the target oil reservoir, and at least two forms of action fields based on electric energy conversion are used to flood the target oil reservoir. When the nanofluid is used for oil flooding, the at least two action fields based on electric energy conversion are used to assist the nanofluid flooding process, thereby improving the recovery rate of the nanofluid flooding.

[0063] Example 2

[0064] Figure 2 The present invention provides a structural block diagram of a nanofluid oil recovery device assisted by multi-form electric energy conversion. This embodiment is applicable to situations where the recovery rate is low when using nanofluid oil recovery. The nanofluid oil recovery device assisted by multi-form electric energy conversion can be implemented in the form of hardware and / or software. The nanofluid oil recovery device assisted by multi-form electric energy conversion can be configured in an electronic device with data processing capabilities. Figure 2 As shown, the electric energy multi-form conversion assisted nanofluid oil displacement device of this embodiment may include: a nanofluid mixing module 210, a nanofluid injection module 220 and an oil reservoir oil displacement module 230. Among them:

[0065] The nanofluid mixing module 210 is used to prepare a nanofluid for nanofluid flooding that matches the target reservoir based on the core, crude oil properties, and formation water of the target reservoir, and to mix the nanofluid with injection water to prepare a nanofluid mixed solution;

[0066] The nanofluid injection module 220 is used to inject the nanofluid mixed solution into the water injection well of the target oil reservoir;

[0067] The oil reservoir displacement module 230 is used to apply at least two forms of action fields based on electric energy conversion to the target oil reservoir, and use at least two forms of action fields based on electric energy conversion to drive oil from the target oil reservoir.

[0068] Based on the above embodiment, optionally, the reservoir displacement module 230 includes:

[0069] A recovery factor calculation unit is used to determine the recovery factor of the target oil reservoir based on the oil displacement products obtained by oil displacement;

[0070] The action parameter adjustment unit is used to adjust the action parameters of at least two forms of action fields based on electric energy conversion if the increase in recovery rate within a preset time is less than a preset increment, until the increase is greater than or equal to the preset increment.

[0071] Based on the above embodiment, optionally, after the action parameter adjustment unit, the device further includes:

[0072] The parameter stop adjustment unit is used to stop adjusting the action parameter if the increase in the recovery rate within the preset time is less than the preset increment and the number of adjustments to the action parameter reaches the preset adjustment condition; wherein the preset adjustment condition is determined according to the preset range of the action parameter.

[0073] Based on the above embodiment, optionally, the at least two forms of action fields based on electric energy conversion include at least a direct current electric field;

[0074] Accordingly, the reservoir displacement module 230 includes:

[0075] The DC electric field applying unit is used to apply a DC electric field having a potential gradient within a first preset range to the target oil reservoir.

[0076] Based on the above embodiment, optionally, the at least two forms of action fields based on electrical energy conversion include at least an ultrasonic field;

[0077] Accordingly, the reservoir displacement module 230 includes:

[0078] The ultrasonic field applying unit is used to apply an ultrasonic field having an ultrasonic frequency within a second preset range to the target oil reservoir.

[0079] Based on the above embodiment, optionally, the at least two forms of action fields based on electric energy conversion include at least a high-voltage pulsed liquid phase discharge field;

[0080] Accordingly, the reservoir displacement module 230 includes:

[0081] The high-voltage pulse liquid phase discharge field applying unit is used to apply a high-voltage pulse liquid phase discharge field with a voltage intensity within a third preset range, a frequency within a fourth preset range, and a pulse width within a fifth preset range to the target reservoir.

[0082] Based on the above embodiment, optionally, the starting point of application time and / or the length of application time of at least two forms of the action field based on electric energy conversion are the same and / or different.

[0083] The electric energy multi-form conversion assisted nanofluid oil displacement device provided in the embodiment of the present invention can execute the electric energy multi-form conversion assisted nanofluid oil displacement method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0084] Example 3

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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 that run 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 the multi-form conversion of electrical energy assisted nanofluid flooding method.

[0089] In some embodiments, the electric energy multi-form conversion assisted nanofluid 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 electric energy multi-form conversion assisted nanofluid flooding method described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the electric energy multi-form conversion assisted nanofluid flooding method by any other appropriate means (for example, by means of firmware).

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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).

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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 nanofluid oil displacement method assisted by multi-form conversion of electrical energy, characterized in that: include: According to the core, crude oil properties and formation water of the target oil reservoir, a nanofluid for nanofluid flooding matching the target oil reservoir is prepared, and a nanofluid mixed solution is prepared based on the nanofluid and the formation water; injecting the nanofluid mixed solution into a water injection well of the target oil reservoir; At least two types of action fields based on electric energy conversion are applied to the target oil reservoir, and the target oil reservoir is driven by using the at least two types of action fields based on electric energy conversion.

2. The method according to claim 1, characterized in that The target oil reservoir is flooded based on the at least two types of electric energy conversion-based action fields, including: Determining the recovery factor of the target oil reservoir based on the oil displacement products obtained by oil displacement; If the increase in the recovery rate within the preset time is less than the preset increment, the action parameters of the at least two forms of action fields based on electric energy conversion are adjusted until the increase is greater than or equal to the preset increment.

3. The method according to claim 2, characterized in that After adjusting the action parameters of the at least two types of action fields based on electric energy conversion, the method further includes: If the increase in the recovery rate within the preset time is less than the preset increment, and the number of adjustments of the action parameter reaches the preset adjustment condition, the adjustment of the action parameter is stopped; wherein the preset adjustment condition is determined according to the preset range of the action parameter.

4. The method according to claim 1, wherein The at least two forms of action fields based on electric energy conversion include at least a direct current electric field; Accordingly, at least two types of fields based on electrical energy conversion are applied to the target oil reservoir, including: At least the DC electric field having a potential gradient within a first preset range is applied to the target oil reservoir.

5. The method according to claim 1, characterized in that The at least two forms of action fields based on electrical energy conversion include at least an ultrasonic field; Accordingly, at least two types of fields based on electrical energy conversion are applied to the target oil reservoir, including: At least the ultrasonic field having an ultrasonic frequency within a second preset range is applied to the target oil reservoir.

6. The method according to claim 1, wherein The at least two forms of action fields based on electric energy conversion include at least a high-voltage pulse liquid phase discharge field; Accordingly, at least two types of fields based on electrical energy conversion are applied to the target oil reservoir, including: The high-voltage pulse liquid phase discharge field having a voltage intensity within a third preset range, a frequency within a fourth preset range, and a pulse width within a fifth preset range is applied to the target oil reservoir.

7. The method according to claim 1, characterized in that The starting point of application time and / or the length of application time of the at least two forms of the active fields based on electrical energy conversion are the same and / or different.

8. A nanofluid oil displacement device assisted by multi-form electric energy conversion, characterized in that: include: A nanofluid mixing module is used to prepare a nanofluid for nanofluid flooding that matches the target oil reservoir based on the core, crude oil properties and formation water of the target oil reservoir, and to prepare a nanofluid mixed solution based on the nanofluid and the formation water; a nanofluid injection module, configured to inject the nanofluid mixed solution into the water injection well of the target oil reservoir; The oil reservoir displacement module is used to apply at least two forms of action fields based on electric energy conversion to the target oil reservoir, and use the at least two forms of action fields based on electric energy conversion to drive oil from the target oil reservoir.

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 to enable the at least one processor to perform the nanofluid oil displacement method assisted by multi-form electric energy conversion according to any one of claims 1 to 7.

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 nanofluid oil displacement method assisted by multi-form electric energy conversion according to any one of claims 1 to 7 when executed.

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