Heavy oil underground pulse liquid phase discharge system and in-situ modification method

Abstract

The embodiment of the invention discloses a heavy oil underground pulse liquid phase discharge system and an in-situ modification method. The method comprises the steps that in the thickened oil recovery process, thickened oil and formation water flow into an injection well, and preset pulse liquid phase discharge parameters are determined; the pulse liquid phase discharge parameters comprise preset discharge voltage, discharge frequency and pulse width; according to the preset pulse liquid phase discharge parameters, high-voltage pulse liquid phase discharge is carried out on the thickened oil in the production well; and thick oil obtained after the high-voltage pulse liquid phase discharge effect is obtained from the production well, and the viscosity reduction rate and the recovery rate of the thick oil are determined. By adopting the technical scheme of the embodiment of the invention, the viscosity and the density of the thickened oil are reduced by adopting the underground pulse liquid phase discharge effect, the in-situ modification of the thickened oil is realized, and the viscosity reduction rate and the recovery rate of the thickened oil can be effectively improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of oilfield development, and in particular to a heavy oil underground pulse liquid phase discharge system and an in-situ reforming method. 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%, severely impacting my country's energy security. Therefore, maintaining stable and increasing production has long been a crucial economic and environmental challenge for domestic oil companies. Heavy oil accounts for over 20% of my country's total reserves, with equity reserves exceeding 10 billion tons domestically and overseas. Annual production approaches 16 million tons, accounting for approximately 8% of China's total annual oil production. This plays a crucial role in ensuring stable crude oil production, and is expected to gradually increase as conventional crude oil production declines. Therefore, heavy oil will be a crucial oil resource in my country in the future. However, its high viscosity and poor physical and chemical properties make its extraction, transportation, and subsequent processing difficult. Therefore, the in-situ transformation of heavy oil to enhance its physical and chemical properties is of paramount importance.

[0003] Existing in-situ heavy oil modification technologies usually involve injecting catalysts and additives into the formation to improve the properties of the heavy oil through chemical modification reactions and physical dilution processes. However, there are still problems such as high catalyst usage costs and unsatisfactory modification effects. Summary of the Invention

[0004] The embodiment of the present invention provides a heavy oil underground pulse liquid phase discharge system and an in-situ reforming method, so as to realize in-situ reforming of heavy oil by using the underground pulse liquid phase discharge method, which can significantly improve the viscosity reduction rate and recovery rate of heavy oil.

[0005] In a first aspect, an embodiment of the present invention provides a heavy oil underground pulse liquid phase discharge system, comprising: a high-voltage pulse power supply, a high-voltage pulse power supply electrode, a cable, an injection well, and a production well; wherein,

[0006] The high-voltage pulse power supply electrode is connected to the high-voltage pulse power supply through a cable and is grounded through the cable;

[0007] The high-voltage pulse power supply electrode is installed on the inner wall of the production well to release the preset discharge voltage, discharge frequency and pulse width to perform in-situ reforming of the heavy oil in the production well.

[0008] In a second aspect, an embodiment of the present invention further provides a method for in-situ upgrading of heavy oil by underground pulsed liquid phase discharge, comprising:

[0009] During the heavy oil production process, heavy oil and formation water are allowed to flow into the injection well, and preset pulse liquid phase discharge parameters are determined; the pulse liquid phase discharge parameters include preset discharge voltage, discharge frequency and pulse width;

[0010] Performing high-voltage pulse liquid phase discharge on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters;

[0011] Obtain heavy oil after high-pressure pulse liquid phase discharge in the production well, and determine the viscosity reduction rate and recovery rate of the heavy oil.

[0012] In a third aspect, an embodiment of the present invention further provides a heavy oil underground pulsed liquid phase discharge system and an in-situ reforming device, comprising:

[0013] A preset pulse liquid phase discharge parameter determination module is used to allow heavy oil and formation water to flow into the injection well during heavy oil production and determine preset pulse liquid phase discharge parameters; the pulse liquid phase discharge parameters include preset discharge voltage, discharge frequency and pulse width;

[0014] A heavy oil pulse liquid phase in-situ reforming module is used to perform high-voltage pulse liquid phase discharge on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters;

[0015] The module for determining the viscosity reduction rate and recovery rate of heavy oil is used to obtain the heavy oil after high-pressure pulse liquid phase discharge in the production well and determine the viscosity reduction rate and recovery rate of the heavy oil.

[0016] In a fourth aspect, an embodiment of the present invention further provides an electronic device, the electronic device comprising:

[0017] one or more processors;

[0018] a storage device for storing one or more programs;

[0019] When the one or more programs are executed by the one or more processors, the one or more processors implement the heavy oil underground pulse liquid phase discharge system and in-situ reforming method described in any embodiment of the present invention.

[0020] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the heavy oil underground pulse liquid phase discharge system and in-situ reforming method described in any embodiment of the present invention.

[0021] Embodiments of the present invention provide a heavy oil underground pulsed liquid-phase discharge system and in-situ reforming method, device, electronic device, and storage medium. During the heavy oil production process, heavy oil and formation water are flowed into an injection well, and preset pulsed liquid-phase discharge parameters are determined; the pulsed liquid-phase discharge parameters include a preset discharge voltage, discharge frequency, and pulse width. High-voltage pulsed liquid-phase discharge is then applied to the heavy oil in the production well according to the preset pulsed liquid-phase discharge parameters. The heavy oil after the high-voltage pulsed liquid-phase discharge is obtained in the production well, and the viscosity reduction and recovery rate of the heavy oil are determined. Using the technical solutions of the embodiments of the present invention, underground pulsed liquid-phase discharge is used to reduce the viscosity and density of heavy oil, achieving in-situ reforming of the heavy oil and improving its viscosity reduction and recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects, and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered as limiting the present invention. Like reference characters are used throughout the drawings to denote like parts. In the drawings:

[0023] Figure 1 Schematic diagram of the structure of a heavy oil underground pulse liquid phase discharge system provided in an embodiment of the present invention;

[0024] Figure 2 1 is a flow chart of an in-situ reforming method for heavy oil by underground pulsed liquid phase discharge provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a heavy oil underground pulsed liquid phase discharge in-situ reforming device provided in an embodiment of the present invention;

[0026] Figure 4 It is a structural diagram of an electronic device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0028] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the various operations (or steps) as sequential processes, many of the operations (or steps) therein can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the various operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0029] Among them, 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.

[0030] Figure 1 This is a structural diagram of a heavy oil underground pulse liquid phase discharge system provided in an embodiment of the present invention. This embodiment is applicable to the case of in-situ reforming of heavy oil by underground pulse liquid phase discharge, such as Figure 1 As shown, the heavy oil underground pulse liquid phase discharge system provided in the embodiment of the present invention may include: a high-voltage pulse power supply, a high-voltage pulse power supply electrode, a cable, an injection well, and a production well; wherein,

[0031] The high-voltage pulse power supply electrode is connected to the high-voltage pulse power supply through a cable and is grounded through the cable;

[0032] The high-voltage pulse power supply electrode is installed on the inner wall of the production well to release the preset discharge voltage, discharge frequency and pulse width to perform in-situ reforming of the heavy oil in the production well.

[0033] Among them, see Figure 1 The high-pressure pump unit allows formation water to flow into the injection well. During heavy oil production, the heavy oil and formation water flow into the injection wellbore. A high-voltage pulse power supply is activated in the production well to cause the high-voltage pulse power supply electrodes to generate a preset discharge voltage, discharge frequency, and pulse width to perform in-situ modification of the heavy oil in the production well. The crude oil and produced water are then separated through an oil-water separator.

[0034] Optionally, the high-voltage pulse power supply electrode is installed on the inner wall of the production well, and further specifically includes:

[0035] If the production well is a vertical wellbore, the high-voltage pulse power supply electrode is installed at the bottom of the vertical wellbore;

[0036] If the production well is a horizontal wellbore, the high-voltage pulse power supply electrode is installed in the horizontal section of the horizontal wellbore;

[0037] Wherein, the production wells include vertical wellbores and horizontal wellbores.

[0038] The high-voltage pulse power supply is connected to a high-voltage pulse power supply electrode installed on the inner wall of the production well via a cable, and the high-voltage pulse power supply electrode is grounded via the cable. Production wells include vertical wells and horizontal wells. If the production well is a vertical well, the high-voltage pulse power supply electrode is installed at the bottom of the vertical well so that it is immersed in the heavy oil and degrades the heavy oil when it is released at a preset discharge voltage, discharge frequency, and pulse width. If the production well is a horizontal well, the high-voltage pulse power supply electrode is installed in the horizontal section of the horizontal well. At this horizontal section, the high-voltage pulse power supply electrode can be immersed in the heavy oil. When the high-voltage pulse power supply electrode releases the preset discharge voltage, discharge frequency, and pulse width, it can effectively degrade the heavy oil.

[0039] An embodiment of the present invention provides an underground pulsed liquid-phase discharge system for heavy oil. The system includes a high-voltage pulse power supply, a high-voltage pulse power supply electrode, a cable, an injection well, and a production well. The high-voltage pulse power supply electrode is connected to the high-voltage pulse power supply via the cable and is grounded via the cable. The high-voltage pulse power supply electrode is mounted on the inner wall of the production well and is used to discharge a preset discharge voltage, discharge frequency, and pulse width to perform in-situ reforming of the heavy oil in the production well. Using the technical solution of the embodiment of the present invention, the underground pulsed liquid-phase discharge system can effectively improve the viscosity reduction rate and recovery rate of the heavy oil.

[0040] Figure 2 This is a flow chart of a method for in-situ reforming of heavy oil by underground pulse liquid phase discharge provided in an embodiment of the present invention. The method of this embodiment can be executed by an in-situ reforming device for underground pulse liquid phase discharge of heavy oil, which can be implemented in hardware and / or software. The device can be configured in a server for in-situ reforming of heavy oil by underground pulse liquid phase discharge. The embodiment of the present invention further optimizes the above embodiment on the basis of the above embodiment, and the embodiment of the present invention can be combined with various optional schemes in one or more of the above embodiments. Figure 2 As shown, the in-situ reforming method for heavy oil provided in an embodiment of the present invention by underground pulsed liquid phase discharge may include the following steps:

[0041] S210. During heavy oil production, heavy oil and formation water are allowed to flow into an injection well, and preset pulse liquid phase discharge parameters are determined.

[0042] The pulsed liquid-phase discharge parameters include, but are not limited to, a preset discharge voltage, a discharge frequency, and a pulse width. In an embodiment of the present invention, during heavy oil production, heavy oil and formation water flow into an injection well, and preset pulsed liquid-phase discharge parameters are determined for the heavy oil in the injection well, so that the preset pulsed liquid-phase discharge parameters can be used to in-situ upgrade the heavy oil in the production well.

[0043] As an optional but non-limiting implementation, during the heavy oil production process, the heavy oil and formation water are allowed to flow into the injection well, and preset pulse liquid phase discharge parameters are determined, including but not limited to steps A1-A2:

[0044] Step A1: During heavy oil production, heavy oil and formation water are allowed to flow into an injection well.

[0045] Step A2: Obtain produced fluid mixed with heavy oil and formation water, and determine the discharge voltage, discharge frequency, and pulse width at which the viscosity and density of the heavy oil decrease the most through indoor experiments. The discharge voltage, discharge frequency, and pulse width are used as preset pulse liquid phase discharge parameters.

[0046] During heavy oil production, heavy oil and formation water flow into the wellbore. A certain amount of produced fluid, a mixture of heavy oil and water, was taken and, through laboratory experiments, the effects of liquid-phase pulse discharge parameters, such as discharge voltage, discharge frequency, and pulse width, on the properties of the heavy oil were investigated. The discharge voltage, discharge frequency, and pulse width at which the viscosity and density of the heavy oil dropped the most were determined. These discharge voltage, discharge frequency, and pulse width were then used as the preset pulsed liquid-phase discharge parameters.

[0047] S220 , performing high-voltage pulse liquid phase discharge on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters.

[0048] The high-voltage pulsed liquid-phase discharge effect can refer to the ability of the non-thermal plasma generated by the high-voltage pulsed liquid-phase discharge to degrade macromolecular heavy oil into small molecular products under moderate conditions, thereby reducing the viscosity and density of the heavy oil, thereby lightening the heavy oil and achieving in-situ upgrading. In the embodiments of the present invention, high-voltage pulsed liquid-phase discharge is applied to the heavy oil in the production well using predetermined pulsed liquid-phase discharge parameters to reduce the viscosity and density of the heavy oil, thereby achieving in-situ upgrading of the heavy oil.

[0049] As an optional but non-limiting implementation, the high-pressure pulse liquid phase discharge is performed on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters, including but not limited to steps B1-B2:

[0050] Step B1: Turn on the high-voltage pulse power supply in the production well to supply power to the high-voltage pulse power supply electrode, and make the high-voltage pulse power supply electrode release preset pulse liquid phase discharge parameters.

[0051] Step B2: Using preset pulse liquid phase discharge parameters, high-voltage pulse liquid phase discharge is performed on the heavy oil in the production well to perform in-situ reforming of the heavy oil.

[0052] In-situ modification refers to the process of changing crude oil properties, including but not limited to viscosity, density, and chemical composition, through physical and chemical reactions within the formation. In an embodiment of the present invention, a high-voltage pulse power supply is activated in the production well to power a high-voltage pulse power supply electrode, causing the high-voltage pulse power supply electrode to release preset pulsed liquid-phase discharge parameters. This discharges the heavy oil in the production well through high-voltage pulsed liquid-phase discharge, thereby reducing the viscosity and density of the heavy oil and improving the viscosity reduction rate and recovery rate.

[0053] Optionally, the preset pulsed liquid phase discharge parameters include, but are not limited to, discharge voltage, discharge frequency, and pulse width. The discharge voltage may be in the range of 5 to 50 kV, preferably 10 kV; the discharge frequency may be in the range of 200 to 2000 Hz, preferably 600 Hz; and the pulse width may be in the range of 50 to 500 ns, preferably 200 ns.

[0054] S230. Obtain heavy oil after high-pressure pulse liquid phase discharge in the production well, and determine the viscosity reduction rate and recovery rate of the heavy oil.

[0055] Among them, after high-pressure pulse liquid phase discharge is performed on the heavy oil in the production well, the viscosity and recovery rate of the heavy oil after the high-pressure pulse liquid phase discharge are obtained to determine the viscosity reduction rate and recovery rate of the heavy oil after the high-pressure pulse liquid phase discharge.

[0056] As an optional but non-limiting implementation, obtaining heavy oil after high-pressure pulse liquid phase discharge in the production well and determining the viscosity reduction rate and recovery rate of the heavy oil include but are not limited to steps C1-C3:

[0057] Step C1: Determine the viscosity and recovery rate of heavy oil before high-voltage pulse liquid phase discharge.

[0058] Step C2: Obtaining the heavy oil after the high-pressure pulse liquid phase discharge in the production well, and determining the viscosity and recovery rate of the heavy oil after the high-pressure pulse liquid phase discharge.

[0059] Step C3: Determine the viscosity reduction rate and recovery rate of the heavy oil based on the viscosity and recovery rate of the heavy oil before and after the high-voltage pulse liquid phase discharge.

[0060] Among them, the viscosity and recovery rate of heavy oil before and after high-voltage pulse liquid phase discharge are obtained to determine the viscosity reduction rate and recovery rate of heavy oil.

[0061]

[0062]

[0063] An embodiment of the present invention provides an in-situ reforming method for heavy oil using underground pulsed liquid-phase discharge. During the heavy oil production process, heavy oil and formation water are flowed into an injection well, and preset pulsed liquid-phase discharge parameters are determined; the pulsed liquid-phase discharge parameters include a preset discharge voltage, discharge frequency, and pulse width. High-voltage pulsed liquid-phase discharge is then applied to the heavy oil in the production well according to the preset pulsed liquid-phase discharge parameters. The heavy oil after the high-voltage pulsed liquid-phase discharge is obtained in the production well, and the viscosity reduction and recovery rate of the heavy oil are determined. Using the technical solution of the embodiment of the present invention, underground pulsed liquid-phase discharge is used to reduce the viscosity and density of heavy oil, achieving in-situ reforming of the heavy oil and improving the viscosity reduction and recovery rate of the heavy oil.

[0064] Figure 3 This is a schematic diagram of the structure of a heavy oil underground pulse liquid phase discharge in-situ reforming device provided in an embodiment of the present invention. The technical solution of this embodiment is applicable to the case of heavy oil underground pulse liquid phase discharge in-situ reforming. The device can be implemented by software and / or hardware and is generally integrated on any electronic device with network communication function, including but not limited to: servers, computers, personal digital assistants and other devices. Figure 3 As shown, the heavy oil underground pulsed liquid phase discharge in-situ reforming device provided in this embodiment may include:

[0065] The preset pulse liquid phase discharge parameter determination module 310 is used to allow the heavy oil and formation water to flow into the injection well during the heavy oil production process and determine the preset pulse liquid phase discharge parameters; the pulse liquid phase discharge parameters include the preset discharge voltage, discharge frequency and pulse width;

[0066] The heavy oil pulse liquid phase in-situ reforming module 320 is used to perform high-voltage pulse liquid phase discharge on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters;

[0067] The heavy oil viscosity reduction and recovery factor determination module 330 is used to obtain heavy oil after high-pressure pulse liquid phase discharge in the production well and determine the heavy oil viscosity reduction and recovery factor.

[0068] Based on the above embodiment, optionally, the preset pulse liquid phase discharge parameter determination module is specifically used to:

[0069] During heavy oil production, heavy oil and formation water are made to flow into the injection well;

[0070] The produced fluid mixed with heavy oil and formation water was obtained, and the discharge voltage, discharge frequency and pulse width when the viscosity and density of the heavy oil decreased the most were determined through indoor experiments. The discharge voltage, discharge frequency and pulse width were used as the preset pulse liquid phase discharge parameters.

[0071] Based on the above embodiment, optionally, the heavy oil pulse liquid phase in-situ reforming module is specifically used to:

[0072] In the production well, a high-voltage pulse power supply is turned on to supply power to the high-voltage pulse power supply electrode, and the high-voltage pulse power supply electrode is made to release preset pulse liquid phase discharge parameters;

[0073] High-pressure pulse liquid phase discharge is applied to the heavy oil in the production well using preset pulse liquid phase discharge parameters to improve the heavy oil in situ.

[0074] Based on the above embodiment, optionally, the heavy oil viscosity reduction rate and recovery factor determination module is specifically used to:

[0075] Determine the viscosity and recovery rate of heavy oil before high-voltage pulsed liquid discharge;

[0076] Obtain the heavy oil after high-pressure pulse liquid phase discharge in the production well, and determine the viscosity and recovery rate of the heavy oil after high-pressure pulse liquid phase discharge;

[0077] The viscosity reduction rate and recovery rate of heavy oil are determined based on the viscosity and recovery rate of heavy oil before and after high-voltage pulse liquid phase discharge.

[0078] The heavy oil underground pulse liquid phase discharge in-situ reforming device provided in the embodiments of the present invention can execute the heavy oil underground pulse liquid phase discharge in-situ reforming method provided in any of the above-mentioned embodiments of the present invention, and has the corresponding functions and beneficial effects of executing the heavy oil underground pulse liquid phase discharge in-situ reforming method. For detailed processes, please refer to the relevant operations of the heavy oil underground pulse liquid phase discharge in-situ reforming method in the above-mentioned embodiments.

[0079] Figure 4 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. The electronic device 10 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 required herein.

[0080] like Figure 4As 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.

[0081] 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.

[0082] Processor 11 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of 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 other suitable processor, controller, microcontroller, etc. Processor 11 executes the various methods and processes described above, such as the heavy oil underground pulsed liquid phase discharge system and in-situ upgrading method.

[0083] In some embodiments, the heavy oil underground pulse liquid phase discharge system and in-situ upgrading method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as 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 ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the heavy oil underground pulse liquid phase discharge system and in-situ upgrading method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to execute the heavy oil underground pulse liquid phase discharge system and in-situ upgrading method by any other appropriate means (e.g., by means of firmware).

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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).

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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 heavy oil underground pulse liquid phase discharge system, characterized in that: The system includes: a high-voltage pulse power supply, a high-voltage pulse power supply electrode, a cable, an injection well, and a production well; wherein, The high-voltage pulse power supply electrode is connected to the high-voltage pulse power supply through a cable and is grounded through the cable; The high-voltage pulse power supply electrode is installed on the inner wall of the production well to release the preset discharge voltage, discharge frequency and pulse width to perform in-situ reforming of the heavy oil in the production well.

2. The system according to claim 1, wherein: The high-voltage pulse power supply electrode is installed on the inner wall of the production well and specifically includes: If the production well is a vertical wellbore, the high-voltage pulse power supply electrode is installed at the bottom of the vertical wellbore; If the production well is a horizontal wellbore, the high-voltage pulse power supply electrode is installed in the horizontal section of the horizontal wellbore; Wherein, the production wells include vertical wellbores and horizontal wellbores.

3. A heavy oil underground pulse liquid phase discharge in-situ reforming method, characterized in that: The method comprises: During the heavy oil production process, heavy oil and formation water are allowed to flow into the injection well, and preset pulse liquid phase discharge parameters are determined; the pulse liquid phase discharge parameters include preset discharge voltage, discharge frequency and pulse width; Performing high-voltage pulse liquid phase discharge on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters; Obtain heavy oil after high-pressure pulse liquid phase discharge in the production well, and determine the viscosity reduction rate and recovery rate of the heavy oil.

4. The method according to claim 3, characterized in that During the heavy oil production process, the heavy oil and formation water are allowed to flow into the injection well, and preset pulse liquid phase discharge parameters are determined, including: During heavy oil production, heavy oil and formation water are made to flow into the injection well; The produced fluid mixed with heavy oil and formation water was obtained, and the discharge voltage, discharge frequency and pulse width when the viscosity and density of the heavy oil decreased the most were determined through indoor experiments. The discharge voltage, discharge frequency and pulse width were used as the preset pulse liquid phase discharge parameters.

5. The method according to claim 3, characterized in that The method of performing high-voltage pulse liquid phase discharge on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters includes: In the production well, a high-voltage pulse power supply is turned on to supply power to the high-voltage pulse power supply electrode, and the high-voltage pulse power supply electrode is made to release preset pulse liquid phase discharge parameters; High-pressure pulse liquid phase discharge is applied to the heavy oil in the production well using preset pulse liquid phase discharge parameters to improve the heavy oil in situ.

6. The method according to claim 3, characterized in that The method of obtaining the heavy oil after high-pressure pulse liquid phase discharge in the production well and determining the viscosity reduction rate and recovery rate of the heavy oil includes: Determine the viscosity and recovery rate of heavy oil before high-voltage pulsed liquid discharge; Obtain the heavy oil after high-pressure pulse liquid phase discharge in the production well, and determine the viscosity and recovery rate of the heavy oil after high-pressure pulse liquid phase discharge; The viscosity reduction rate and recovery rate of heavy oil are determined based on the viscosity and recovery rate of heavy oil before and after high-voltage pulse liquid phase discharge.

7. A heavy oil underground pulse liquid phase discharge in-situ reforming device, characterized in that: The device comprises: A preset pulse liquid phase discharge parameter determination module is used to allow heavy oil and formation water to flow into the injection well during heavy oil production and determine preset pulse liquid phase discharge parameters; the pulse liquid phase discharge parameters include preset discharge voltage, discharge frequency and pulse width; A heavy oil pulse liquid phase in-situ reforming module is used to perform high-voltage pulse liquid phase discharge on the heavy oil in the production well according to the preset pulse liquid phase discharge parameters; The module for determining the viscosity reduction rate and recovery rate of heavy oil is used to obtain the heavy oil after high-pressure pulse liquid phase discharge in the production well and determine the viscosity reduction rate and recovery rate of the heavy oil.

8. The device according to claim 7, characterized in that The preset pulse liquid phase discharge parameter determination module is specifically used to: During heavy oil production, heavy oil and formation water are made to flow into the injection well; The produced fluid mixed with heavy oil and formation water was obtained, and the discharge voltage, discharge frequency and pulse width when the viscosity and density of the heavy oil decreased the most were determined through indoor experiments. The discharge voltage, discharge frequency and pulse width were used as the preset pulse liquid phase discharge parameters.

9. An electronic device, characterized in that: include: one or more processors; a storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the heavy oil underground pulse liquid phase discharge system described in any one of claims 1-2 and the heavy oil underground pulse liquid phase discharge in-situ upgrading method described in any one of claims 3-6.

10. A storage medium containing computer-executable instructions, characterized in that: When executed by a computer processor, the computer executable instructions are used to execute the heavy oil underground pulse liquid phase discharge system according to any one of claims 1-2 and the heavy oil underground pulse liquid phase discharge in-situ upgrading method according to any one of claims 3-6.

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