Optimal selection method for low-permeability heterogeneous oil reservoir composite profile control and flooding system and related equipment

Abstract

The invention discloses a low-permeability heterogeneous oil reservoir composite profile control and flooding system optimization method and related equipment, belongs to the technical field of oilfield development, and provides a systematic process which comprises the following steps of: starting from acquiring oilfield data, judging the type of a reservoir to obtain the permeability or fracture width of the reservoir, and determining the permeability or fracture width of the reservoir; and a suitable profile control and displacement technology is selected according to different reservoir permeability or crack widths. The method ensures that the selection of the profile control and displacement technology is based on deep understanding of oil reservoir characteristics, so that the profile control and displacement effect is improved, the exploitation cost is reduced, three reservoir types (a porous reservoir, a pore-fractured reservoir and a fractured reservoir) are clearly distinguished, and the method is suitable for mass production. The method for obtaining the reservoir permeability or the crack width according to the reservoir type enables selection of the profile control and displacement technology to be more specific and accurate. For a porous reservoir and a pore-fractured reservoir, the permeability is a key parameter; and for a fractured reservoir, the crack width is more critical. The distinguishing is beneficial to improving the pertinence and effectiveness of profile control and displacement.

Description

A method for optimizing a composite regulation and drive system for low-permeability heterogeneous reservoirs and related equipment Technical Field

[0001] This invention belongs to the field of oilfield development technology, specifically a method for optimizing a composite regulation and drive system for low-permeability heterogeneous reservoirs and related equipment. Background Technology

[0002] Typically, oilfields are developed in three stages after discovery: primary recovery, secondary recovery, and tertiary recovery. Primary recovery relies mainly on underground natural energy for extraction, resulting in a low recovery rate. Secondary recovery supplements energy by injecting water or gas into the oil reservoir to improve the recovery rate, but a large amount of crude oil remains underground. Tertiary recovery utilizes physical and chemical technologies to extract the remaining underground oil, further improving the recovery rate.

[0003] In recent years, with the continuous increase in development efforts in various oilfields, the inter-layer contradictions between the development of new formations and old formations have become increasingly prominent, placing higher demands on water shut-off and profile control. To improve development efficiency, it is necessary to carry out targeted plugging and profile control operations based on the development characteristics of different reservoirs, forming a long-term reliable and high-intensity plugging and profile control system to reduce the impact of water and gas channeling in high-permeability layers.

[0004] In low-permeability heterogeneous oil reservoirs, due to the strong heterogeneity of the reservoir, water injection often leads to the injected water flowing along the high-permeability zone to the production well, resulting in inefficient circulation of the injected water and greatly reducing the recovery rate of crude oil. There is no suitable optimization method for the oil displacement system. Therefore, in order to recover this part of the crude oil, it is necessary to study and develop new enhanced oil recovery technologies.

[0005] The existing related technologies are as follows: (1) Patent application number 201910812301.7 (a method for optimizing the ratio of heterogeneous chemical flooding system), which proposes a method for optimizing the ratio of viscoelastic particle flooding agent and polymer in heterogeneous chemical flooding system, but does not involve heterogeneous reservoirs.

[0006] (2) Patent application number 202010776283.4 (A method for evaluating the compatibility of polymer microspheres with reservoirs) proposes a method for evaluating the compatibility of polymer microspheres with reservoirs, but it only applies to polymer microsphere systems and does not involve heterogeneous reservoirs.

[0007] (3) Patent application number 202211729735.9 (A method for determining the optimal numerical indicator chart of heavy oil foam regulation and drive technology parameters) proposes a method for determining the optimal foam regulation and drive technology parameters using an indicator chart. The optimal regulation and drive timing can be determined based on the crude oil viscosity of the heavy oil reservoir and the pre-designed total foam injection volume, but it is mainly for heavy oil reservoirs and foam regulation and drive.

[0008] (4) Patent application number 202310178328.1 (A method for determining the map for optimizing the foam regulation and drive system of vertical heterogeneous heavy oil reservoirs) introduces a method for determining the map for optimizing the foam regulation and drive system of vertical heterogeneous heavy oil reservoirs. It introduces the vertical permeability ratio of heavy oil reservoirs, but mainly targets heavy oil reservoirs.

[0009] In summary, existing technologies mainly target heavy oil reservoirs, but there are no effective optimization methods for heterogeneous reservoirs. Summary of the Invention

[0010] This invention provides a method and related equipment for optimizing a composite moderating and driving system in low-permeability heterogeneous reservoirs, solving the problem of difficulty in optimizing the moderating and driving system in low-permeability heterogeneous reservoirs.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a method for optimizing a composite regulation and drive system for low-permeability heterogeneous reservoirs, comprising: acquiring oilfield data; determining the reservoir type based on the oilfield data; obtaining the reservoir permeability or fracture width based on the reservoir type; and selecting regulation and drive technology based on the reservoir permeability or fracture width.

[0012] Preferably, the reservoir type includes porous reservoirs, porous-fractured reservoirs, and fractured reservoirs.

[0013] Preferably, the process of obtaining reservoir permeability or fracture width based on reservoir type is as follows: if the reservoir type is a porous reservoir or a pore-fractured reservoir, the reservoir permeability is obtained directly; if the reservoir type is a fractured reservoir, the reservoir fracture width is obtained.

[0014] Preferably, when the fracture width cannot be directly obtained from a fractured reservoir, the reservoir permeability is obtained first, and then the reservoir permeability is converted into the fracture width.

[0015] Preferably, the formula for converting reservoir permeability into fracture width is:

[0016] Where: K is the permeability, μm 2 ; Φ is the crack porosity, which has no unit; b is the crack width, in μm.

[0017] Preferably, when the reservoir type is a porous reservoir or a pore-fractured reservoir, the selection of the moderating technology based on the reservoir permeability is as follows: for porous reservoirs with a permeability of less than 50 mD, microsphere moderating technology is used; for porous reservoirs with a permeability of 50-200 mD, "foam + microsphere" moderating technology is used; for porous reservoirs with a permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended; for porous-fractured reservoirs with a permeability of less than 50 mD, foam moderating technology is used; for porous-fractured reservoirs with a permeability of 50-200 mD, "microsphere foam" moderating technology is used; and for porous-fractured reservoirs with a permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended.

[0018] Preferably, when the reservoir type is a fractured reservoir, the moderating technology is selected according to the reservoir permeability. Specifically, for fractured reservoirs with fracture width less than 100 μm, the moderating technology is "foam + microspheres" or "PEG + microspheres". For fractured reservoirs with fracture width of 100-300 μm, the moderating technology is "crosslinking agent reinforced foam + microspheres". For fractured reservoirs with fracture width greater than 300 μm, the moderating technology is "bulk expanded particles + microspheres" or "gel + microspheres".

[0019] A system for optimizing a composite regulation and drive system in a low-permeability heterogeneous reservoir includes: a first data acquisition module for acquiring oilfield data; a judgment module for judging the reservoir type based on the oilfield data; a second data acquisition module for acquiring reservoir permeability or fracture width based on the reservoir type; and a selection module for selecting regulation and drive technology based on reservoir permeability or fracture width.

[0020] Preferably, the reservoir type includes porous reservoirs, porous-fractured reservoirs, and fractured reservoirs.

[0021] Preferably, the process of obtaining reservoir permeability or fracture width based on reservoir type is as follows: if the reservoir type is a porous reservoir or a pore-fractured reservoir, the reservoir permeability is obtained directly; if the reservoir type is a fractured reservoir, the reservoir fracture width is obtained.

[0022] Preferably, when the fracture width cannot be directly obtained from a fractured reservoir, the reservoir permeability is obtained first, and then the reservoir permeability is converted into the fracture width.

[0023] Preferably, the formula for converting reservoir permeability into fracture width is:

[0024] Where: K is the permeability, μm 2 ; Φ is the crack porosity, which has no unit; b is the crack width, in μm.

[0025] Preferably, when the reservoir type is a porous reservoir or a pore-fractured reservoir, the selection of the moderating technology based on the reservoir permeability is as follows: for porous reservoirs with a permeability of less than 50 mD, microsphere moderating technology is used; for porous reservoirs with a permeability of 50-200 mD, "foam + microsphere" moderating technology is used; for porous reservoirs with a permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended; for porous-fractured reservoirs with a permeability of less than 50 mD, foam moderating technology is used; for porous-fractured reservoirs with a permeability of 50-200 mD, "microsphere foam" moderating technology is used; and for porous-fractured reservoirs with a permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended.

[0026] Preferably, when the reservoir type is a fractured reservoir, the moderating technology is selected according to the reservoir permeability. Specifically, for fractured reservoirs with fracture width less than 100 μm, the moderating technology is "foam + microspheres" or "PEG + microspheres". For fractured reservoirs with fracture width of 100-300 μm, the moderating technology is "crosslinking agent reinforced foam + microspheres". For fractured reservoirs with fracture width greater than 300 μm, the moderating technology is "bulk expanded particles + microspheres" or "gel + microspheres".

[0027] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of a preferred method for a composite regulation and drive system in a low-permeability heterogeneous reservoir.

[0028] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of an optimal method for a composite regulation and drive system in a low-permeability heterogeneous reservoir.

[0029] Compared with existing technologies, this invention has the following advantages: This invention proposes an optimal method for a composite regulation and drive system in low-permeability heterogeneous reservoirs, providing a systematic process. Starting with acquiring oilfield data, it determines the reservoir type, then obtains the reservoir permeability or fracture width, and selects a suitable regulation and drive technology based on the different reservoir permeability or fracture widths. This method ensures that the selection of regulation and drive technology is based on a deep understanding of reservoir characteristics, thereby improving the regulation and drive effect and reducing extraction costs.

[0030] Furthermore, three reservoir types (porosity, pore-fracture, and fractured reservoirs) are clearly distinguished, making the subsequent selection process more precise. Different types of reservoirs have different physical and chemical properties; therefore, this classification helps in selecting the most suitable regulation and displacement technology.

[0031] The method of obtaining reservoir permeability or fracture width based on reservoir type allows for more specific and precise selection of modulated water displacement techniques. For porous and pore-fractured reservoirs, permeability is a key parameter; while for fractured reservoirs, fracture width is more critical. This distinction helps improve the targeting and effectiveness of modulated water displacement.

[0032] When fracture width cannot be directly obtained from fractured reservoirs, the selection of flood control techniques can still be accurately made by obtaining reservoir permeability and converting it into fracture width. This method expands its applicability, enabling effective flood control even in the absence of direct fracture width data. Attached Figure Description

[0033] Figure 1 is a flowchart of an optimal method for a composite regulation and drive system in a low-permeability heterogeneous reservoir according to an embodiment of the present invention.

[0034] Figure 2 is a diagram showing the selection of different types of reservoir plugging technologies according to embodiments of the present invention.

[0035] Figure 3 is a graph showing the fitting prediction calculation in an embodiment of the present invention.

[0036] Figure 4 is a preferred system block diagram of a composite regulation and drive system for low-permeability heterogeneous reservoirs according to an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] As shown in Figure 1, an embodiment of the present invention provides a method for optimizing a composite regulation and drive system for low-permeability heterogeneous reservoirs, comprising: S101 acquiring oilfield data; S102 determining the reservoir type based on the oilfield data; S103 acquiring the reservoir permeability or fracture width based on the reservoir type; and S104 selecting regulation and drive technology based on the reservoir permeability or fracture width.

[0042] The reservoir types include porous reservoirs, porous-fractured reservoirs, and fractured reservoirs.

[0043] The clear distinction between three reservoir types (porosity, pore-fracture, and fractured reservoirs) allows for more precise selection in subsequent processes. Different types of reservoirs possess varying physical and chemical properties; therefore, this classification aids in selecting the most suitable regulation and diversion technology.

[0044] The details for obtaining reservoir permeability or fracture width based on reservoir type are as follows: If the reservoir type is a porous reservoir or a porous-fractured reservoir, the reservoir permeability is obtained directly; if the reservoir type is a fractured reservoir, the reservoir fracture width is obtained.

[0045] The method of obtaining reservoir permeability or fracture width based on reservoir type allows for more specific and precise selection of modulated water displacement techniques. For porous and pore-fractured reservoirs, permeability is a key parameter; while for fractured reservoirs, fracture width is more critical. This distinction helps improve the targeting and effectiveness of modulated water displacement.

[0046] When the fracture width cannot be directly obtained for fractured reservoirs, the reservoir permeability is obtained first, and then the reservoir permeability is converted into the fracture width.

[0047] When fracture width cannot be directly obtained from fractured reservoirs, the selection of flood control techniques can still be accurately made by obtaining reservoir permeability and converting it into fracture width. This method expands its applicability, enabling effective flood control even in the absence of direct fracture width data.

[0048] The formula for converting reservoir permeability into fracture width is:

[0049] Where: K is the permeability, μm 2 ; Φ is the crack porosity, which has no unit; b is the crack width, in μm.

[0050] When the reservoir type is a porous reservoir or a pore-fractured reservoir, the specific selection of the moderating technology based on the reservoir permeability is as follows: For porous reservoirs with permeability less than 50 mD, microsphere moderating technology is used; for porous reservoirs with permeability of 50-200 mD, "foam + microsphere" moderating technology is used; for porous reservoirs with permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended; for porous-fractured reservoirs with permeability less than 50 mD, foam moderating technology is used; for porous-fractured reservoirs with permeability of 50-200 mD, "microsphere foam" moderating technology is used; and for porous-fractured reservoirs with permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended.

[0051] When the reservoir type is fractured reservoir, the moderating technology is selected according to the reservoir permeability. Specifically, for fractured reservoirs with fracture width less than 100 μm, the moderating technology of "foam + microspheres" or "PEG + microspheres" is used; for fractured reservoirs with fracture width of 100-300 μm, the moderating technology of "crosslinking agent reinforced foam + microspheres" is used; and for fractured reservoirs with fracture width greater than 300 μm, the moderating technology of "bulk expanded particles + microspheres" or "gel + microspheres" is used.

[0052] In addition, when selecting plugging agents, it is recommended to prioritize gel-reinforced foam systems for reservoir plugging, provided that the reservoir plugging requirements are met.

[0053] Finally, using sand-filled models, fractured cores, and sand-filled models with microfractures to simulate porosity, fractured, and pore-fractured reservoirs, performance evaluation experiments on plugging and improving oil displacement efficiency were conducted. The effects of composite gel plugging agents and gel-reinforced foam on the regulation and displacement performance of several types of reservoirs were studied. Based on this, a selection chart for plugging technologies for different types of reservoirs was established, as shown in Figure 2.

[0054] To address the characteristics of heterogeneous oil reservoirs, experimental evaluations were conducted to study the plugging and shut-off capabilities and adaptability of different systems to different reservoirs, and a chart was established to optimize and match plugging and shut-off technologies for different types of reservoirs.

[0055] This method does not require the establishment of different reservoir models, which greatly reduces the workload of reservoir model establishment and corresponding scheme prediction in numerical simulation. It is simple, easy to implement, highly reliable, and improves work efficiency.

[0056] As can be seen from the figures, foam and microspheres have good modulating and driving effects on porous and pore-fracture reservoirs with permeability below 50 mD, while bulk-swelling particles and polymer gels are suitable for sealing fractured reservoirs.

[0057] The optimized composite gel system and gel-reinforced foam system improve oil displacement efficiency by more than 13% and achieve a plugging rate of over 95% compared to single plugging agent systems. Under the condition of meeting plugging requirements, the gel-reinforced foam system is recommended as the preferred choice for modulated displacement.

[0058] Another embodiment of the present invention provides a method for optimizing a composite regulation and drive system for low-permeability heterogeneous reservoirs, including: (1) data of a certain low-permeability reservoir

[0059] (2) Calculation steps are based on the conversion formula:

[0060] The permeability of reservoir A is 192,200–281,667 μm. 2 =192~282mD. The system was compared and selected according to the pattern of the chart. The bulked particles and polymer microspheres were selected. The data shown in Figure 3 was obtained by fitting and prediction calculation.

[0061] It can be seen that the selected composite regulation and displacement not only reduced the natural decline of the reservoir, but also further decreased the water cut while increasing oil production, resulting in good water control and oil stabilization effects. This process does not require the establishment of different reservoir models, thus improving work efficiency.

[0062] Another embodiment of the present invention provides a preferred system for a composite regulation and drive system in low-permeability heterogeneous reservoirs, comprising: a first data acquisition module for acquiring oilfield data; a judgment module for judging the reservoir type based on the oilfield data; a second data acquisition module for acquiring reservoir permeability or fracture width based on the reservoir type; and a selection module for selecting regulation and drive technology based on reservoir permeability or fracture width.

[0063] The reservoir types include porous reservoirs, porous-fractured reservoirs, and fractured reservoirs.

[0064] The details for obtaining reservoir permeability or fracture width based on reservoir type are as follows: If the reservoir type is a porous reservoir or a porous-fractured reservoir, the reservoir permeability is obtained directly; if the reservoir type is a fractured reservoir, the reservoir fracture width is obtained.

[0065] When the fracture width cannot be directly obtained for fractured reservoirs, the reservoir permeability is obtained first, and then the reservoir permeability is converted into the fracture width.

[0066] The formula for converting reservoir permeability into fracture width is:

[0067] Where: K is the permeability, μm 2 ; Φ is the crack porosity, which has no unit; b is the crack width, in μm.

[0068] When the reservoir type is a porous reservoir or a pore-fractured reservoir, the specific selection of the moderating technology based on the reservoir permeability is as follows: For porous reservoirs with permeability less than 50 mD, microsphere moderating technology is used; for porous reservoirs with permeability of 50-200 mD, "foam + microsphere" moderating technology is used; for porous reservoirs with permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended; for porous-fractured reservoirs with permeability less than 50 mD, foam moderating technology is used; for porous-fractured reservoirs with permeability of 50-200 mD, "microsphere foam" moderating technology is used; and for porous-fractured reservoirs with permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended.

[0069] When the reservoir type is fractured reservoir, the moderating technology is selected according to the reservoir permeability. Specifically, for fractured reservoirs with fracture width less than 100 μm, the moderating technology of "foam + microspheres" or "PEG + microspheres" is used; for fractured reservoirs with fracture width of 100-300 μm, the moderating technology of "crosslinking agent reinforced foam + microspheres" is used; and for fractured reservoirs with fracture width greater than 300 μm, the moderating technology of "bulk expanded particles + microspheres" or "gel + microspheres" is used.

[0070] An embodiment of the present invention provides a terminal device. This terminal device includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps in the various method embodiments described above. Alternatively, when the processor executes the computer program, it implements the functions of each module / unit in the various device embodiments described above.

[0071] The computer program can be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention.

[0072] The terminal device may be a desktop computer, laptop, handheld computer, or cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0073] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0074] The memory can be used to store the computer program and / or module. The processor implements various functions of the terminal device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0075] If the modules / units integrated into the terminal device are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0076] Although embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art, guided by the specification, can make many other modifications without departing from the scope of the claims of the present invention, and all of these modifications are within the scope of protection of the present invention.

Claims

1. A method for optimizing a composite regulation and drive system in low-permeability heterogeneous reservoirs, characterized in that, include: Acquire oilfield data; determine reservoir type based on oilfield data; obtain reservoir permeability or fracture width based on reservoir type; Select the modulated flow technology based on the reservoir permeability or fracture width.

2. The preferred method for a composite regulation and drive system in a low-permeability heterogeneous reservoir according to claim 1, characterized in that, The reservoir types include porous reservoirs, porous-fractured reservoirs, and fractured reservoirs.

3. The preferred method for a composite regulation and drive system in a low-permeability heterogeneous reservoir according to claim 2, characterized in that, The details for obtaining reservoir permeability or fracture width based on reservoir type are as follows: If the reservoir type is a porous reservoir or a porous-fractured reservoir, the reservoir permeability is obtained directly; if the reservoir type is a fractured reservoir, the reservoir fracture width is obtained.

4. The preferred method for a composite regulation and drive system in a low-permeability heterogeneous reservoir according to claim 3, characterized in that, When the fracture width cannot be directly obtained for fractured reservoirs, the reservoir permeability is obtained first, and then the reservoir permeability is converted into the fracture width.

5. The preferred method for a composite regulation and drive system in a low-permeability heterogeneous reservoir according to claim 4, characterized in that, The formula for converting reservoir permeability into fracture width is: Where: K is the permeability, μm 2 ; Φ is the crack porosity, which has no unit; b is the crack width, in μm.

6. The preferred method for a composite regulation and drive system in a low-permeability heterogeneous reservoir according to claim 2, characterized in that, When the reservoir type is a porous reservoir or a pore-fractured reservoir, the specific selection of the moderating technology based on the reservoir permeability is as follows: For porous reservoirs with permeability less than 50 mD, microsphere moderating technology is used; for porous reservoirs with permeability of 50-200 mD, "foam + microsphere" moderating technology is used; for porous reservoirs with permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended; for porous-fractured reservoirs with permeability less than 50 mD, foam moderating technology is used; for porous-fractured reservoirs with permeability of 50-200 mD, "microsphere foam" moderating technology is used; and for porous-fractured reservoirs with permeability greater than 200 mD, "PEG + microsphere" moderating technology is recommended.

7. The preferred method for a composite regulation and drive system in a low-permeability heterogeneous reservoir according to claim 1, characterized in that, When the reservoir type is fractured reservoir, the moderating technology is selected according to the reservoir permeability. Specifically, for fractured reservoirs with fracture width less than 100 μm, the "foam + microsphere" or "PEG + microsphere" moderating technology is used; for fractured reservoirs with fracture width of 100-300 μm, the "crosslinking agent reinforced foam + microsphere" moderating technology is used; and for fractured reservoirs with fracture width greater than 300 μm, the "bulk expanded particles + microsphere" or "gel + microsphere" moderating technology is used.

8. A preferred system for a composite regulation and drive system in low-permeability heterogeneous reservoirs, characterized in that, include: First data acquisition module: used to acquire oilfield data; Judgment module: used to determine reservoir type based on oilfield data; The second data acquisition module is used to obtain reservoir permeability or fracture width based on reservoir type; the selection module is used to select the modulation and diversion technology based on reservoir permeability or fracture width.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the preferred method for a composite regulation and drive system for low-permeability heterogeneous reservoirs as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the preferred method for a composite regulation and drive system for low-permeability heterogeneous reservoirs as described in any one of claims 1 to 7.

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