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Simulation method, device and storage medium for shale oil-water two-phase flow based on digital core

A digital core and flow simulation technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of not considering the influence and difficult to characterize the two-phase flow capacity of oil and water in shale

Active Publication Date: 2022-07-29
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0003] In related technologies, the shale oil-water two-phase flow simulation method based on digital cores usually uses the pore network model method. However, the current pore network model method does not consider the pore wall surface of the shale oil when simulating the shale oil-water two-phase flow. It is difficult to characterize the flow ability of shale oil-water two-phase in digital core

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  • Simulation method, device and storage medium for shale oil-water two-phase flow based on digital core

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[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0049] For the convenience of subsequent descriptions, the terms involved in the embodiments of the present application are explained here first.

[0050]The finite volume method, also known as the finite volume method, is a numerical algorithm commonly used in computational fluid dynamics. It is presented in the integral form of the conservation equation, which subdivides the solution domain into a finite number of continuous control volumes, applies the conservation equation to each continuous control volume, and constructs a discrete equation by discretizing the integral over finite subregions of fluid flow. At the centroid of each is a compute node on which variable values ​​are computed. The method is applicable to any type of eleme...

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Abstract

The application discloses a shale oil-water two-phase flow simulation method, device and storage medium based on digital core, belonging to the technical field of oil and gas seepage. The method includes acquiring a three-dimensional shale digital core, wherein the three-dimensional shale digital core is a digital core that has been meshed with pores and can distinguish inorganic pore boundaries and organic pore boundaries; establishing the slip length of the three-dimensional shale digital cores model; the slip length model is substituted into the N‑S equation to solve, and the simulation results of shale oil-water two-phase flow based on 3D shale digital cores are obtained. The slip length model is set as the boundary condition of the organic pore boundary, and the slip The displacement-length model is not used as the boundary condition for the inorganic pore boundary. In this method, when shale oil single-phase flow simulation is performed, the pore wall surface limits the slip lengths of shale oil and water phases respectively, so that the simulation results can characterize the flow ability of shale oil and water phases inside the digital core.

Description

technical field [0001] The present application relates to the technical field of oil and gas seepage, in particular to a method, device and storage medium for shale oil-water two-phase flow simulation based on digital cores. Background technique [0002] Shale oil refers to the petroleum resources contained in shale-based shale formations. The research on the exploitation of shale oil is one of the hotspots in the petroleum field. Due to the complex fluid flow mechanism in shale cores, it is difficult to obtain the seepage law of fluids in the tight micropores of shale by experimental means. Therefore, most current researches on shale oil flow simulation are based on digital cores. The digital core is a digital matrix that accurately identifies the skeleton and pores of the real core at a certain resolution, and is the basis for the theoretical study of pore-level microscopic seepage. [0003] In the related art, the shale oil-water two-phase flow simulation method based o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/28G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06F2113/08G06F2119/14
Inventor 孙海段炼姚军
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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