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Single-phase flow simulation method, device and storage medium for shale oil based on digital core

A technology of digital core and flow simulation, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as difficult to characterize the flow capacity of shale oil

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

However, neither the pore network model method nor the direct simulation method has taken into account the different viscosities of the adsorption layers on the pore walls when simulating the single-phase flow of shale oil, and it is difficult to characterize the flow capacity of shale oil inside the core.

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  • Single-phase flow simulation method, device and storage medium for shale oil based on digital core
  • Single-phase flow simulation method, device and storage medium for shale oil based on digital core
  • Single-phase flow simulation method, device and storage medium for shale oil based on digital core

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Embodiment Construction

[0046] 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.

[0047] For the convenience of subsequent descriptions, the terms involved in the embodiments of the present application are explained here first.

[0048] 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 elem...

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Abstract

The application discloses a digital core-based single-phase flow simulation method, device and storage medium for shale oil, 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; The initial viscosity of a layer of grids adjacent to the boundary is expanded by a preset multiple, and the initial viscosity of the remaining grids remains unchanged, and the initial viscosity conditions are obtained. Single-phase flow simulation results of shale oil from digital cores. In this method, when shale oil single-phase flow simulation is performed, the adsorption layer on the pore wall is limited with different viscosities, so that the simulation results can characterize the flow ability of shale oil inside the core.

Description

technical field [0001] The present application relates to the technical field of oil and gas seepage, in particular to a digital core-based single-phase flow simulation method, device and storage medium for shale oil. 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 single-phase flow simulation methods of shale oil based on digi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/28G06F113/08G06F119/14
CPCG06F30/28G06F30/23G06F2113/08G06F2119/14
Inventor 孙海段炼姚军张磊朱光普杨永飞宋文辉刘磊
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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