Pore fluid occurrence state obtaining method and device thereof
A technology of occurrence state and pore fluid, which can be used in earth-moving drilling, image data processing, instruments, etc., and can solve the problems of inability to accurately simulate the occurrence state of crude oil and complex crude oil components.
Active Publication Date: 2020-01-03
CHINA UNIV OF PETROLEUM (BEIJING)
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However, the current research on these two parts is limited to theoretical research, and due to the complexity of crude oil components, most of the crude oil molecules are large molecules, and theoretical methods can only simulate C8 molecules, so it is impossible to accurately simulate the occurrence state of real crude oil in pores
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the accompanying drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application.
[0027] see figure 2 , a method for obtaining the occurrence state of pore...
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The invention provides a pore fluid occurrence state obtaining method and a device thereof. The pore fluid occurrence state obtaining method comprises the steps that a pore structure of a real rock core is obtained; according to the pore structure, a microfluidic chip is made, so that the microfluidic chip has a porous network structure capable of simulating the pore structure; crude oil is injected into the porous network structure till the porous network structure is full of the crude oil; the microfluidic chip stands under preset temperature so that the crude oil can form adsorbed phases and bulk phases in the porous network structure under the preset temperature; and the proportional relation of the bulk phases and the adsorbed phases in the porous network structure is obtained so as to obtain the occurrence state of the crude oil. According to the pore fluid occurrence state obtaining method and the device thereof provided by the invention, the occurrence state of fluid in a compact reservoir pore can be accurately disclosed.
Description
technical field [0001] The present application relates to the technical field of reservoir engineering, in particular to a method and a device for obtaining the occurrence state of pore fluid. Background technique [0002] The pore size of tight and shale reservoirs belongs to the micro-nano level, and the reservoir heterogeneity is serious, so the fluid production of tight reservoirs is difficult. [0003] The fluid molecules in the pores of tight reservoirs are divided into two parts due to the force of the pore wall molecules: the adsorption phase near the pore wall surface and the bulk phase away from the pore wall surface. The adsorbed phase fluid is considered to be a fluid that is difficult or even impossible to mobilize. Bulk fluid is readily available or mobile fluid. Quantifying these two parts of fluid can more accurately estimate the recoverable reserves of tight reservoirs, thus providing a theoretical reference for producing tight reservoirs. However, the cu...
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IPC IPC(8): E21B49/00G01N33/24G06T7/00G06T7/62G06T7/90
CPCE21B49/00G01N33/24G06T7/0002G06T2207/10061G06T7/62G06T7/90
Inventor 东晓虎刘一杉侯亚南陈掌星
Owner CHINA UNIV OF PETROLEUM (BEIJING)