Device and method for testing diffusion performance of oil-gas components in pore medium

Abstract

The invention provides a device and a method for testing diffusion performance of oil-gas components in a pore medium. The testing device comprises a communicating valve, wherein the communicating valve is clamped between testing cores in a core clamping device; the testing cores are arranged on two sides of the communicating valve; the communicating area of the communicating valve is more than or equal to 1 / 2 of the cross sectional area of the testing cores; fluid can be respectively injected into the testing cores which are positioned on the two sides of the communicating valve through the clamping device; and the testing cores positioned on the two sides of the communicating valve are controlled to be communicated with or separated from each other through the communicating valve. Because the communicating valve is arranged between the two testing cores, the initial diffusion moment of the components can be strictly controlled, and the measurement accuracy is improved; static diffusion property measurement under pore medium conditions can be realized; and moreover, the reaction can be stopped and other fluid involved testing research can be carried out according to the design under control of the valve.

Description

technical field [0001] The invention belongs to the technical field of fluid physical property measurement, and mainly relates to the test of the diffusion performance of components in porous media, in particular to an experimental device and an experimental method for the diffusion performance of oil and gas components in porous media. Background technique [0002] The test experiment of the diffusion performance of components between fluids is an important research parameter in major disciplines such as fluid mechanics, seepage mechanics and gas dynamics. The diffusion performance of oil and gas components in porous media is an important basis for reservoir design and an important research parameter for oil and gas field development experiments. [0003] At present, the testing process of component diffusion performance in porous media is complicated, and the operation accuracy is limited by many factors. The progress of this performance testing in the experimental researc...

AI Technical Summary

Problems solved by technology

Unable to measure static diffusion properties

[0005] 2. The test process cannot control the contact timing of the two fluids, so the test process has a certain degree of lag, and it is impossible to test the action process of the early stage of component diffusion

[0007] 4. The test process is continuous and cannot be stopped or introduced into other reactive fluids, which limits the depth of research ideas

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