Coalbed gas automatic adsorption/desorption experiment device

Abstract

The invention relates to the field of the coalbed gas adsorption / desorption quantity test analysis. The coal samples can be orderly arranged in different units through a coal sample filling positioning module, the desorption and adsorption uniformity on the coal sample can be improved, and the experiment precision is guaranteed; a vertical connecting plate one and a vertical connecting plate two of the device are in buckling-detaching arrangement, so that the coal sample can be conveniently filled and arranged, and the vertical arrangement can enable the internal airflow circulation to be uniform and stable, and the experiment result is improved. The temperature control is performed on fracturing fluid flowing in an adsorption / desorption mechanism through a fracturing fluid temperature controller, and the temperature control is performed on the coalbed gas flowing in the adsorption / desorption mechanism through a coalbed gas temperature controller, a reference cylinder and a sample cylinder are fixed through the positioning seat; after the experiment is finished, the reference cylinder and the sample cylinder can slide out along a sliding chute, the reference cylinder and the samplecylinder are taken out so as to be cleaned conveniently and fast; and the convenience is provided for a user.

Description

technical field [0001] The invention relates to the field of coalbed methane adsorption and desorption test analysis, in particular to a coalbed methane automatic adsorption and desorption experiment device. Background technique [0002] Coalbed methane is a very considerable natural gas. Compared with the characteristics of conventional oil and natural gas reservoirs, its reservoir characteristics have many characteristics: the reservoir is a three-phase coexistence of coal, gas and water, and there are double pores composed of micropores and natural fractures. system, the micropore system is very developed, and the adsorption capacity is very strong. The migration of coalbed methane includes a complex process of desorption-diffusion-seepage. Therefore, the research on coalbed methane mining and gas injection suitable for the conditions of low pressure, low permeability and low saturation of coal seams in my country should be accelerated. Production stimulation theory and res...

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Problems solved by technology

[0003] A Chinese patent discloses an automated coalbed methane adsorption and desorption experiment device (authorized announcement number CN206489028U). This patented technology can more realistically simulate the coal underground reservoir environment in the laboratory, and conduct coalbed methane adsorption and desorption experiments in this environment. To provide technical support for the in-depth study of the adsorption and desorption mechanism of coalbed methane, but the temperature of coalbed methane cannot be controlled, the experimental data is not accurate enough, and it is inconvenient to clean the sample cylinder. Moreover, in the current experiment, the sample filling is out of order, In this way, during adsorption and desorption, it is difficult for the coal sample to achieve the effect of uniformity, which affects the quality of the experiment.

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