Analysis tank, detection device and detection system for shale gas content detection

Abstract

The invention provides an analysis tank, a detection device and a detection system for shale gas content detection. The analysis tank comprises a first sub-tank body and a second sub-tank body, wherein N first convex rings are formed in the inner surface of the first sub-tank body; N second convex rings are formed in the second sub-tank body; the first sub-tank body and the second sub-tank body are butted and defined to form a hollow sealing tank for containing a shale sample; the N first convex rings and the N second convex rings are butted one by one to form N partition rib plates used for separating the space between the shale sample and the sealing tank into (N+1) independent cavities; a joint used for communicating the independent cavities to the outer part is formed in the first sub-tank body or the second sub-tank body. According to the analysis tank, the amount of gas released from each part of the shale sample can be respectively measured, so that the gas content values at different positions of the sample are obtained, and the mineability of shale gas is objectively, accurately and comprehensively evaluated.

Description

technical field [0001] The invention relates to geological detection technology, in particular to an analysis tank, a detection device and a detection system for detecting the gas content of mud shale. Background technique [0002] Shale gas is an important unconventional natural gas resource extracted from shale formations. Shale gas exists in mud shale in three states of adsorption, dissociation and dissolution, but the specific location and gas content in mud shale are uncertain, which makes the exploitation of shale gas difficult. [0003] In order to understand the occurrence of shale gas in shale, in the prior art, it is necessary to collect part of the shale at the actual location as a sample, test the sample, and analyze the gas in the shale according to the test results. The availability of shale gas. [0004] In the prior art, the drainage method is generally used to detect mud shale samples. Specifically, put the shale sample into a container filled with satura...

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Problems solved by technology

[0005] However, this method can only measure the amount of gas released from the shale sample as a whole, and then only the gas content of the shale sample as a whole can be obtained accordingly.

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