Shale gas content testing device and testing method

Abstract

The invention discloses a shale gas content measurement device and a shale gas content measurement method. The measurement device comprises a fixed base, a driving mechanism, a sealed sample crushing cylinder, a crushing combined tool and a seal cover, wherein the driving mechanism is connected to the fixed base; a cylinder body of the seal sample crushing cylinder is connected with the fixed base and is internally provided with a stirring shaft connected with the driving mechanism; the stirring shaft rotates under the driving of the driving mechanism; the crushing combined tool is connected to the stirring shaft of the sealed sample crushing cylinder and is matched for sample rough crushing and fine crushing; the seal cover is arranged at the opening of the seal sample crushing cylinder above the crushing combined tool and is connected with the sealed sample crushing cylinder in a sealed mode. The testing device cam seal, crush and degas the whole rock core or rock sample in an exploration field or a laboratory, so that the sample gas content can be obtained rapidly and accurately.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploration and development, and in particular relates to a shale gas content testing device. Background technique [0002] The experimental techniques for shale gas content analysis mainly include direct test method, desorption test method, and isothermal adsorption simulation method. Among them, the desorption test method is the most commonly used experimental method for shale gas content measurement. However, at present, there is no specific method and technology industry standard at home and abroad. It mainly refers to the measurement method proposed in the coalbed methane industry, and then applies the test method and parameters to the shale gas content test after modifying the experimental method and parameters in combination with the characteristics of shale. At the same time, the corresponding test instruments are also developed by various research units according to the needs, and th...

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Problems solved by technology

[0007] The disadvantage of the existing technology is that none of the existing equipment can meet the needs of quickly obtaining shale gas content

Although the device for on-site desorption testing of shale gas uses the entire core sample, since the core is not damaged during the desorption process, the desorption cycle is long and cannot meet the needs of rapid on-site testing

However, the device for testing shale residual gas must first coarsely crush the core sample and then put it into the crushed sample sealed tank for crushing and degassing. Gas escapes, which can make actual tests of shale gas content inaccurate

Therefore, the existing technology devices cannot meet the fast and accurate testing requirements of the shale gas exploration and development site

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