Fidelity sampling device applied to shale gas and method for thermal analysis of shale gas

Abstract

The invention discloses a fidelity sampling device applied to shale gas and a method for thermal analysis of shale gas, which are used to solve the problem of the storage environment of the target layer rock sample when the sampling tool is salvaged to the surface during the process of sampling, core transfer and analysis Changes have occurred, causing some gas to escape from the rock sample, which in turn leads to a technical problem of large error in the gas content of the target layer in the analytical results. In the present invention, the fidelity sampler assembly is integrated with a pulling mechanism, a detection component, one end of which is detachably connected to the pulling mechanism; a sampling component, used for sampling to obtain a rock core containing shale gas; a sampling channel, which is used for detecting Formed between the component and the sampling component, the detection component is used to detect the pressure and temperature in the sampling passage; the pressure holding component has an open state and a closed state; the open state is used to realize that the sampling passage can reach the target position.

Description

Technical field [0001] The present invention relates to the field of shale gas sampling and heat parsing equipment, and Background technique [0002] Shale gas is an unconventional gas invalidated in organic shale or mudstone, some of which exists in the formation of natural cracks or pores in the formation, and also have a portion of the surface of the cheese root or clay particles, and it is very small to dissolve The state is present in the cheese root or asphaltene. In order to evaluate the content of underground shale gas, drilling probes are an essential technical means. [0003] In the prior art, it is usually used to obtain rock samples with a rope of rope, and the sample admission rate has been able to meet the test requirements. However, in the process of sampling and core analysis of the transfer, with the sampling tools, the survival environment of the target layer has changed significantly, resulting in a part of the gas from the rock sample, causing the resolution r...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that in the process of sampling and core analysis and transfer in the prior art, the sampling tool is salvaged to the surface, and the storage environment of the rock sample in the target layer has changed, causing a part of the gas to escape from the rock sample, which in turn leads to analysis results The technical problem of not being able to fully and truly reflect the gas content of the target formation, the fidelity sampling device applied to shale gas and the method of thermal analysis of shale gas are proposed

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