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Novel on-site desorption test device for shale gas

A test device and shale gas technology, applied in the direction of analyzing materials, instruments, etc., can solve the problems of inaccurate data, inability to objectively reflect the gas-bearing properties of shale, and ineffective migration of methane gas, and reduce the measurement Error, clever design, simple structure effect

Pending Publication Date: 2018-10-12
龚大建
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  • Application Information

AI Technical Summary

Problems solved by technology

Shale cores contain shale components, cores swell with water, and solid particles are clogged, which prevents methane gas from being effectively transported out of the cores, resulting in inaccurate data from on-site desorption experiments of cores, which cannot objectively reflect the true gas content of shale sex

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  • Novel on-site desorption test device for shale gas

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Embodiment Construction

[0027] Below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of a novel shale gas on-site desorption test device proposed according to the present invention will be described in detail as follows.

[0028] See attached figure 1 , a new type of shale gas on-site desorption test device provided by the present invention mainly includes an air hammer 1, a desorption tank 6 and a pressure cap 4 of the desorption tank; Placed on the bottom surface of the air hammer bracket 2, the desorption tank pressure cap 4 and the desorption tank 6 are threaded for sealing fit; the hammer body 5 below the air hammer 1 is matched with the air hammer guide rail 12, and the middle and lower part of the air hammer guide rail 12 is provided with holes. Air hammer guide rail 12 bottom is provided with spring 8, and liquid level sensor 15 is installed at the bottom of desorption tank 6; There is an electric heater 11...

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Abstract

The invention discloses a novel on-site desorption test device for shale gas, relates to the technical field of measurement, and is characterized in that an air hammer (1) is fixed by an air hammer support (2), a desorption tank (6) is placed on the bottom surface of the air hammer support (2), and a desorption tank press cap (4) and the desorption tank (6) are in seal fit in a threaded manner; aspring (8) is arranged at the bottom of an air hammer guide rail (12), and a rock core (7) is placed on the spring (8); a liquid level sensor (15) is arranged at the bottom of the desorption tank (6);an oil feed hole (13) is arranged at the lower part of the side face of the desorption tank (6); an electric heater (11) is arranged at the inner side face of the desorption tank (6); the top surfaceof the desorption tank press cap (4) is provided with a sampling port (9), an oil drain hole (3) and a pressure sensor (10). The novel on-site desorption test device for shale gas has the advantagesof simple structure and ingenious design, and can effectively reduce measurement errors caused by a low pressure coefficient in the rock core and obtain real gas content data.

Description

technical field [0001] The invention relates to the technical field of measurement and measurement, in particular to a novel shale gas on-site desorption test device. Background technique [0002] In the past two decades, the development of shale gas in the United States has achieved great success, which has completed the energy revolution and changed the world's energy pattern. The total amount of shale gas resources in China is 134 trillion cubic meters, ranking first in the world. With the exploration and development of Sinopec in Jiaoshiba, Fuling, Chongqing and CNPC in Longmaxi Formation shale gas exploration and development in Changning and Weiyuan, Sichuan, the development and utilization of shale gas in my country ranks second in the world. [0003] At present, the international general evaluation of shale gas resources mainly includes preservation conditions (geological structure characteristics), shale gas content, high-quality shale thickness, TOC (total organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/14
CPCG01N7/14
Inventor 龚大建
Owner 龚大建
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