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Coal bed gas and methane gas coring and desorption measurement system and method

A measurement system and measurement method technology, applied in sampling devices, analysis materials, instruments, etc., can solve problems such as inaccurate loss gas estimation, low coalbed methane measurement value, test failure, etc., to achieve improved accuracy results, operability and Effects of improved safety performance and improved reliability

Inactive Publication Date: 2015-09-23
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology

[0003] The present invention mainly solves the technical problem of inaccurate estimation of loss gas in the measurement of coalbed methane content existing in the prior art, which leads to low coalbed methane (gas) content measurement value or test failure, and provides a coalbed methane and gas coring method. Desorption measurement system and method

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  • Coal bed gas and methane gas coring and desorption measurement system and method

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Embodiment

[0026] An example of the present invention is figure 1 shown. The integrated system for coring and desorption measurement is composed of three parts: coal sample coring and desorption system, closing and sealing system and supporting assembly system.

[0027] The coal sample coring and desorption system mainly consists of a desorption ball valve 4 , a desorption and coring integrated device 5 , a shearing ball valve 6 and a coal sample positioner 11 . This desorption and coring integrated device 5 is exactly a traditional coring tube and a desorption tank.

[0028] The closing and sealing system consists of a plugging ball 1, a hydraulic assembly 2, a pin 3, a hydraulic bearing 8 and a linkage shearing closing mechanism 9;

[0029] The matching assembly system consists of a drill pipe conversion joint 7, an outer jacket assembly 10 and a special core bit 12.

[0030] The desorption and core integrated device 5 of this embodiment adopts a new titanium steel material, and the...

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Abstract

The invention relates to a coring and desorption measurement system, and belongs to the field of coal bed gas and methane gas measurement, in particular to a coal bed gas and methane gas coring and desorption measurement system and a coal bed gas and methane gas coring and desorption measurement method. The system comprises a desorption and coring integration device, a coal core positioner and a linkage shearing shut-off mechanism, wherein a desorption ball valve and a shearing ball valve are respectively arranged at the two ends of the desorption and coring integration device and are used for sample coring and gas desorption; the coal core positioner is positioned in a coring drill bit, is communicated with the desorption and coring integration device through the shearing ball valve and is used for introducing a coal sample into the desorption and coring integration device; the linkage shearing shut-off mechanism is connected with the desorption ball valve and the shearing ball valve respectively and is used for simultaneously opening or closing the desorption ball valve and the shearing ball valve. Therefore the coal bed gas and methane gas coring and desorption measurement system has the following advantages that the sealing property, the operability and the safety are greatly improved, the measurement of the coal bed gas content (the methane gas content) is more accurate, and the gas content measurement precision is improved.

Description

technical field [0001] The invention relates to a coring desorption measurement system, which belongs to the field of coal bed gas and gas content measurement, and in particular to a coal bed gas and gas coring desorption measurement system and method. Background technique [0002] Coalbed methane (coal mine gas) content measurement is an important task in the fields of coalbed methane resource exploration, development, and comprehensive management of mine gas. Accurately obtaining coalbed methane content data is essential for evaluating coalbed methane resources, formulating coalbed methane resource development plans, and mine mining design. , mine ventilation, and comprehensive management of gas disasters are of great significance; the content of coalbed methane gas also indicates the ability of coalbed methane (gas) to be adsorbed in coal reservoirs, and is also an important parameter for reservoir evaluation. At present, in the existing direct measurement of coalbed meth...

Claims

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Application Information

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IPC IPC(8): G01N7/00G01N1/08
Inventor 景兴鹏黑磊张培河
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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