Automatic quantifying and sampling device for shale gas analysis

A sampling device and gas analysis technology, which is applied in the field of oil and gas exploration and development, can solve the problems of batch sampling, time-consuming and labor-intensive sample collection, etc.

Inactive Publication Date: 2019-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0004] The invention provides an automatic quantitative sampling device for shale analytical gas with different collection parameters, which is us

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  • Automatic quantifying and sampling device for shale gas analysis

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing.

[0029] Such as figure 1 As shown, the present invention provides a kind of automatic quantitative sampling device for shale analytical gas, which includes a sample collection unit 1 and a control unit 2; the sample collection unit 1 includes a three-way valve 11 and a syringe 12, and the three ports of the three-way valve 11 are respectively It is connected with the air inlet 71, the air outlet 72 and the injector 12; the control unit 2 includes a sensor 21 for detecting gas pressure and a controller 22 for controlling the on-off direction of the three-way valve 11, and the controller 22 is connected with the three-way valve respectively. The valve 11 is electrically connected to the sensor 21 ; the sensor 21 is arranged between the air inlet 71 and the air outlet 72 .

[0030] The on-off of the three-way valve 11 can be controlled by the controller 22 , that is, the on-of...

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Abstract

The invention discloses an automatic quantifying and sampling device for shale gas analysis, relates to the technical field of exploration and development of oil and gas, and is used for solving the technical problems in the prior art that sample collection wastes time and labor and sampling cannot be performed in batch. The automatic quantifying and sampling device for shale gas analysis comprises a sample collection unit and a control unit, wherein the control unit can control the connection and disconnection of a three-way valve in the sample collection unit so as to control the connectionand disconnection between an air inlet and an air outlet as well as between the air inlet and an injector, therefore, it can be achieved that a gas sample is automatically quantified, collected and analyzed in batch, thereby meeting natural gas sample collection requirements in the exhaust process in uncertain time periods during shale analysis; manual participation dose not needed in collection in batch, thereby improving the shale gas analysis experiment efficiency and reducing the labor cost in the experiment.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to an automatic quantitative sampling device for shale analytical gas. Background technique [0002] On-site analysis of shale gas is an important source to obtain the geochemical characteristics of shale gas, especially the change characteristics of carbon isotope and natural gas composition in the process of on-site analysis of shale, which can be used to predict the change characteristics of shale gas production capacity and the comparison of parent source characteristics Therefore, in the process of shale analysis, it is generally necessary to collect analysis gas samples regularly for later testing projects such as carbon isotope analysis and natural gas component analysis. [0003] At present, shale desorption gas sampling is mainly collected by saturated brine bottle drainage gas collection method and vacuum gas collection bag collection. Acco...

Claims

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Application Information

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IPC IPC(8): G01N1/24
CPCG01N1/24
Inventor 钱门辉蒋启贵范明李志明杨振恒马媛媛黎茂稳鲍云杰
Owner CHINA PETROLEUM & CHEM CORP
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