Sampling device, system for carrying out field sampling in oil field, method and application thereof

A sampling device and sampling valve technology, which is used in sampling devices, earth-moving drilling, wellbore/well components, etc., to achieve the effect of improving high pressure resistance range, wide applicable pressure range and accurate experimental results

Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

It is especially more accurate for the experimental results of studying the composition changes of high hydrogen sulfide-containing gases

Method used

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  • Sampling device, system for carrying out field sampling in oil field, method and application thereof
  • Sampling device, system for carrying out field sampling in oil field, method and application thereof
  • Sampling device, system for carrying out field sampling in oil field, method and application thereof

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Embodiment Construction

[0046] A sampling device, said device comprising a sampling valve 12, a sampling bottle 11 and a pressure reducing valve,

[0047] The two ends of the sampling bottle 11 are threadedly connected with the sampling valve 12, and the external connection of the sampling valve 12 is an external thread ferrule type connection; the pressure reducing valve is used to decompress the high-pressure gas in the sampling bottle and Sampling; the decompression valve includes an external input sampling port 13, which is connected to an external detector; the external input sampling port 13 is a ferrule-type connection port to eliminate dead ends in the pipeline.

[0048] In order to reduce the problem of excessive pressure in the sampling bottle 11, the pressure relief valve includes a safety valve structure, and the safety valve structure includes a safety valve 6, a gas circuit 14 and an acid gas neutralization pool 15; 4MPa or when the pressure reducing valve fails, the safety valve 6 is o...

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Abstract

The invention belongs to the field of development of oil and gas wells, and relates to a wellhead sampling device, in particular to a wellhead sampler designed for the characteristic of gas field environment containing high content of H2S/CO2, and a sampling system thereof. The sampling device comprises a sampling valve, a sampling bottle and a pressure reducing valve, wherein two ends of the sampling bottle are in threaded connection with the sampling valve; the external connection of the sampling valve is external-thread clamping sleeve type connection; the pressure reducing valve is used for carrying out pressure reduction and sample injection on high-pressure gas in the sampling bottle; the pressure reducing valve comprises an outer conveying sample injection port which is connected with an outer detector; and the outer conveying sample injection port is a clamping sleeve type connection port so as to eliminate dead angles of pipelines. In the invention, the field sampling for analysis is achieved, the result of experimental analysis has good consistency, the device is safe and reliable, and the corrosion resistance to H2S/CO2 is strong. In the gas field sampler disclosed by the invention, the sampling process is safer, the experimental process is more precise and faster, the applicable pressure range is wider, and more safety is achieved.

Description

technical field [0001] The invention belongs to a wellhead sampling device in the field of oil and gas oil well development, and particularly relates to a 2 S / CO 2 A wellhead sampler and its sampling system designed for the characteristics of the gas field environment. Background technique [0002] High H content in oil and gas fields 2 S / CO 2 The gas is highly toxic and corrosive, which poses a great threat to production and people's lives. Correct determination of H in gas wells on site 2 S and CO 2 Concentration is of great significance to corrosion protection in the production process, and it is also very important for the reasonable selection of pipe materials. [0003] In the prior art the sampler is used for high H 2 S / CO 2 Gas sampling presents the following problems: [0004] 1) The component material is easily contaminated by high H content 2 S / CO 2 gas corrosion; [0005] 2) In the past, the gas sampling process had a small diameter and a long connecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/08G01N1/22
Inventor 李孟涛石在虹史爱萍杨立红苏建政王雅茹唐萍
Owner CHINA PETROLEUM & CHEM CORP
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