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Wellhead dry gas C15-C32 molecular marker enrichment method and device

A technology of C15-C32 and molecular markers, which is applied in the direction of measuring devices, analysis materials, sampling, etc., can solve the problem that there are no reports of dibenzothiophene sulfur-containing polycyclic aromatic hydrocarbons, and the total amount of gas cannot reach the molecular markers Test requirements and other issues to achieve the effect of facilitating experimental analysis and transportation

Active Publication Date: 2021-12-17
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, natural gas is usually collected by steel cylinders, but for dry gas with a large drying coefficient, steel cylinders (0.7-1L) The total amount of gas detected is far from meeting the detection requirements for the detection of C11+ molecular markers
And there is no report on the enrichment of C10+ biomarkers and dibenzothiophene sulfur-containing polycyclic aromatic hydrocarbons in dry gas at the wellhead

Method used

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  • Wellhead dry gas C15-C32 molecular marker enrichment method and device
  • Wellhead dry gas C15-C32 molecular marker enrichment method and device
  • Wellhead dry gas C15-C32 molecular marker enrichment method and device

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Embodiment 1

[0031] This embodiment provides a wellhead dry gas C 15 -C 32 Molecular marker enrichment devices, such as figure 1 As shown, the device includes a body 1, an air inlet pipe 2, an air outlet pipe 3, an air inlet hose 4 and an air outlet hose 5;

[0032] The body 1 is provided with a cavity 11 for holding adsorbent, a gas inlet 12 at the top, and a gas outlet 13 at the bottom; 10X molecular sieves are installed in the cavity 11; the gas inlet 12 is used to connect the wellhead to realize the wellhead dry gas passing through the gas inlet 12 enters cavity 11; 10X molecular sieve is the 10X molecular sieve through pretreatment (the 10X molecular sieve that will buy is used dichloromethane: methyl alcohol (98:2) extracts 48 hours and removes impurity in Soxhlet extractor, and in experiment Naturally dry under room conditions, and then bake 10X molecular sieves in a muffle furnace at 550°C for 6 hours to obtain the pretreated 10X molecular sieves); the 10X molecular sieves are us...

Embodiment 2

[0040] This embodiment provides a wellhead dry gas C 15 -C 32 Molecular marker enrichment method

[0041] This method is used to adsorb the dry gas at the wellhead of Gaoshi 3 Well (GS3 Well) in the Anyue Gas Field in the Sichuan Basin. This well produces natural gas from the Deng 4 Member. The natural gas from the Deng 4 Member is over-mature dry gas. % of the toxic gas hydrogen sulfide, the gas component distribution characteristics are shown in Table 1, the collected gas has a drying coefficient of 99.96%, and the conventional component detection is C 2 The + components were not detected except for a small amount of ethane. Therefore, the requirements for enrichment technology are extremely high.

[0042] Table 1 Gas composition of the fourth member of the Sinian Dengying Formation in Well GS3 (unit: mole fraction, 10 -2 )

[0043]

[0044] Among them: drying factor is methane / (methane+ethane+propane+butane+pentane+hexane)×100

[0045] Wellhead dry gas C provided i...

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Abstract

The invention discloses a wellhead dry gas C15-C32 molecular marker enrichment method and device. The device is provided with a body, wherein the body is provided with a cavity for containing an adsorbent, a gas inlet and a gas outlet; a 10X molecular sieve is arranged in the cavity; the gas inlet is used for being connected with a wellhead so that wellhead dry gas can enter the cavity through the gas inlet; the 10X molecular sieve is used for adsorbing C15-C32 molecular markers in the dry gas entering the cavity; and the gas outlet is used for discharging the dry gas adsorbed by the 10X molecular sieve out of the cavity. The wellhead dry gas C15-C32 molecular marker enrichment method comprises the following steps: introducing wellhead dry gas into the 10X molecular sieve for adsorption, so that the C15-C32 molecular marker in the dry gas is enriched in the 10X molecular sieve. According to the device, the wellhead dry gas C15-C32 molecular marker can be rapidly and conveniently enriched, and the enriched molecular marker can be conveniently analyzed in a laboratory.

Description

technical field [0001] The invention relates to a wellhead dry gas C 15 -C 32 Molecular marker enrichment method and device. Background technique [0002] The Sichuan Basin is one of the major marine oil-gas-bearing basins in my country, with abundant deep oil-gas resources. Since 2009, a major breakthrough has been made in the natural gas exploration of the Sinian Dengying Formation in the Leshan-Longnüsi paleo-uplift in the middle of the basin, with an area of ​​nearly 7500km 2 (Zou Caicai, Du Jinhu, Xu Chunchun, etc. Formation and distribution of Sinian-Cambrian super-large gas fields, resource potential and exploration discoveries in the Sichuan Basin. Petroleum Exploration and Development, 2014, 41(3): 278-293; Zheng Ping, Shi Yuhua, Zou Chunyan et al. Gas source analysis of Dengying Formation and Longwangmiao Formation in Gaoshiti-Moxi area. Natural Gas Industry, 2014,34(3):50-54). The Sinian Dengying Formation gas pool is the oldest marine carbonate gas pool in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/40
CPCG01N1/405
Inventor 方镕慧洪海涛李美俊田兴旺刘鹏王文之周刚刘冉
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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