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Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Analysis on Causes of Blockage in Puguang Gas Field Surface Gathering System and Prevention Measures

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Key Words： High sour gas field； Surface gathering system； Blockage removal measure； Blockage remover； Electric tracing

Abstract： Blockage of instruments， valve groups and manifolds in high sour gas field surface gathering and transportation system may result in not accurate measurements produced by metering devices and too large pressure differential in acid separators， even seriously affect normal functions of production facilities. In ordr to identify causes and influence factors of blockage forming in the above facilities， it is necessary to conduct sampling analysis on gas. Analysis results show that simple substance sulfur particles separated out from natural gas， salt deposits forming in foreign fluid reaction and natural gas hydrate forming in some temperature conditions are the main causes of blockage in Puguang Gas Field surface gathering and transportation system. Therefore， it is very important to tkae such blockage removal or Prevention measures according to different conditions resulting in blockage as blockage remover injection， electric heating device installation， proper selection of acid separators and mist catchers and regular sand washing.
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