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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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Preventive Measures for Element Sulfur Deposition in Gathering and Transportation Systems of High Sour Gas Field

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Key Words：High sour gas field； Gas gathering and transportation system； Sulfur deposition； Sulfur solvent

Abstract：In high sour gas field development， sulfur will deposit in strata， borehole and surface gas gathering and transportation system due to gas pressure and temperature drop， which will cause blocking and serious corrosion in pipeline and downstream equipment and result in enormous harm.　In order to ensure proper operation of gas gathering and transportation system， it is necessary to reduce sulfur deposition. Analyzed are mechanism and major effect factors of sulfur deposition in gas gathering and transportation system and identified are main deposition positions. Through analysis， it is considered that sulfur solvent injection is the best method for sulfur deposition prevention in practical operation and provided are measures for sulfur deposition prevention. Through comparing soluble sulfur content of physical and chemical solvents， their characteristics and practical application situations， it is found that fluoroalkyl naphthalene with spindle oil as carrier may be recommended for moderate deposition and SULFA-HITECH or DADS sulfur solvent for serious deposition.