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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
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028-86014709
028-86014500
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cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Natural Gas Processing Device Renovation Research in KLML Gas Field

Author of the article:Wang Zhihong, Wu Mingou, Liu Hai, Zhang Feng, Cao Honggui, Tao Yulin

Author's Workplace：1.Southwest Petroleum University. College of Chemistry and Chemical Engineering;2.PetroChina Southwest Oil & Gasfield Company Research Institute;3.PetroChina Xinjiang Oilfield Company. l st Gas Production Plant

Key Words：Natural gas processing; Throttle; Dew point control; Propane refrigeration

Abstract：The methods of anti-freezing by injecting ethylene glycol, J-T valve throttling refrigeration and low temperature separation dehydration hydrocarbon process were adopted for natural gas processing devices in KLML gas field. But after start-up of the KLML, features such as big differences in well head pressure, quick decline in pressure, large ranch of gas volume variation became obvious gradually. Some operation parameters deviated from the design value, which led to the fact that the dew point of water and hydrocarbon could not meet requirements and caused severe impact on safe operation of gas processing unit. In view of the above issues, the proposal of "molecular sieve dehydration, plus propane refrigeration and shallow cooling separation" was put forward, which showed more adaptability to the changes in feed gas temperature, pressure and gas volume. The requirements for the development of KLML gas field at middle & later stage were satisfied. After technological transformation, the yield of liquid hydrocarbons increased from 124t/d to 156t/d by 25.81%. The recovery period of static investment was 0.71 a, which was relevant short.