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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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Study on Pigging of Gas Gathering and Transpiration Trunk Lines in Changbei Gas Field

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Key Words： Changbei Gas Field； Gas-liquid gathering process； Pigging； Slug simulation； Unconventional pigging

Abstract： Well cluster mode and gas-liquid two-phase gathering process are used in Changbei Gas Field surface engineering project. Liquid holdup in gathering trunk pipeline is relatively huge and no slug catcher is available in CPF， accordingly， high operational risk exists in the pigging operation of gas gathering trunk pipeline. It is necessary to research the pigging operation of gas gathering and transportation trunk pipelines in order to assure safety of the pipelines.Before actual pigging operation， two-phase fluid simulation software OLGA was used to simulate the pigging slug volume and prepare a detailed pigging operation scheme and reasonable pigging suggestion is resulted from detailed comparison between actual Changbei north trunk pipeline pigging operation data and software simulation data. For Changbei gathering system， unconventional pigging method is useful for reducing pigging operation risk. Consequently， unconventional pigging method and experience are worthy for popularization in the pigging operation of gas-liquid gathering and transportation system.