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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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Development of a Gas Well Foam Agent with Salt Resistance, Methanol Tolerance and Condensate Oil Resistance Ability

Author of the article:Bai Huifang, Li Yinchuan, Chen Yong ,Wang Xiaowei, Liu Zhibin, Deng Qi, Shi Weizhi, Shi Liangliang, He Qianwei

Author's Workplace：1.Oil & Gas Engineering Institute, Southwest Petroleum University; 2.Gas Reservoir Geological and Development Stale Key Laboratory, Southwest Petroleum University; 3.Chuanqing Drilling Corporation, CNPC Chuanqing Drilling Engineering Company

Key Words：Foam agent; Methanol resistance; Condensate oil resistance; Compounding

Abstract：The process of foam drainage gas recovery is usually used to remove effusion at bottom in the middle and later periods of the gas recovery. However wellbore fluid with high salinity, sometimes containing methanol and condensate, will affect the foam agent performance. In order to compound better foam agent, a series of measures have been taken in this article. Firstly, two foam agents is selected from six main foam agents and the best proportion and concentration is determined by evaluation and analysis. Secondly, in order to improve the foaming performance and stability performance of the foam agents, three kinds of additives are joined to increase the foam height and half-life. Thirdly, sensitivity analysis is performed for the compounded foam agent. Finally it is proved in this that the compounded foam agent has excellent salt resistance, temperature tolerance, methanol resistance and resistance to condensate oil.