Fuzzy-ball fluid piston workover technology for natural gas wells
Wang Jinfeng;Zheng Lihui;Zhang Yaogang;Deng Jingen;Zhang Ruxin;State Key Laboratory of Petroleum Resources and Prospecting//China University of Petroleum;Lost Circulation Control Division of National Engineering Laboratory of Oil and Gas Drilling Technology;No.1 Gas Production Plant;PetroChina Changqing Oilfield Company;College of Mechanical and Electronic Engineering;China University of Petroleum;
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