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《Natural Gas Industry》 2012-08
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A new technology of vortex dewatering gas recovery in gas wells and its application

Yang Tao1,Yu Shuming2,Yang Hua3,Li Juan3,Li Nan3,Cao Guangqiang3,Wang Yun3(1.Research Institute of Gas Production Engineering,Southwest Oil & Gasfield Company,PetroChina,Guanghan,Sichuan 618300,China;2.Sulige Research Institute of Changqing Oilfield Company,PetroChina,Xi'an,Shaanxi 710021,China;3.Petroleum Exploration & Development Research Institute,PetroChina,Beijing 100083,China)  
Vortex dewatering gas recovery is a new dewatering gas recovery technology first introduced by China National Petroleum Corporation in 2011.It is applicable to both the downhole system of a gas well and the surface gathering system at a field.Hereby,this paper first describes this technology's working principles,technical advantages,component tools,and tripping-in operation in gas wells;then summarizes the achievements,experience,and knowledge gained from the application of this technology in the Songliao and Ordos basins.On this basis,this paper also offers feasible proposals on the further research and test related to this technology.It is concluded that,based on the experience from the pilot tests of Sheng 1-1 and Su 36-4-3 wells,the adaptability,influencing factors,and the key technology of vortex dewatering gas recovery should be further studied under the actual situation of water gas field development.Moreover,the application of the technology should be extended through reasonable well selection,design optimization and setting methods,and optimal combination as well as the study of successful experience from foreign countries.
【CateGory Index】: TE377
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