Petroleum Exploration and Development  2020, Vol. 47 Issue (4): 789-797    DOI: 10.11698/PED.2020.04.16
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A gas kick early detection method outside riser based on Doppler ultrasonic wave during deepwater drilling
YIN Bangtang1,2, LIN Yingsong1,2, WANG Zhiyuan1,2, SUN Baojiang1,2, LIU Shujie3, SUN Jinsheng1,2, HOU Jian1,2, REN Meipeng3, WANG Ning3
1. Key Laboratory of Unconventional Oil & Gas Development, Ministry of Education, Qingdao 266580, China;
2. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China;
3. CNOOC Research Institute Co. Ltd. , Beijing 100028, China
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