@article{YIN Bangtang_789, author = {YIN Bangtang, LIN Yingsong, WANG Zhiyuan, SUN Baojiang, LIU Shujie, SUN Jinsheng, HOU Jian, REN Meipeng, WANG Ning}, title = {A gas kick early detection method outside riser based on Doppler ultrasonic wave during deepwater drilling}, publisher = {Petroleum Exploration and Development}, year = {2020}, journal = {Petroleum Exploration and Development}, volume = {47}, number = {4}, eid = {789}, pages = {789-797}, keywords = {deepwater drilling;riser;Doppler ultrasonic wave;gas-liquid two phase flow;signal analysis;early detection of gas kick}, doi = http://www.cpedm.com/EN/10.11698/PED.2020.04.16 }