A gas kick early detection method outside riser based on Doppler ultrasonic wave during deepwater drilling |
YIN Bangtang,LIN Yingsong,WANG Zhiyuan,SUN Baojiang,LIU Shujie,SUN Jinsheng,HOU Jian,REN Meipeng,WANG Ning |
Fig. 15. Variations of average signal voltages with gas void fraction of different density sucrose solutions. |