Inventor
JI ZEMIN
CN3 patents
Patents
3 patentsUS11344824B2May 31, 2022
Ultrasonic microbubble generation method, apparatus and system
PETROCHINA CO LTD0 citations47
US11179683B2Nov 23, 2021
Microbubble generation device and equipment
PETROCHINA CO LTD0 citations47
US11428065B2Aug 30, 2022
Borehole wall resistance increasing apparatus for improving energy utilization rate of injection gas
PETROCHINA CO LTD0 citations39