申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
FENG, GUOFU;WANG, CHANGSHUAN;HAN, OLIVER;YAO, YUANWEN;LI, SENYUAN;WANG, BAOXING;WANG, FENG |