申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;PRAD RESEARCH AND DEVELOPMENT LIMITED;HUANG, SONGMING;XIE, CHENG-GANG;ATKINSON, IAN |
发明人 |
HUANG, SONGMING;XIE, CHENG-GANG;ATKINSON, IAN |