申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;LEVESQUE, CYRILLE;ALUMBAUGH, DAVID;ROSTHAL, RICHARD;ZHANG, HONG |
发明人 |
LEVESQUE, CYRILLE;ALUMBAUGH, DAVID;ROSTHAL, RICHARD;ZHANG, HONG |