申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;CLARK, BRIAN;MORRISON, FRANK;NICHOLS, EDWARD;ZHANG, HONG;ROSTHAL, RICHARD, A. |
发明人 |
CLARK, BRIAN;MORRISON, FRANK;NICHOLS, EDWARD;ZHANG, HONG;ROSTHAL, RICHARD, A. |