申请人 |
SCHLUMBERGER TECHNOLOGY B.V.;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER LIMITED;SCHLUMBERGER SURENCO S.A.;PETROLEUM RESEARCH AND DEVELOPMENT N.V.;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER OVERSEAS S.A.;SCHLUMBERGER HOLDINGS LIMITED |
发明人 |
YAMATE, TSUTOMU;SCHROEDER, ROBERT;RAMOS, ROGERIO;MULLINS, OLIVER |