申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LTD;HURLEY, NEIL FRANCIS;ZHANG, TUANFENG;ZHAO, WEISHU;XU, GUANGPING |
发明人 |
HURLEY, NEIL FRANCIS;ZHANG, TUANFENG;ZHAO, WEISHU;XU, GUANGPING |