A METHOD OF INSERTING A TOOL INTO A WELL UNDER PRESSURE,申请号GB19890011331-传众专利搜索

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发明名称	A METHOD OF INSERTING A TOOL INTO A WELL UNDER PRESSURE
摘要
申请公布号	GB2218721(B)	申请公布日期	1992.04.29
申请号	GB19890011331	申请日期	1989.05.17
申请人	* SCHLUMBERGER LIMITED	发明人	PIERRE * GOLDSCHILD
分类号	E21B23/14;E21B33/072	主分类号	E21B23/14
代理机构		代理人
主权项
地址

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