PREVENTING FLUID MIGRATION AROUND WELL CASING,申请号GB19850009320-传众专利搜索

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发明名称	PREVENTING FLUID MIGRATION AROUND WELL CASING
摘要
申请公布号	GB8509320(D0)	申请公布日期	1985.05.15
申请号	GB19850009320	申请日期	1985.04.11
申请人	SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ BV	发明人
分类号	E21B33/14	主分类号	E21B33/14
代理机构		代理人
主权项
地址

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