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发明名称
METHOD AND APPARATUS FOR DEEP UNDERWATER WELL DRILLING AND COMPLETION
摘要
申请公布号
GB2121454(A)
申请公布日期
1983.12.21
申请号
GB19820028114
申请日期
1982.10.01
申请人
* ARMCO INC
发明人
JOHN E * LAWSON
分类号
E21B41/10;E21B43/017;(IPC1-7):E21B7/12;E21B43/01
主分类号
E21B41/10
代理机构
代理人
主权项
地址
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