METHOD AND APPARATUS FOR CONTROLLING A WELL DURING DRILLING OPERATIONS,申请号GB19760040222-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR CONTROLLING A WELL DURING DRILLING OPERATIONS
摘要
申请公布号	GB1505443(A)	申请公布日期	1978.03.30
申请号	GB19760040222	申请日期	1976.09.28
申请人	OTIS ENG CORP	发明人
分类号	E21B21/10;E21B33/127;E21B33/1295;E21B34/14;(IPC1-7):E21B33/12	主分类号	E21B21/10
代理机构		代理人
主权项
地址

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