Sirkulasjonssystem i borehull med slam,申请号NO19980000684-传众专利搜索

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发明名称	Sirkulasjonssystem i borehull med slam
摘要
申请公布号	NO980684(D0)	申请公布日期	1998.02.18
申请号	NO19980000684	申请日期	1998.02.18
申请人	SCHLUMBERGER TECHNOLOGY BV	发明人	BENSON, WALTER R.;SAMPA, AUGDON J.;HLAVINKA, DANNY A.
分类号	E21B21/10;E21B23/08;(IPC1-7):E21B	主分类号	E21B21/10
代理机构		代理人
主权项
地址

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