Method of treating drilling fluids to reduce water losses,申请号US19500181913-传众专利搜索

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发明名称	Method of treating drilling fluids to reduce water losses
摘要
申请公布号	US2660561(A)	申请公布日期	1953.11.24
申请号	US19500181913	申请日期	1950.08.28
申请人	SOCONY-VACUUM OIL COMPANY, INCORPORATED	发明人	WATKINS THOMAS E.
分类号	E21B21/00	主分类号	E21B21/00
代理机构		代理人
主权项
地址

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