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发明名称
Drilling fluid
摘要
申请公布号
US4879654(A)
申请公布日期
1989.11.07
申请号
US19880150815
申请日期
1988.02.01
申请人
SCHLUMBERGER TECHNOLOGY CORPORATION
发明人
BRUCE, SUE
分类号
E21B21/08;E21B49/00
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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