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经营范围
发明名称
Sealing well casings
摘要
申请公布号
SG71740(A1)
申请公布日期
2000.04.18
申请号
SG19970004436
申请日期
1997.12.12
申请人
SCHLUMBERGER HOLDINGS LIMTIED
发明人
SONG HAOSHI;LANDS, JACK, F.;VOREK, WALLACE, E.;PATEL, DANISH, R.
分类号
E21B29/10;E21B33/127;E21B33/13;E21B36/00;E21B43/10;(IPC1-7):E21B33/10
主分类号
E21B29/10
代理机构
代理人
主权项
地址
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