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发明名称
Downhole sealing
摘要
申请公布号
GB9930166(D0)
申请公布日期
2000.02.09
申请号
GB19990030166
申请日期
1999.12.22
申请人
PETROLINE WELLSYSTEMS LIMITED;ASTEC DEVELOPMENTS LIMITED
发明人
分类号
B21D17/04;B21D39/04;B21D39/10;E21B29/00;E21B29/10;E21B33/138;E21B33/16;E21B43/10
主分类号
B21D17/04
代理机构
代理人
主权项
地址
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