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发明名称
Drillable bridge plug
摘要
申请公布号
GB2411672(A)
申请公布日期
2005.09.07
申请号
GB20050003938
申请日期
2005.02.25
申请人
* SMITH INTERNATIONAL INC
发明人
WILLIAM M * ROBERTS;JAMES A * SIMSON;GEORGE J * MELENYZER
分类号
E21B;E21B29/00;E21B33/12;E21B33/129;E21B33/134;(IPC1-7):E21B33/134
主分类号
E21B
代理机构
代理人
主权项
地址
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