发明名称 |
Profilutforming |
摘要 |
A drilling method comprises advancing a drill string through a cased section of a wellbore. The drill string comprises an expandable tubular, a drill assembly having a drill bit, and a tubing expander. The expandable tubular is advanced through the wellbore below the cased section, and at least a portion of the expandable tubular is expanded into the drilled wellbore using the expander. The expandable tubular does not overlap the cased section of the wellbore. |
申请公布号 |
NO20012600(D0) |
申请公布日期 |
2001.05.28 |
申请号 |
NO20010002600 |
申请日期 |
2001.05.28 |
申请人 |
WEATHERFORD/LAMB INC |
发明人 |
METCALFE, PAUL DAVID;SIMPSON, NEIL ANDREW ABERCROMBIE |
分类号 |
B21D17/04;B21D39/04;B21D39/10;B21D41/02;E21B7/00;E21B7/20;E21B19/16;E21B23/00;E21B23/02;E21B23/04;E21B29/00;E21B29/10;E21B33/10;E21B33/13;E21B33/138;E21B33/16;E21B43/08;E21B43/10;(IPC1-7):E21B |
主分类号 |
B21D17/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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