| 发明名称 |
Drilling method |
| 摘要 |
<p>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.
</p> |
| 申请公布号 |
EP1505251(A3) |
申请公布日期 |
2007.02.14 |
| 申请号 |
EP20040105800 |
申请日期 |
1999.12.22 |
| 申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
METCALFE, PAUL, DAVID;SIMPSON, NEIL, ANDREW, ABERCROMBIE |
| 分类号 |
E21B43/10;B21D17/04;B21D39/04;B21D39/10;B21D41/02;E21B7/00;E21B7/20;E21B10/64;E21B19/16;E21B23/00;E21B23/02;E21B23/04;E21B29/00;E21B29/10;E21B33/10;E21B33/13;E21B33/138;E21B33/16;E21B43/08 |
主分类号 |
E21B43/10 |
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