| 发明名称 |
DOVETAIL THREAD COUPLING FOR EXPANDABLE TUBULARS |
| 摘要 |
An expandable coupling arrangement for coupling first and second tubulars includes a male thread portion on an end of the first tubular and a female thread portion on an end of the second tubular. The thread portions comprise dovetail threads having flanks, roots and crests, wherein the flanks are inclined at an angle of greater than 10~. |
| 申请公布号 |
CA2491300(A1) |
申请公布日期 |
2004.01.15 |
| 申请号 |
CA20032491300 |
申请日期 |
2003.07.03 |
| 申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
HARRAL, SIMON JOHN;SIMPSON, NEIL ANDREW ABERCROMBIE;METCALFE, PAUL DAVID;GLOVER, NEIL JAMES;DUGGAN, ANDREW MARTIN;STEPHENSON, DAVID |
| 分类号 |
E21B17/042;E21B17/08;E21B43/10;F16L13/14;F16L15/02;F16L15/04;F16L15/06;(IPC1-7):E21B17/08;E21B17/046 |
主分类号 |
E21B17/042 |
| 代理机构 |
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代理人 |
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