Invention Grant
- Patent Title: Coupling tubulars
- Patent Title (中): 耦合管
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Application No.: US11449571Application Date: 2006-06-08
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Publication No.: US07578043B2Publication Date: 2009-08-25
- Inventor: Neil Andrew Abercrombie Simpson , Simon John Harrall , Paul David Metcalfe , Neil James Glover , David Stephenson , Andrew Michael Duggan
- Applicant: Neil Andrew Abercrombie Simpson , Simon John Harrall , Paul David Metcalfe , Neil James Glover , David Stephenson , Andrew Michael Duggan
- Applicant Address: US TX Houston
- Assignee: Weatherford/Lamb, Inc.
- Current Assignee: Weatherford/Lamb, Inc.
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, L.L.P.
- Priority: GB0215668.5 20020706
- Main IPC: B21D39/00
- IPC: B21D39/00 ; B21D53/84 ; E21B23/00 ; F16L15/00 ; F16L19/00 ; F16L13/14 ; F16L35/00
Abstract:
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°.
Public/Granted literature
- US20080007060A1 Coupling tubulars Public/Granted day:2008-01-10
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