Invention Grant
- Patent Title: Drilling rigs and erection methods
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Application No.: US12074270Application Date: 2008-02-29
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Publication No.: US08468753B2Publication Date: 2013-06-25
- Inventor: Robert Benjamin Donnally , Chunqiao Ren , Stuart Arthur Lyall McCurdy , Xi Lin Liu , Hui Chun Sheng , Yan Yu
- Applicant: Robert Benjamin Donnally , Chunqiao Ren , Stuart Arthur Lyall McCurdy , Xi Lin Liu , Hui Chun Sheng , Yan Yu
- Applicant Address: US TX Houston
- Assignee: National Oilwell Varco L.P.
- Current Assignee: National Oilwell Varco L.P.
- Current Assignee Address: US TX Houston
- Agency: Williams, Morgan & Amerson, P.C.
- Main IPC: E04H12/18
- IPC: E04H12/18 ; E04H12/34

Abstract:
Systems and methods for erecting a drilling rig. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
Public/Granted literature
- US20090218139A1 Drilling rigs and erection methods Public/Granted day:2009-09-03
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