The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2011
Filed:
Feb. 29, 2008
Robert Benjamin Donnally, Shanghai, CN;
Chunqiao Ren, Shanghai, CN;
Stuart Arthur Lyall Mccurdy, Edmonton, CA;
Xi Lin Liu, Puyang, CN;
Hui Chun Sheng, Shanghai, CN;
Yan Yu, Shanghai, CN;
Robert Benjamin Donnally, Shanghai, CN;
Chunqiao Ren, Shanghai, CN;
Stuart Arthur Lyall McCurdy, Edmonton, CA;
Xi Lin Liu, Puyang, CN;
Hui Chun Sheng, Shanghai, CN;
Yan Yu, Shanghai, CN;
National Oilwell Varco L.P., Houston, TX (US);
Abstract
Methods and systems for installing a drawworks on a drilling rig, the method, in certain aspects, including moving a drawworks on movement apparatus on the ground adjacent a drill floor of a rig, connecting the drawworks to the drill floor, moving the movement apparatus away from the rig, and raising the drill floor with the drawworks thereon using raising apparatus of a rig substructure supporting the drill floor. 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).