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. 04, 2014
Filed:
Apr. 20, 2010
Robert B. Donnally, Shanghai, CN;
Chunqiao Ren, Shanghai, CN;
Xi Lin Liu, Henan, CN;
Yan Yu, Shanghai, CN;
Peng Yue, Shanghai, CN;
Wei Wang, Beijing, CN;
Robert B. Donnally, Shanghai, CN;
Chunqiao Ren, Shanghai, CN;
Xi Lin Liu, Henan, CN;
Yan Yu, Shanghai, CN;
Peng Yue, Shanghai, CN;
Wei Wang, Beijing, CN;
National Oilwell Varco, L.P., Houston, TX (US);
Abstract
Systems and methods for rig assembly and for erecting a mast of a rig and such systems with roller apparatus to facilitate movement of a mast section from a mover. In a first embodiment, the method includes erecting a rig mast section on a substructure, the substructure including a first substructure box spaced-apart from a second substructure box, the first substructure box comprising a first upper box above a first lower box and the second substructure box comprising a second upper box above a second lower box.