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:
Jul. 02, 2019
Filed:
Nov. 21, 2016
Applicant:
Rowan Companies, Inc., Houston, TX (US);
Inventors:
Michael James Dowdy, Hockley, TX (US);
Frankie Derek Necaise, Klin, MS (US);
Assignee:
Rowan Companies, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 17/00 (2006.01); E21B 15/02 (2006.01); E21B 15/00 (2006.01); E02B 17/00 (2006.01); E21B 7/00 (2006.01); E04B 1/34 (2006.01);
U.S. Cl.
CPC ...
E21B 15/003 (2013.01); E02B 17/00 (2013.01); E21B 7/00 (2013.01); E21B 15/02 (2013.01); E02B 2017/0056 (2013.01);
Abstract
A dual tower rig includes a hull supported by one or more legs and includes a cantilever assembly coupled to the hull. Dual towers are supported by a skidding system that is coupled to the cantilever assembly. The towers are configured to conduct independent operations and are movable relative to each other and to the hull by the skidding system and the cantilever assembly.