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:
Feb. 14, 2017
Filed:
Jun. 13, 2014
Applicant:
Cameron Sense As, Kristiansand, NO;
Inventors:
Erling Tambs, Kristiansand, NO;
Harald Langenes, Sønge, NO;
Håkon F. Bergan, Kristiansand, NO;
Bård H. Kaasin, Gvarv, NO;
Assignee:
Cameron Sense AS, Kristiansan D, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 19/09 (2006.01); E21B 19/04 (2006.01); E21B 19/00 (2006.01); B66D 1/60 (2006.01); B66D 1/50 (2006.01); B66D 1/52 (2006.01);
U.S. Cl.
CPC ...
E21B 19/006 (2013.01); B66D 1/50 (2013.01); B66D 1/52 (2013.01); E21B 19/09 (2013.01);
Abstract
Various hoisting systems with heave compensation are provided. In one embodiment, an apparatus includes a hoisting system having a crown block and a drawworks. The drawworks includes a rotatable drum for reeling in and reeling out a hoisting line that is wound on the rotatable drum and reeved over the crown block. The hoisting system includes active heave control at the drawworks and a passive heave compensation system. Additional systems, devices, and methods are also disclosed.