Title:
CRANE, MARINE VESSEL OR RIG, AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/045572
Kind Code:
A3
Abstract:
There is described a crane for running equipment into or out of a well slot in a deck of a marine vessel or rig, a related marine rig or vessel that includes the crane, and related methods. In various embodiments, the crane has a boom configured for conveying a travel unit along the boom on a track. In further embodiments, the travel unit includes a top drive to which a drill string extending through the well slot is attached, the top drive operating to rotate the drill string for drilling a section of a wellbore.
Inventors:
PLANO MARCO (NO)
Application Number:
PCT/NO2018/050218
Publication Date:
August 22, 2019
Filing Date:
August 31, 2018
Export Citation:
Assignee:
NAT OILWELL VARCO NORWAY AS (NO)
International Classes:
E21B19/09; B63B27/10; B63B35/44; E21B15/02
Foreign References:
| US2889898A | 1959-06-09 | |||
| GB763864A | 1956-12-19 | |||
| US2606003A | 1952-08-05 | |||
| GB2080857A | 1982-02-10 | |||
| US7644784B1 | 2010-01-12 | |||
| US3477522A | 1969-11-11 |
Attorney, Agent or Firm:
HÅMSØ PATENTBYRÅ AS (NO)
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