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.

Date of Patent:
Sep. 12, 2017

Filed:

May. 20, 2014
Applicant:

Mærsk Drilling A/s, Copenhagen K, DK;

Inventors:

Jesper Holck, Humlebæk, DK;

Frederik Smidth, Kokkedal, DK;

Michael Kannegaard, Espergærde, DK;

Assignee:

MAERSK DRILLING A/S, Copenhagen K, DK;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/15 (2006.01); E21B 19/09 (2006.01); E21B 19/08 (2006.01);
U.S. Cl.
CPC ...
E21B 19/155 (2013.01); E21B 19/08 (2013.01);
Abstract

An offshore drilling rig including a drill floor deck having one or more holes, each defining a well center; one or more masts upwardly extending relative to the drill floor deck, and one or more hoisting systems, each supported by at least one of the one or more masts and configured for hoisting and lowering tubular equipment through at least one of the one or more well centers; a storage area for accommodating marine riser joints in upright orientation side by side in respective upright storage positions; a riser handling apparatus, different from the hoisting systems, adapted to move at least one of said marine riser joints along a movement path between its upright storage position and a prostrate maintenance/transfer position on a maintenance/transfer area, which movement path does not intersect any of the well centers.


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