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:
Aug. 23, 2016

Filed:

Oct. 07, 2013
Applicant:

Subsea 7 Limited, Sutton, GB;

Inventors:

Daniel Karunakaran, Tananger, NO;

Frederico Nicoletti De Fraga, Niteroi, BR;

Chunqun Ji, Houston, TX (US);

Chunfa Wu, Houston, TX (US);

Yun Ding, Sugar Land, TX (US);

Assignee:

Subsea 7 Limited, Sutton, GB;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 17/01 (2006.01); B63B 22/02 (2006.01); B63B 22/04 (2006.01); B63B 22/20 (2006.01);
U.S. Cl.
CPC ...
E21B 17/012 (2013.01); B63B 22/023 (2013.01); B63B 22/04 (2013.01); B63B 22/20 (2013.01); E21B 17/015 (2013.01);
Abstract

A subsea riser support buoy is disclosed having a riser support member and a jumper support member that extend generally parallel to each other and that define a lengthwise direction extending between them across the buoy. Pontoons extend lengthwise beyond the riser support member and the jumper support member to provide attachment points for connecting tethers to the buoy. In this way, the attachment points are spaced more widely than lengthwise extremities of the riser support member and the jumper support member, beneficially altering the dynamic behavior of the buoy and especially its pitch characteristics.


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