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:
Apr. 21, 2009
Filed:
Jan. 08, 2007
Shankar Uluvana Bhat, Houston, TX (US);
John Christian Hartley Mungall, Houston, TX (US);
Kevin Gerard Haverty, Houston, TX (US);
David Brian Andersen, Houston, TX (US);
William Lewis Greiner, Houston, TX (US);
Shankar Uluvana Bhat, Houston, TX (US);
John Christian Hartley Mungall, Houston, TX (US);
Kevin Gerard Haverty, Houston, TX (US);
David Brian Andersen, Houston, TX (US);
William Lewis Greiner, Houston, TX (US);
Kellogg Brown & Root LLC, Houston, TX (US);
Abstract
Disclosed are methods to counter buoyancy and install variable tension risers using a weighted chain ballast line. An example of an apparatus used in conjunction with the embodiments includes compliant variable tension risers to connect deep-water subsea wellheads to a single floating platform. The variable tension risers allow several subsea wellheads, in water depths from 4,000 to 10,000 feet, at lateral offsets from one-tenth to one-half of the depth, to tie back to a single floating dry tree semi-submersible platform.