Method of insulating a subsea structure

Details Method of insulating a subsea structure Method of insulating a subsea structure

2004-06-03

2010-06-29

Seidleck, James (Department: 1796)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S102000, C507S129000, C507S136000, C507S137000, C507S139000, C507S202000, C507S230000, C507S231000, C507S235000, C507S242000, C507S260000, C507S261000, C507S263000, C507S266000, C405S210000, C405S211100, C166S275000, C166S302000, C166S356000

Reexamination Certificate

active

07745379

ABSTRACT:
A method of insulating pipeline bundles used in recovering hydrocarbons from wells is disclosed. A polymeric substance, such as an orthophosphate ester, is injected into the annulus between a carrier pipe and the hydrocarbon conveying tubulars. A ferric salt, such as ferric sulphate, may be added as a gelling agent. The mixture results in a gel having a dynamic viscosity of greater than (1000) PaS. The gel insulates the inner hydrocarbon-conveying tubulars from the surrounding seawater thus helping to maintain the relatively high temperature therewithin. This in turn reduces the likelihood for chemicals, such as hydrates, to be precipitated out of the oil phase.

REFERENCES:
patent: 3749173 (1973-07-01), Hill et al.
patent: 3757864 (1973-09-01), Crawford et al.
patent: 3990978 (1976-11-01), Hill
patent: 5290768 (1994-03-01), Ramsay et al.
patent: 5417287 (1995-05-01), Smith et al.
patent: 5571315 (1996-11-01), Smith et al.
patent: 6284809 (2001-09-01), Plummer et al.
patent: 6297201 (2001-10-01), Geib
patent: 6933341 (2005-08-01), Truong Dinh et al.
patent: 2004/0092626 (2004-05-01), Chomard et al.
patent: 0336493 (1989-10-01), None
patent: 0467635 (1992-01-01), None
patent: 0500206 (1992-08-01), None
patent: 2317895 (1998-04-01), None
patent: WO 02/062918 (2002-08-01), None
US 6,513,577, 02/2003, Baylot et al. (withdrawn)

Affiliated with

Also associated with

Rating

Method of insulating a subsea structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of insulating a subsea structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of insulating a subsea structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4180335