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:
Nov. 20, 2018
Filed:
Dec. 29, 2015
Applicant:
Onesubsea Ip Uk Limited, London, GB;
Inventor:
Arne Veland, Bergen, NO;
Assignee:
OneSubsea IP UK Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/12 (2006.01); F04D 3/00 (2006.01); E21B 43/20 (2006.01);
U.S. Cl.
CPC ...
E21B 43/121 (2013.01); E21B 43/128 (2013.01); E21B 43/20 (2013.01); F04D 3/00 (2013.01);
Abstract
A subsea pump is used in applications such as deep-water boosting of fluid produced from a wellbore. The process pressure variation is mostly related to the pump suction side in such applications. The barrier fluid system for the pump regulates its pressure according to the pump discharge pressure. A balance piston is positioned in a location close to the pump inlet such that both mechanical seals are exposed to the pump discharge pressure on the process side.