US 12,480,390 B2
Submersible well fluid system
Christopher E. Cunningham, Spring, TX (US); Eduardo Cardoso, Rio de Janeiro (BR); Timothy Bartlett, Spring, TX (US); Paulo Guedes-Pinto, Round Rock, TX (US); Co Si Huynh, La Brea, CA (US); Robert Perry, Katy, TX (US); and John Davis Sink, Yorba Linda, CA (US)
Assigned to FMC Technologies, Inc., Houston, TX (US)
Filed by FMC Technologies, Inc., Houston, TX (US)
Filed on May 24, 2022, as Appl. No. 17/664,770.
Application 17/664,770 is a continuation of application No. 16/291,050, filed on Mar. 4, 2019, granted, now 11,352,863.
Application 16/291,050 is a continuation of application No. 14/777,408, granted, now 10,221,662, issued on Mar. 5, 2019, previously published as PCT/US2014/026745, filed on Mar. 13, 2014.
Claims priority of provisional application 61/801,793, filed on Mar. 15, 2013.
Prior Publication US 2022/0282602 A1, Sep. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 43/12 (2006.01); E21B 43/01 (2006.01); F04B 17/03 (2006.01); F04B 47/06 (2006.01); F04D 13/10 (2006.01); F04D 17/10 (2006.01); F04D 19/00 (2006.01); F04D 25/06 (2006.01); F04D 27/00 (2006.01); F04D 29/10 (2006.01); F04D 29/52 (2006.01); F04D 31/00 (2006.01); F04D 29/32 (2006.01)
CPC E21B 43/121 (2013.01) [E21B 43/01 (2013.01); F04B 17/03 (2013.01); F04B 47/06 (2013.01); F04D 13/10 (2013.01); F04D 17/10 (2013.01); F04D 19/002 (2013.01); F04D 25/0686 (2013.01); F04D 27/004 (2013.01); F04D 29/104 (2013.01); F04D 29/108 (2013.01); F04D 29/522 (2013.01); F04D 31/00 (2013.01); F04D 29/32 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A submersible barrier fluid supply system for a submersible well fluid system for operating submerged in a body of water, comprising:
a submersible vessel configured to withstand ambient pressure of a surrounding environment about the submersible vessel, wherein the surrounding environment is the body of water;
a barrier fluid inlet fluidically coupled to the surrounding environment and configured to intake a barrier fluid from the surrounding environment;
a pump disposed within the submersible vessel and fluidically coupled to the barrier fluid inlet and configured to pump the barrier fluid to a passage disposed within the submersible vessel;
a filter disposed within the submersible vessel and fluidically coupled to the passage and adapted to filter the barrier fluid;
a barrier fluid outlet fluidically coupled to the filter;
a reject passage disposed within the submersible vessel and configured to fluidically couple the passage to the surrounding environment;
a reject valve disposed within the submersible vessel and configured to control flow of barrier fluid through the reject passage; and
an electric machine comprising an adjustable speed drive having an active power factor correcting front end that comprises an input power line filter and an active power factor correcting rectifier configured to switch at a frequency greater than 60 Hertz.