US 12,064,729 B2
Device for processing water, system, and methods
David Pinchin, Hundvåg (NO); and Karl Erik B. Selvig, Sandnes (NO)
Assigned to Grant Prideco, Inc., Houston, TX (US)
Appl. No. 17/040,158
Filed by National Oilwell Varco Norway AS, Kristiansand S (NO)
PCT Filed Mar. 28, 2019, PCT No. PCT/NO2019/050065
§ 371(c)(1), (2) Date Sep. 22, 2020,
PCT Pub. No. WO2019/190330, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 18164582 (EP), filed on Mar. 28, 2018.
Prior Publication US 2021/0008500 A1, Jan. 14, 2021
Int. Cl. B01D 61/18 (2006.01); B01D 63/06 (2006.01); C02F 1/44 (2023.01); C02F 103/08 (2006.01)
CPC B01D 63/061 (2013.01) [B01D 61/18 (2013.01); C02F 1/444 (2013.01); B01D 2313/04 (2013.01); B01D 2313/105 (2013.01); B01D 2313/13 (2013.01); B01D 2313/54 (2013.01); B01D 2317/04 (2013.01); B01D 2317/06 (2013.01); C02F 2103/08 (2013.01); C02F 2303/14 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A device for subsea water processing, the device comprising:
a plurality of tubular housing sections for housing filter membranes for treating water by filtration in the interiors of the tubular housing sections, wherein the interiors of the housing sections are separate from one another and the housing sections each have a first end and a second end;
a feed inlet for supplying the device with water to be treated;
an extraction outlet for extracting treated water from the device;
a distributor chamber configured for containing a flow of the water to be treated from the feed inlet and distributing the water to be treated into the interiors of the housing sections through the first ends of housing sections, wherein the first ends of the housing sections are each connected to the distributor chamber by annular joints formed on the outsides of the respective housing sections at or near the first ends of the housing sections;
a collector chamber connected to the second ends of the housing sections, wherein the collector chamber is configured for collecting the treated water from the interiors of the housing sections through the second ends of the housing sections and communicating a merged flow of the treated water to the extraction outlet; and
a water treatment flowpath that extends from the feed inlet into the distributor chamber, through the distributor chamber and into the interiors of the housing sections through the first ends of the housing sections, through the interiors of the housing sections and into the collector chamber through the second ends of the housing sections, and from the collector chamber to the extraction outlet, wherein the water treatment flowpath is configured to transport at least some of the flow of the water to be treated from the feed inlet to the extraction outlet as treated water.