US 11,988,061 B2
Hydraulic control line filters for subsea high-pressure application
Parteek Kapoor, Haryana (IN); Sunil Prakash, Fulshear, TX (US); and Amit Saini, Nabh (IN)
Assigned to Oceaneering International, Inc., Houston, TX (US)
Filed by Oceaneering International, Inc., Houston, TX (US)
Filed on Feb. 22, 2023, as Appl. No. 18/112,561.
Prior Publication US 2023/0265730 A1, Aug. 24, 2023
Int. Cl. E21B 33/035 (2006.01); E21B 33/076 (2006.01)
CPC E21B 33/0355 (2013.01) [E21B 33/076 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hydraulic control line filter for subsea high-pressure application, comprising:
a. a housing comprising an inner housing cavity and a pressurized fluid inlet;
b. an end cap disposed at a first end of the housing, the end cap comprising a filtered fluid outlet;
c. a first centralizer disposed within the inner housing cavity, the first centralizer comprising an inner first centralizer cavity and a first centralizer portion disposed at least partially within the housing;
d. a sump tube disposed and centered within the housing, an outer surface of the sump tube and an inner surface of the inner housing cavity defining a sump tube cavity there-between, the sump tube comprising a sump tube inner cavity in fluid communication with the pressurized fluid inlet;
e. a filter centralizer disposed at least partially within the sump tube inner cavity; and
f. a fluid filter disposed at least partially within the sump tube and centered within the sump tube by the filter centralizer, the fluid filter in fluid communication with the filtered fluid outlet and the sump tube, a portion of the filter centralizer at least partially disposed within the fluid filter.