US 11,655,691 B2
Downhole cleaning apparatus
Scott Henderson, Dubai (AE); Greg Rankin, Dubai (AE); and Johnoson Dsouza, Dubai (AE)
Assigned to Odfjell Technology Invest Ltd, Kokstad (NO)
Appl. No. 16/967,410
Filed by Odfjell Technology Invest Ltd, Kokstad (NO)
PCT Filed Feb. 11, 2019, PCT No. PCT/EP2019/053345
§ 371(c)(1), (2) Date Aug. 4, 2020,
PCT Pub. No. WO2019/155074, PCT Pub. Date Aug. 15, 2019.
Claims priority of application No. 1802223 (GB), filed on Feb. 12, 2018.
Prior Publication US 2021/0131230 A1, May 6, 2021
Int. Cl. E21B 37/04 (2006.01)
CPC E21B 37/04 (2013.01) 21 Claims
OG exemplary drawing
 
1. A downhole cleaning apparatus, comprising:
a body and a cleaning element coupled to the body;
the cleaning element selectively moveable in relation to the body from a retracted position to an extended position; and the cleaning element having an inner portion comprising a first retention formation and an outer portion comprising a cleaning formation; and
an actuation system comprising a second retention formation slideable in relation to the body between a retaining position and a release position;
wherein, in the retracted position, the first retention formation is coupled to the second retention formation and wherein the first and second formations together function as a latch, to latch the cleaning element in the retracted position;
the first and second retention formations being slideably releasable from one another by sliding the second retention formation from the retaining position to the release position, in which the cleaning element is able to move to the extended position.