US 12,404,745 B1
Autonomous injection flow control valve
Michael Linley Fripp, Singapore (SG); Fraser Murray, Singapore (SG); and Mohan Gunasekaran, Singapore (SG)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Feb. 29, 2024, as Appl. No. 18/591,783.
Int. Cl. E21B 34/10 (2006.01); E21B 41/00 (2006.01); F16K 5/06 (2006.01)
CPC E21B 34/10 (2013.01) [E21B 41/0064 (2013.01); F16K 5/0647 (2013.01)] 21 Claims
OG exemplary drawing
 
21. A method, comprising:
providing injection fluid to a wellbore tubular extending downhole into a wellbore extending through a subterranean formation; and
controlling a flow of the injection fluid between the wellbore tubular and the subterranean formation using a flow control valve, the flow control valve including:
a tubular having a central longitudinal axis;
a piston located in the tubular, the piston configured to separate the injection fluid located within the tubular from a working fluid located in a sealed working fluid chamber;
a valve assembly located within the tubular and coupled with the piston, wherein the piston is configured to axially slide within the tubular to move the valve assembly between an open position that provides a fluid passageway for the injection fluid from the tubular into the subterranean formation and a closed position that closes the fluid passageway for the injection fluid from the tubular into the subterranean formation, based upon a density of the injection fluid.