Halliburton Energy Services, Inc.

Fraser Murray

Michael Linley Fripp

Shanshan Yu

Thanh Nam Vu

Stephen Michael Greci

Mohan Gunasekaran

Provided is a flow control valve, a well system, and a method. The flow control valve, in one aspect, includes a tubular configured to be positioned downhole in a wellbore, the tubular having a central longitudinal axis, and a piston located in the tubular, the piston configured to separate injection fluid located within the tubular from a working fluid located in a sealed working fluid chamber. The flow control valve, according to this aspect, further includes 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 a 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.

Autonomous injection flow control valve

Provided is a downhole material test sub assembly, a well system including the same, and a method for using the same. The downhole material test sub assembly, in one aspect, includes a flange for coupling to a mandrel, and one or more retainer assemblies coupled to the flange, the one or more retainer assemblies configured to accept a test specimen for running within a wellbore on the mandrel. The downhole material test sub assembly, according to another aspect, includes a mandrel and one or more grooves or pockets located in an outer surface of the mandrel, the one or more grooves or pockets configured to accept a test specimen for running within a wellbore on the mandrel.

Material test sub including one or more grooves or pockets for downhole environmental exposure

Material test sub including one or more retainer assemblies for downhole environmental exposure

A flow control valve configured to be positioned in a tubing in a borehole formed in a subsurface formation, wherein the flow control is used to regulate a flow of an injection fluid into the subsurface formation based on a vapor-transition characteristic of a fluid contained within a chamber of the flow control valve.

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Singapore, Singapore

Fraser Murray