Donavan H Brown, 352322 Joel Wheaton Rd, Houston, TX 77077

2023004, Feb 9, 2023

Aug 3, 2021

17/392770

Donavan Brown - Houston TX, US
Stephen Bisset - Porter TX, US

Baker Hughes Oilfield Operations LLC - Houston TX

E21B 34/10
E21B 34/14
E21B 34/08

A valve including a housing having an inlet and an outlet, a piston disposed in the housing, the piston having a first end and a second end, the piston movable between a position blocking fluid flow between the inlet and the outlet and a position allowing fluid flow between the inlet and the outlet, a pressure balance pathway through the housing porting the same pressure to both first and second ends of the piston, an actuator responsive to applied pressure on the valve, the actuator attached to the piston and a biasing arrangement configured to bias the actuator toward a closed position of the valve. A method for injecting a sequestration fluid including maintaining the fluid at a supercritical phase upstream of a valve, opening the valve by increasing pressure of the fluid, delaying phase change of the fluid from supercritical to gas.

2021034, Nov 4, 2021

May 4, 2020

16/865505

Donavan Holland Brown - Houston TX, US

Baker Hughes Oilfield Operations LLC - Houston TX

E21B 47/12
E21B 23/03

An indexing valve system includes a first tubular having an outer surface portion, an inner surface portion defining a passage portion, and a plurality of indexing components. A second tubular is axially aligned with the first tubular. The second tubular includes an outer surface section, an inner surface section defining a passage section, and a plurality of indexing members that selectively inter-engage with the plurality of indexing components. The inner surface section including a plurality of indexing elements. An insert extends into, and is axially shiftable relative to, the passage portion and the passage section. The insert includes an outer surface supporting an indexer that selectively engages with the plurality of indexing elements to rotate the second tubular relative to the first tubular.

2021001, Jan 14, 2021

Jul 9, 2019

16/505802

Donavan Holland Brown - Houston TX, US

Baker Hughes Oilfield Operations LLC - Houston TX

E21B 34/10

A choke system for a downhole valve including a first tubular having an outer surface, an inner surface, and a first flow port extending through the outer surface and the inner surface. A second tubular is shiftably arranged relative to the first tubular radially inwardly of the inner surface. The second tubular includes a second flow port that is selectively aligned with the first flow port. A choke member including a choke opening is positioned between the first tubular and the second tubular. The choke member is selectively shiftable and rotatable relative to the first tubular and the second tubular. A choke actuator is axially aligned with the choke member and positioned between the first tubular and the second tubular. The choke actuator being selectively shiftable to unseat the choke member and rotate the choke opening relative to the first and second flow ports.

2020037, Dec 3, 2020

May 29, 2019

16/425273

Donavan Holland Brown - Houston TX, US
Keith J. Murphy - Hartford CT, US

Baker Hughes Oilfield Operations LLC - Houston TX

E21B 34/10

An embodiment of an injection arrangement including a principal fluid pathway having a first check valve; a bypass pathway fluidly connected to the principal fluid pathway upstream of the first check valve and connected to the principal fluid pathway downstream of the first check valve. Also a method for injecting a fluid including supplying an injection fluid to an injection arrangement as in any prior embodiment; flowing fluid through the bypass pathway; preventing fluid flow through the bypass pathway; and then flowing fluid through the principal fluid pathway.

2018036, Dec 20, 2018

Jun 14, 2017

15/622107

Do Seo Park - Houston TX, US
Marc Samuelson - Houston TX, US
Zhi Yong He - Cypress TX, US
Gregory Armstrong - Houston TX, US
Donavan Holland Brown - Houston TX, US

Baker Hughes Incorporated - Houston TX

E21B 34/08
F16K 15/04
F16K 15/02
F16K 25/00
F16K 25/04
F16K 31/122

A pressurized seat check valve including a flexible frustoconical seat having a back surface configured for exposure to upstream pressure, a closure member in sealable communication with the seat, the closure member being biased into contact with the seat and, in use, the seat being deflected toward the closure member by the exposure to upstream pressure.