Patents by Inventor Donavan Holland Brown

Donavan Holland Brown has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11613948
    Abstract: A downhole tool includes a tubular having an outer surface, an inner surface, a recess extending from the inner surface toward the outer surface, and an opening extending from the outer surface to the recess. A hydraulic passage extends through the tubular. The hydraulic passage includes an inlet, a first and a second branch. The second branch is fluidically exposed at the inner surface. A piston is arranged in the recess. A locking ring is arranged radially inwardly of the piston and a member is arranged in the tubular spaced from the inner surface. Application of hydraulic pressure in the first branch urges the piston radially inwardly clamping the locking ring against the member and application of hydraulic pressure in the second branch urges the member axially in a first direction relative to the tubular.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: March 28, 2023
    Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
    Inventors: Marc Samuelson, Donavan Holland Brown, Hai Hoang Nguyen
  • Patent number: 11566516
    Abstract: 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.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: January 31, 2023
    Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
    Inventor: Donavan Holland Brown
  • Patent number: 11549333
    Abstract: An indexing valve system includes a tubular having an inner surface portion defining a passage portion, a first plurality of indexing components provided on the inner surface and a second plurality of indexing components provided on the inner surface portion. A valve sleeve is arranged in the passage portion. The valve sleeve includes a first plurality of indexing elements that selectively engage with the first plurality of indexing components, a second plurality of indexing elements that selectively engage with the second plurality of indexing components, and an inner surface section defining a passage section. The inner surface section includes a plurality of indexing step members. An insert extends into the passage section. The insert includes an outer surface supporting an indexer that selectively engages with the plurality of indexing step members to shift the valve sleeve between the first plurality of indexing components and the second plurality of indexing components.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: January 10, 2023
    Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
    Inventors: Donavan Holland Brown, Hai Hoang Nguyen, Kyle Henagan
  • Publication number: 20220154542
    Abstract: A downhole tool includes a tubular having an outer surface, an inner surface, a recess extending from the inner surface toward the outer surface, and an opening extending from the outer surface to the recess. A hydraulic passage extends through the tubular. The hydraulic passage includes an inlet, a first and a second branch. The second branch is fluidically exposed at the inner surface. A piston is arranged in the recess. A locking ring is arranged radially inwardly of the piston and a member is arranged in the tubular spaced from the inner surface. Application of hydraulic pressure in the first branch urges the piston radially inwardly clamping the locking ring against the member and application of hydraulic pressure in the second branch urges the member axially in a first direction relative to the tubular.
    Type: Application
    Filed: September 29, 2021
    Publication date: May 19, 2022
    Applicant: Baker Hughes Oilfield Operations LLC
    Inventors: Marc Samuelson, Donavan Holland Brown, Hai Hoang Nguyen
  • Publication number: 20220136368
    Abstract: An indexing valve system includes a tubular having an inner surface portion defining a passage portion, a first plurality of indexing components provided on the inner surface and a second plurality of indexing components provided on the inner surface portion. A valve sleeve is arranged in the passage portion. The valve sleeve includes a first plurality of indexing elements that selectively engage with the first plurality of indexing components, a second plurality of indexing elements that selectively engage with the second plurality of indexing components, and an inner surface section defining a passage section. The inner surface section includes a plurality of indexing step members. An insert extends into the passage section. The insert includes an outer surface supporting an indexer that selectively engages with the plurality of indexing step members to shift the valve sleeve between the first plurality of indexing components and the second plurality of indexing components.
    Type: Application
    Filed: September 29, 2021
    Publication date: May 5, 2022
    Applicant: Baker Hughes Oilfield Operations LLC
    Inventors: Donavan Holland Brown, Hai Hoang Nguyen, Kyle Henagan
  • Publication number: 20210340863
    Abstract: 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.
    Type: Application
    Filed: May 4, 2020
    Publication date: November 4, 2021
    Applicant: Baker Hughes Oilfield Operations LLC
    Inventor: Donavan Holland Brown
  • Patent number: 11098558
    Abstract: 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.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: August 24, 2021
    Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
    Inventors: Donavan Holland Brown, Keith J. Murphy
  • Patent number: 10907444
    Abstract: 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.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: February 2, 2021
    Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
    Inventor: Donavan Holland Brown
  • Publication number: 20210010347
    Abstract: 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.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 14, 2021
    Applicant: Baker Hughes Oilfield Operations LLC
    Inventor: Donavan Holland Brown
  • Publication number: 20200378215
    Abstract: 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.
    Type: Application
    Filed: May 29, 2019
    Publication date: December 3, 2020
    Applicant: Baker Hughes Oilfield Operations LLC
    Inventors: Donavan Holland Brown, Keith J. Murphy
  • Patent number: 10472926
    Abstract: 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.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: November 12, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Do Seo Park, Marc Samuelson, Zhi Yong He, Gregory Armstrong, Donavan Holland Brown
  • Publication number: 20180363416
    Abstract: 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.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 20, 2018
    Applicant: Baker Hughes Incorporated
    Inventors: Do Seo Park, Marc Samuelson, Zhi Yong He, Gregory Armstrong, Donavan Holland Brown