Patents by Inventor Greg Marshall

Greg Marshall 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).

  • Publication number: 20240026761
    Abstract: A bi-directional valve with valve elements having compliant features biasing them together to maintain a sealing interface that defines a fluid communication barrier within the valve. Parting the valve elements from one another removes the sealing interface allow fluid communication across the valve elements. The valve includes a side port and a choke member that selectively blocks fluid flow through the valve when moved adjacent the side port and selectively opens the valve to fluid communication when moved away from the side port. The choke member remains adjacent the side port until the valve elements are spaced a distance apart greater than that at which valve erosion or fluid cavitation occurs.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 25, 2024
    Applicant: Silverwell Technology Ltd.
    Inventors: Joel David Shaw, Reece Eagles, Greg Marshall, Gerard Patterson
  • Publication number: 20160072219
    Abstract: A wet mate electrical connector includes a female connector and a male connector. The female connector can include a female connector body defining a central passage. The central passage can include a plurality of female contacts. The male connector can include a male connector body defining a central passage. A male pin can project from the central passage of the male connector body. The male pin can include a plurality of male contacts and be insertible into the central passage of the female connector. The male connector can also include a sleeve slidably displaceable over the male pin between a first position in which the sleeve covers the plurality of male contacts in a protected condition, and a second position in which the sleeve is retracted and exposes the plurality of male contacts.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 10, 2016
    Inventors: Matt Christiansen, Greg Marshall, Richard Miller
  • Patent number: 9270051
    Abstract: A wet mate electrical connector includes a female connector and a male connector. The female connector can include a female connector body defining a central passage. The central passage can include a plurality of female contacts. The male connector can include a male connector body defining a central passage. A male pin can project from the central passage of the male connector body. The male pin can include a plurality of male contacts and be insertible into the central passage of the female connector. The male connector can also include a sleeve slidably displaceable over the male pin between a first position in which the sleeve covers the plurality of male contacts in a protected condition, and a second position in which the sleeve is retracted and exposes the plurality of male contacts.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: February 23, 2016
    Inventors: Matt Christiansen, Greg Marshall, Richard Miller
  • Patent number: 9175233
    Abstract: An improved process for catalytic reformers and their use for the catalytic reforming of petroleum naphthas. More particularly, the invention relates to an improved reformer unit which can be operated at higher throughput relative to compressor size. The invention utilizes pressure swing adsorption to improve the hydrogen content of hydrogen containing streams generated by and utilized in catalytic reforming processes. The invention also has the capability of enabling compressor-limited catalytic reforming units to be operated at increased capacities.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: November 3, 2015
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Stuart S. Goldstein, John H. Thurtoll, Bal K. Kaul, Greg A. Marshall
  • Patent number: 8770300
    Abstract: A hydraulic connection mechanism for use in a wellbore comprises an upper connection tool, a lower connection tool configured to engage the upper connection tool and form a fluid communication pathway through the hydraulic connection mechanism, and a debris barrier disposed in the fluid communication pathway. The debris barrier comprises a body element, and a spring element configured to maintain the body element in a closed position when the upper connection tool is disengaged from the lower connection tool.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: July 8, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Joel D. Shaw, Greg Marshall
  • Patent number: 8739885
    Abstract: A hydraulic connection mechanism for use in a wellbore comprises an upper connection running tool, a lower connection tool configured to engage the upper connection running tool and form a fluid communication pathway through the hydraulic connection mechanism, and a debris barrier disposed in the fluid communication pathway. The debris barrier comprises a body element, and a spring element configured to maintain the body element in a closed position when the upper connection running tool is disengaged from the lower connection tool.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: June 3, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Joel D. Shaw, Greg Marshall
  • Publication number: 20130043038
    Abstract: A hydraulic connection mechanism for use in a wellbore comprises an upper connection running tool, a lower connection tool configured to engage the upper connection running tool and form a fluid communication pathway through the hydraulic connection mechanism, and a debris barrier disposed in the fluid communication pathway. The debris barrier comprises a body element, and a spring element configured to maintain the body element in a closed position when the upper connection running tool is disengaged from the lower connection tool.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 21, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Joel D. SHAW, Greg MARSHALL
  • Publication number: 20110147270
    Abstract: An improved process for catalytic reformers and their use for the catalytic reforming of petroleum naphthas. More particularly, the invention relates to an improved reformer unit which can be operated at higher throughput relative to compressor size. The invention utilizes pressure swing adsorption to improve the hydrogen content of hydrogen containing streams generated by and utilized in catalytic reforming processes. The invention also has the capability of enabling compressor-limited catalytic reforming units to be operated at increased capacities.
    Type: Application
    Filed: January 23, 2006
    Publication date: June 23, 2011
    Inventors: Stuart S. Goldstein, John H. Thurtoll, Bal K. Kaul, Greg A. Marshall
  • Patent number: 7963341
    Abstract: An anchor for a wellbore is adaptable to be operated in at least two separate and distinct ways. In one embodiment, a whipstock anchor is provided that can be operated either mechanically or hydraulically. In another embodiment, the anchor is designed to run through a restriction in a retracted position and thereafter expanded to position a wellbore tool in the wellbore. Preferably, the anchor is expandable to set in wellbores of various sizes and either cased or uncased.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: June 21, 2011
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Aristeo Rios, III, Greg Marshall, Stephen Hermes Hester, Adrian Vuyk, Jr., Ken W. Winterrowd, Dan Blankenship
  • Patent number: 7172039
    Abstract: The present invention generally relates to an apparatus and method for use in a wellbore. In one aspect, a downhole tool for use in a wellbore is provided. The downhole tool includes a housing having a shaped inner bore, a first end and a second end. The downhole tool further includes a rotor having a plurality of extendable members, wherein the rotor is disposable in the shaped inner bore to form at least one chamber therebetween. Furthermore, the downhole tool includes a substantially axial fluid pathway through the chamber, wherein the fluid pathway includes at least one inlet proximate the first end and at least one outlet proximate the second end. In another aspect a downhole motor for use in a wellbore is provided. In yet another aspect, a method of rotating a downhole tool is provided.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: February 6, 2007
    Assignee: Weatherford/Lamb, Inc.
    Inventors: David Warren Teale, Greg Marshall
  • Publication number: 20060207771
    Abstract: An anchor for a wellbore is adaptable to be operated in at least two separate and distinct ways. In one embodiment, a whipstock anchor is provided that can be operated either mechanically or hydraulically. In another embodiment, the anchor is designed to run through a restriction in a retracted position and thereafter expanded to position a wellbore tool in the wellbore. Preferably, the anchor is expandable to set in wellbores of various sizes and either cased or uncased.
    Type: Application
    Filed: March 3, 2006
    Publication date: September 21, 2006
    Inventors: Aristeo Rios, Greg Marshall, Stephen Hester, Adrian Vuyk, Ken Winterrowd, Dan Blankenship
  • Patent number: 7100696
    Abstract: The present invention generally relates to a disconnect for use in a wellbore to separate a tubular string from a stuck wellbore component. In one aspect, the invention includes a disconnect with a first portion and a second portion and a lock nut preventing the separation of the two portions. When a predetermined fluid force is applied to a piston in the disconnect, a tensile sleeve fails and the first and second portions of the disconnect separate, thereby leaving a portion of the disconnect in the wellbore with the stuck component. In one embodiment, the tensile sleeve's failure permits an annular piston to dislodge a wedge sleeve from the lock nut, thereby permitting separation of the first and second portion of the disconnect.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: September 5, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Greg Marshall
  • Publication number: 20050274648
    Abstract: A fixed-bed catalytic reformer unit is converted to moving bed reactor/cyclic regenerator operation by re-using the fixed bed reactors of the original unit as regenerator vessels operated in cyclic regeneration mode in a new catalyst regeneration section. A flow connection, suitably a liftpipe, is provided to convey spent catalyst from the spent catalyst outlet of a new moving bed reactor section to the converted regenerator section, together with a flow connection for regenerated catalyst from the regenerator section to the regenerated catalyst inlet of the new moving bed reactor section. A flow control distributor directs spent catalyst sequentially to each of the regenerator vessels to carry out the regeneration with regeneration gas. Each regenerator vessel is cycled through a fill, regeneration, discharge sequence to maintain a continuous flow of catalyst to and from the reactor section.
    Type: Application
    Filed: April 1, 2005
    Publication date: December 15, 2005
    Inventors: Stuart Goldstein, John Viets, Bozena Fiutowska, Brian Fojtasek, John Thurtell, Greg Marshall, Tomas Melli, Larry Iaccino, Kenneth Graziani
  • Publication number: 20050092525
    Abstract: The present invention generally relates to an apparatus and method for use in a wellbore. In one aspect, a downhole tool for use in a wellbore is provided. The downhole tool includes a housing having a shaped inner bore, a first end and a second end. The downhole tool further includes a rotor having a plurality of extendable members, wherein the rotor is disposable in the shaped inner bore to form at least one chamber therebetween. Furthermore, the downhole tool includes a substantially axial fluid pathway through the chamber, wherein the fluid pathway includes at least one inlet proximate the first end and at least one outlet proximate the second end. In another aspect a downhole motor for use in a wellbore is provided. In yet another aspect, a method of rotating a downhole tool is provided.
    Type: Application
    Filed: October 29, 2003
    Publication date: May 5, 2005
    Inventors: David Teale, Greg Marshall
  • Publication number: 20030062169
    Abstract: The present invention generally relates to a disconnect for use in a wellbore to separate a tubular string from a stuck wellbore component. In one aspect, the invention includes a disconnect with a first portion and a second portion and a lock nut preventing the separation of the two portions. When a predetermined fluid force is applied to a piston in the disconnect, a tensile sleeve fails and the first and second portions of the disconnect separate, thereby leaving a portion of the disconnect in the wellbore with the stuck component. In one embodiment, the tensile sleeve's failure permits an annular piston to dislodge a wedge sleeve from the lock nut, thereby permitting separation of the first and second portion of the disconnect.
    Type: Application
    Filed: September 9, 2002
    Publication date: April 3, 2003
    Inventor: Greg Marshall
  • Patent number: 5248986
    Abstract: A universal swivel device is mounted between a vehicular mount assembly and an elevated feed assembly of an adjustable angle vehicular antenna in which the vehicular mount assembly is of the type having a housing, a threaded collar, a contact button, an insulator, a bracket with mounting screws to engage a vehicular structure of a motor vehicle, a grommet and a gasket, while the elevated feed assembly is of the type having an antenna extension and a mounting base with internal threads. The universal swivel device consists of a base assembly connectable onto the threaded collar of the vehicular mount assembly. A swivel assembly is carried within an upper portion of the base assembly and is connectable into the internal threads of the mounting base of the elevated feed assembly. A double acting contactor assembly is carried within a lower portion of the base assembly to always maintain a constant contact between the swivel assembly and the contact button in the vehicular mount assembly.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: September 28, 1993
    Inventor: Greg Marshall
  • Patent number: 5198829
    Abstract: The present invention relates to an improved antenna. The improved antenna includes a rod; a first suction cup; a second suction cup; and connectors for removably mounting the first suction cup and the second suction cup longitudinally to the rod.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: March 30, 1993
    Inventor: Greg Marshall