Patents by Inventor James Allen Douty

James Allen Douty 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: 9441444
    Abstract: A stripper packer for sealing a tubular of a wellsite is provided. The stripper packer includes an extendable housing, a packer, and a sliding window. The extendable housing has a passage therethrough to receive the tubular, and includes a piston operatively connectable between an upper and a lower portion of the extendable housing for selective movement therebetween. The packer is positionable within the extendable housing and sealingly engageable with the tubular. The sliding window is slidably positionable in the passage of the extendable housing and engageable with the packer. The sliding window is movable with the piston in response to pressure whereby the packer is sealable with the tubing.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: September 13, 2016
    Assignee: National Oilwell Varco, L.P.
    Inventors: Richard Michael Ward, James Allen Douty, Jeffrey Jeffrey Melancon, Douglas Avery Ware
  • Patent number: 9045961
    Abstract: A blowout preventer (BOP) seal and method are provided. The seal includes a tubular body comprising a plurality of segments that form a continuous loop. The tubular body has a plurality of inner projections extending from opposite sides of a first end thereof and a plurality of outer projections extending from opposite sides of a second end thereof. Each of the plurality of projections tapers away from the tubular body. A cross-sectional area along at least a portion of the plurality of segments is varied whereby the plurality of segments are selectively reinforced.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: June 2, 2015
    Assignee: National Oilwell Varco, L.P.
    Inventors: Jeffrey Thomas Melancon, James Allen Douty
  • Patent number: 9022126
    Abstract: A system and method for replacing equipment at a wellsite is provided. The wellsite has a subsea stripper installed proximate a subsea borehole. The system has a conveyance for delivering a BHA into the subsea borehole. The system has a subsea stripper having a central bore for passing the conveyance and the BHA therethrough, and at least one actuator connected to the subsea stripper for actuating a packer whereby the wellbore is sealed. The system has at least one replaceable seal assembly for installation within the stripper. The replaceable seal assembly has at least one packer extendable within the subsea stripper to form a seal thereabout and at least one locator sleeve for positioning the seal assembly in an install position within the subsea stripper. The replaceable seal assembly has a frangible member for connecting the seal assembly to the conveyance prior to deployment in the subsea stripper.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: May 5, 2015
    Assignee: National Oilwell Varco, L.P.
    Inventors: Jeffrey Thomas Melancon, Denzal Wayne Van Winkle, James Allen Douty
  • Publication number: 20150075801
    Abstract: A stripper packer for sealing a tubular of a wellsite is provided. The stripper packer includes an extendable housing, a packer, and a sliding window. The extendable housing has a passage therethrough to receive the tubular, and includes a piston operatively connectable between an upper and a lower portion of the extendable housing for selective movement therebetween. The packer is positionable within the extendable housing and sealingly engageable with the tubular. The sliding window is slidably positionable in the passage of the extendable housing and engageable with the packer. The sliding window is movable with the piston in response to pressure whereby the packer is sealable with the tubing.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 19, 2015
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Richard Michael WARD, James Allen DOUTY, Jeffrey Thomas MELANCON, Douglas Avery WARE
  • Publication number: 20140110611
    Abstract: A shear sealing system of a blowout preventer of a wellbore is provided. The blowout preventer including a housing having a bore and a guideway therethrough. A tubular of the wellbore is positionable in the bore. The shear sealing system includes at least one carriage, at least one blade and at least one seal. The carriages are slidably positionable in the guideway of the blowout preventer. The blades are carried by the carriages and movable thereby between a retracted position and an extended position. The blades are engageable with the tubular when in the extended position. The seal forms a seal about the tubular and with the blade when the blade is in the extended position.
    Type: Application
    Filed: June 6, 2012
    Publication date: April 24, 2014
    Applicant: National Oilwell Varco, L.P.
    Inventors: Perry Lee McClanahan, James Allen Douty, Richard M. Ward
  • Publication number: 20120193874
    Abstract: A blowout preventer (BOP) seal and method are provided. The seal includes a tubular body comprising a plurality of segments that form a continuous loop. The tubular body has a plurality of inner projections extending from opposite sides of a first end thereof and a plurality of outer projections extending from opposite sides of a second end thereof. Each of the plurality of projections tapers away from the tubular body. A cross-sectional area along at least a portion of the plurality of segments is varied whereby the plurality of segments are selectively reinforced.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 2, 2012
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Jeffrey Thomas Melancon, James Allen Douty
  • Publication number: 20120125622
    Abstract: A system and method for replacing equipment at a wellsite is provided. The wellsite has a subsea stripper installed proximate a subsea borehole. The system has a conveyance for delivering a BHA into the subsea borehole. The system has a subsea stripper having a central bore for passing the conveyance and the BHA therethrough, and at least one actuator connected to the subsea stripper for actuating a packer whereby the wellbore is sealed. The system has at least one replaceable seal assembly for installation within the stripper. The replaceable seal assembly has at least one packer extendable within the subsea stripper to form a seal thereabout and at least one locator sleeve for positioning the seal assembly in an install position within the subsea stripper. The replaceable seal assembly has a frangible member for connecting the seal assembly to the conveyance prior to deployment in the subsea stripper.
    Type: Application
    Filed: June 15, 2010
    Publication date: May 24, 2012
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Jeffrey Thomas Melancon, Denzal Wayne Van Winkle, James Allen Douty