Patents by Inventor Denver LEE

Denver LEE 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: 20260103950
    Abstract: A drilling rig apparatus includes first and second industrial handling robots, a catwalk, and a powered mousehole collectively configured for automated red zone tubular handling. One of the industrial handling robots is secured to the drilling rig floor while the other is mounted on a track that allows movement out of the way of manual tubular operations, optionally off the drilling rig floor. The catwalk lifts each tubular from a staging area into position for grasping by the track-mounted industrial handling robot, with an orientation closer to vertical than horizontal. The powered mousehole moves tubulars held therein up or down to facilitate assembly with additional tubulars by the industrial handling robots.
    Type: Application
    Filed: July 29, 2025
    Publication date: April 16, 2026
    Inventors: Ashish Gupta, David Siljeg, Denver Lee, Zachary Gonzales
  • Patent number: 12258816
    Abstract: A land-based drilling rig includes a drill rig floor and a subfloor, the subfloor supporting the drill rig floor. The land-based drilling rig also includes a plurality of substructure boxes, the substructure boxes supporting the subfloor, each substructure box including a lower substructure box and two upper substructure boxes, wherein there is a gap between the two upper substructure boxes. In addition, the land-based drilling rig further includes a mast, the mast mechanically coupled to the drill rig floor.
    Type: Grant
    Filed: December 11, 2023
    Date of Patent: March 25, 2025
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Padira Reddy, Denver Lee, Premkumar Mongattil
  • Publication number: 20240102345
    Abstract: A land-based drilling rig includes a drill rig floor and a subfloor, the subfloor supporting the drill rig floor. The land-based drilling rig also includes a plurality of substructure boxes, the substructure boxes supporting the subfloor, each substructure box including a lower substructure box and two upper substructure boxes, wherein there is a gap between the two upper substructure boxes. In addition, the land-based drilling rig further includes a mast, the mast mechanically coupled to the drill rig floor.
    Type: Application
    Filed: December 11, 2023
    Publication date: March 28, 2024
    Inventors: Padira REDDY, Denver LEE, Premkumar MONGATTIL
  • Patent number: 11873685
    Abstract: A land-based drilling rig includes a drill rig floor and a subfloor, the subfloor supporting the drill rig floor. The land-based drilling rig also includes a plurality of substructure boxes, the substructure boxes supporting the subfloor, each substructure box including a lower substructure box and two upper substructure boxes, wherein there is a gap between the two upper substructure boxes. In addition, the land-based drilling rig further includes a mast, the mast mechanically coupled to the drill rig floor.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: January 16, 2024
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Padira Reddy, Denver Lee, Premkumar Mongattil
  • Patent number: 11572687
    Abstract: A mast assembly for a drilling rig includes a mast formed from a plurality of mast subunits. The mast assembly includes a lower drilling machine, upper drilling machine, and upper mud assembly, each of which is coupled to and movable vertically relative to the mast. The mast subunits are separable when the mast is in a transport configuration such that the LDM is positioned in a first subunit and the UDM is in a second subunit of the mast when the mast is in the transport configuration. The mast assembly may be used during a continuous drilling operation.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: February 7, 2023
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Ashish Gupta, Padira Reddy, Denver Lee
  • Publication number: 20220243456
    Abstract: A mast assembly for a drilling rig includes a mast formed from a plurality of mast subunits. The mast assembly includes a lower drilling machine, upper drilling machine, and upper mud assembly, each of which is coupled to and movable vertically relative to the mast. The mast subunits are separable when the mast is in a transport configuration such that the LDM is positioned in a first subunit and the UDM is in a second subunit of the mast when the mast is in the transport configuration. The mast assembly may be used during a continuous drilling operation.
    Type: Application
    Filed: April 22, 2022
    Publication date: August 4, 2022
    Inventors: Ashish GUPTA, Padira REDDY, Denver LEE
  • Patent number: 11371291
    Abstract: A drilling rig includes a rig floor, first and second support structures, a mast, a lower drilling machine, a continuous drilling unit, an upper drilling machine, and an upper mast assembly. The rig floor includes a V-door defining a V-door axis extending perpendicularly from the side of the rig floor that includes the V-door. The first and second support structures define a traverse corridor having a traverse corridor axis, wherein the traverse corridor axis is perpendicular to the V-door axis. The drilling rig may be used for continuous drilling of a wellbore.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 28, 2022
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Ashish Gupta, Padira Reddy, Denver Lee
  • Patent number: 11339565
    Abstract: A mast assembly for a drilling rig includes a mast formed from a plurality of mast subunits. The mast assembly includes a lower drilling machine, upper drilling machine, and upper mud assembly, each of which is coupled to and movable vertically relative to the mast. The mast subunits are separable when the mast is in a transport configuration such that the LDM is positioned in a first subunit and the UDM is in a second subunit of the mast when the mast is in the transport configuration. The mast assembly may be used during a continuous drilling operation.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: May 24, 2022
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC
    Inventors: Ashish Gupta, Padira Reddy, Denver Lee
  • Publication number: 20220065048
    Abstract: A land-based drilling rig includes a drill rig floor and a subfloor, the subfloor supporting the drill rig floor. The land-based drilling rig also includes a plurality of substructure boxes, the substructure boxes supporting the subfloor, each substructure box including a lower substructure box and two upper substructure boxes, wherein there is a gap between the two upper substructure boxes. In addition, the land-based drilling rig further includes a mast, the mast mechanically coupled to the drill rig floor.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Padira REDDY, Denver LEE, Premkumar MONGATTIL
  • Publication number: 20210017816
    Abstract: A drilling rig includes a rig floor, first and second support structures, a mast, a lower drilling machine, a continuous drilling unit, an upper drilling machine, and an upper mast assembly. The rig floor includes a V-door defining a V-door axis extending perpendicularly from the side of the rig floor that includes the V-door. The first and second support structures define a traverse corridor having a traverse corridor axis, wherein the traverse corridor axis is perpendicular to the V-door axis. The drilling rig may be used for continuous drilling of a wellbore.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 21, 2021
    Inventors: Ashish GUPTA, Padira REDDY, Denver LEE
  • Patent number: 10837238
    Abstract: A drilling rig includes a rig floor, first and second support structures, a mast, a lower drilling machine, a continuous drilling unit, an upper drilling machine, and an upper mast assembly. The rig floor includes a V-door defining a V-door axis extending perpendicularly from the side of the rig floor that includes the V-door. The first and second support structures define a traverse corridor having a traverse corridor axis, wherein the traverse corridor axis is perpendicular to the V-door axis. The drilling rig may be used for continuous drilling of a wellbore.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: November 17, 2020
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Ashish Gupta, Padira Reddy, Denver Lee
  • Patent number: 10697243
    Abstract: A coiled tubing rig includes a skid, a mast, and a drill floor. The mast may be pivotably coupled to the skid and may be moved between a horizontal position and a vertical position by a hydraulic cylinder. The drill floor may be pivotably coupled to the mast. The drill floor may be moved from a retracted to a deployed position by a hydraulic cylinder. The skid may include a BOP cradle and BOP controls. The coiled tubing rig may include a jib which may telescopically or pivotably extend from the mast. The coiled tubing rig may include a coiled tubing injector which is slidably positionable between a retracted and a deployed position.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 30, 2020
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Denver Lee, Donovan Korach, Ashish Gupta
  • Patent number: 10584541
    Abstract: A pipe handling apparatus includes a lower mast, upper mast, and trailer. The lower mast and upper mast may be pivotably coupled at a hinge point. The trailer may be coupled to the lower mast by a hydraulic cylinder. The pipe handling apparatus may be transported to a drilling rig and the lower mast mechanically coupled to the drilling rig. The upper mast may be pivoted relative to the lower mast at the hinge point. The lower mast and upper mast may be pivoted from the horizontal position to the vertical position by the hydraulic cylinder.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: March 10, 2020
    Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
    Inventors: Padira Reddy, Ashish Gupta, Denver Lee
  • Publication number: 20200024907
    Abstract: A drilling rig includes a rig floor, first and second support structures, a mast, a lower drilling machine, a continuous drilling unit, an upper drilling machine, and an upper mast assembly. The rig floor includes a V-door defining a V-door axis extending perpendicularly from the side of the rig floor that includes the V-door. The first and second support structures define a traverse corridor having a traverse corridor axis, wherein the traverse corridor axis is perpendicular to the V-door axis. The drilling rig may be used for continuous drilling of a wellbore.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 23, 2020
    Inventors: Ashish GUPTA, Padira REDDY, Denver LEE
  • Publication number: 20200024908
    Abstract: A mast assembly for a drilling rig includes a mast formed from a plurality of mast subunits. The mast assembly includes a lower drilling machine, upper drilling machine, and upper mud assembly, each of which is coupled to and movable vertically relative to the mast. The mast subunits are separable when the mast is in a transport configuration such that the LDM is positioned in a first subunit and the UDM is in a second subunit of the mast when the mast is in the transport configuration. The mast assembly may be used during a continuous drilling operation.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 23, 2020
    Inventors: Ashish GUPTA, Padira REDDY, Denver LEE
  • Publication number: 20180030788
    Abstract: A pipe handling apparatus includes a lower mast, upper mast, and trailer. The lower mast and upper mast may be pivotably coupled at a hinge point. The trailer may be coupled to the lower mast by a hydraulic cylinder. The pipe handling apparatus may be transported to a drilling rig and the lower mast mechanically coupled to the drilling rig. The upper mast may be pivoted relative to the lower mast at the hinge point. The lower mast and upper mast may be pivoted from the horizontal position to the vertical position by the hydraulic cylinder.
    Type: Application
    Filed: July 21, 2017
    Publication date: February 1, 2018
    Inventors: Padira REDDY, Ashish GUPTA, Denver LEE
  • Publication number: 20180016855
    Abstract: A coiled tubing rig includes a skid, a mast, and a drill floor. The mast may be pivotably coupled to the skid and may be moved between a horizontal position and a vertical position by a hydraulic cylinder. The drill floor may be pivotably coupled to the mast. The drill floor may be moved from a retracted to a deployed position by a hydraulic cylinder. The skid may include a BOP cradle and BOP controls. The coiled tubing rig may include a jib which may telescopically or pivotably extend from the mast. The coiled tubing rig may include a coiled tubing injector which is slidably positionable between a retracted and a deployed position.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 18, 2018
    Inventors: Denver LEE, Donovan KORACH, Ashish GUPTA