Patents by Inventor Lamar L. Gantt

Lamar L. Gantt 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).

  • Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore
    Patent number: 10161227
    Abstract: The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: December 25, 2018
    Assignee: ConocoPhillips Company
    Inventors: David G. Hearn, Lamar L. Gantt, Dan E. Venhaus, John G. Eller
  • Permanent Bypass Whipstock Assembly For Drilling and Completing a Sidetrack Well and Preserving Access to the Original Wellbore
    Publication number: 20160305221
    Abstract: The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.
    Type: Application
    Filed: June 20, 2016
    Publication date: October 20, 2016
    Inventors: David G. HEARN, Lamar L. GANTT, Dan E. VENHAUS, John G. ELLER
  • Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore
    Patent number: 9371694
    Abstract: The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: June 21, 2016
    Assignee: ConocoPhillips Company
    Inventors: David D. Hearn, Lamar L. Gantt, Dan E. Venhaus, John G. Eller
  • Mill-through tailpipe liner exit and method of use thereof
    Patent number: 8256535
    Abstract: A method and apparatus for forming a window in the wall of a tubular wellbore. In one embodiment described herein, a down hole apparatus for forming a window in the wall of a wellbore utilizing a plurality of tubing string sections and a thick tailpipe positioned at the down hole end of a tubing section.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: September 4, 2012
    Assignee: ConocoPhillips Company
    Inventors: David D. Hearn, Lamar L. Gantt, Howard Gober
  • Permanent Bypass Whipstock Assembly For Drilling and Completing a Sidetrack Well and Preserving Access to the Original Wellbore
    Publication number: 20100307736
    Abstract: The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 9, 2010
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: David D. Hearn, Lamar L. Gantt, Dan E. Venhaus, John G. Eller
  • Mill-Through Tailpipe Liner Exit
    Publication number: 20100147592
    Abstract: A method and apparatus for forming a window in the wall of a tubular wellbore. In one embodiment described herein, a down hole apparatus for forming a window in the wall of a wellbore utilizing a plurality of tubing string sections and a thick tailpipe positioned at the down hole end of a tubing section.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: David D. Hearn, Lamar L. Gantt, Howard Gober
  • Mill starting device and method
    Patent number: 5725060
    Abstract: A mill starting device for use in a pipestring in a wellbore which provides an inclined wall for guiding the mill to a shoulder stop so that when the mill is operated it preferentially bites into the shoulder stop and a method for using the device together with coiled tubing for forming a window in a subsurface well conduit.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: March 10, 1998
    Assignee: Atlantic Richfield Company
    Inventors: Curtis G. Blount, Lamar L. Gantt, David D. Hearn, Gregory S. Walz
  • Squeeze cementing method for wells
    Patent number: 5332037
    Abstract: Perforation tunnels and other voids or spaces in earth formations in communication with wells are sealed more effectively by injecting and pre-packing resin-coated particulates (sand) into such tunnels or voids and allowing the sand to consolidate to form a substantially rigid, permeable mass. A lead slurry of relatively fine grained cement is then injected to fill the interstices formed in the permeable material occupying the tunnels or voids. A larger or more coarse grain cement is then injected to form a substantially impermeable, rigid filter cake at the interface of the wellbore and the permeable mass to prevent loss of cement slurry out of the tunnels or voids before the cement is set. Vertical and deviated or generally horizontal wellbores having perforation tunnels or voids which suffer unwanted cement drainage prior to setting of conventional oil well cements are more effectively sealed by the sequential injection of the permeable material followed by injection of settable cement slurries.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: July 26, 1994
    Assignee: Atlantic Richfield Company
    Inventors: Joseph H. Schmidt, Lamar L. Gantt, William H. Smalstig