Patents by Inventor Garland W. Davis

Garland W. Davis 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: 6829922
    Abstract: A test method for foamed cement does not transfer the test composition under pressure from one device to another and the equipment is not handled under dangerous pressure, thereby providing a safe test method. Steps include: rotating a paddle at a first speed in a pressurized foamable cement composition in a receptacle in a high pressure, high temperature chamber such that the foamable cement composition becomes a foamed cement; rotating the paddle at a second speed in the pressurized foamed cement for a selected time period; maintaining the foamed cement static after the selected time period and increasing temperature in the chamber during a foamed cement setting period; thereafter reducing temperature in the chamber and reducing pressure in the chamber; removing the foamed cement in a set condition and the paddle from the chamber; removing the set foamed cement from the paddle; and testing the removed foamed cement.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: December 14, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ronald J. Patin, Dennis W. Gray, James H. Cantrell, D. Chad Brenneis, Garland W. Davis, Wendell D. Riley
  • Publication number: 20040055392
    Abstract: A test method for foamed cement does not transfer the test composition under pressure from one device to another and the equipment is not handled under dangerous pressure, thereby providing a safe test method. Steps include: rotating a paddle at a first speed in a pressurized foamable cement composition in a receptacle in a high pressure, high temperature chamber such that the foamable cement composition becomes a foamed cement; rotating the paddle at a second speed in the pressurized foamed cement for a selected time period; maintaining the foamed cement static after the selected time period and increasing temperature in the chamber during a foamed cement setting period; thereafter reducing temperature in the chamber and reducing pressure in the chamber; removing the foamed cement in a set condition and the paddle from the chamber; removing the set foamed cement from the paddle; and testing the removed foamed cement.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Inventors: Ronald J. Patin, Dennis W. Gray, James H. Cantrell, D. Chad Brenneis, Garland W. Davis, Wendell D. Riley
  • Patent number: 5871577
    Abstract: The present invention provides set retarding additives, set retarded hydraulic cement compositions and methods of using the set retarded cement compositions for cementing subterranean zones in wells. A preferred set retarding additive comprises an alkanolamine salt produced by the reaction of a hydroxy carboxy acid, such as tartaric acid, gluconic acid or glucoheptonic acid, with an alkanolamine, such as monoethanolamine, diethanolamine or triethanolamine.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: February 16, 1999
    Assignee: Halliburton Company
    Inventors: Jiten Chatterji, Rickey L. Morgan, Garland W. Davis
  • Patent number: 5711383
    Abstract: The present invention provides cementitious well drilling fluids and methods of drilling subterranean well bores. The drilling fluids are basically comprised of water, a water viscosity increasing material and a cementitious material which when deposited on the walls of the well bore as a part of the filter cake thereon consolidates the filter cake into a stable mass that readily bonds to a cementitious material slurry subsequently placed in the well bore. The methods of drilling a subterranean well bore are basically comprised of the steps of preparing a drilling fluid of the invention and drilling a subterranean well bore using the drilling fluid.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: January 27, 1998
    Assignee: Halliburton Company
    Inventors: Dralen T. Terry, Garland W. Davis, Bobby J. King, Jiten Chatterji, David D. Onan, Patty L. Totten
  • Patent number: 5672203
    Abstract: The present invention provides set retarding additives, set retarded hydraulic cement compositions and methods of using the set retarded cement compositions for cementing subterranean zones in wells. A preferred set retarding additive comprises an alkanolamine salt produced by the reaction of a hydroxy carboxy acid, such as tartaric acid, gluconic acid or glucoheptonic acid, with an alkanolamine, such as monoethanolamine, diethanolamine or triethanolamine.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: September 30, 1997
    Assignee: Halliburton Company
    Inventors: Jiten Chatterji, Rickey L. Morgan, Garland W. Davis
  • Patent number: 5293938
    Abstract: A method of forming in a desired location in a well bore a dual-state composite of a hardened hydraulic cement and a solid rubber which features the use of a composition consisting essentially of a mixture of a slurry of a hydraulic cement and a vulcanizable rubber latex.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: March 15, 1994
    Assignee: Halliburton Company
    Inventors: David D. Onan, Garland W. Davis, Roger S. Cromwell, Wendell D. Riley
  • Patent number: 5159980
    Abstract: Well completion methods utilizing rubber latex compositions are provided. The compositions are comprised of an aqueous suspension of rubber, a vulcanizing agent and a vulcanization activator, and are placed in a subterranean formation or a well bore at a desired location therein and allowed to vulcanize whereby a solid rubber plug or seal is formed.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: November 3, 1992
    Assignee: Halliburton Company
    Inventors: David D. Onan, Garland W. Davis, Roger S. Cromwell