Patents by Inventor Barry B. Ekstrand

Barry B. Ekstrand 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).

  • Light weight high temperature well cement compositions and methods
    Patent number: 6488763
    Abstract: The present invention provides methods of cementing subterranean zones using cement compositions comprising calcium aluminate, fly ash, sodium polyphosphate and water.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: December 3, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lance E. Brothers, Susan M. Turkett, Barry B. Ekstrand, D. Chad Brenneis, Jerry D. Childs
  • Light weight high temperature well cement compositions and methods
    Publication number: 20020050231
    Abstract: The present invention provides methods of cementing subterranean zones using cement compositions comprising calcium aluminate, fly ash, sodium polyphosphate and water.
    Type: Application
    Filed: October 5, 2001
    Publication date: May 2, 2002
    Inventors: Lance E. Brothers, Susan M. Turkett, Barry B. Ekstrand, D. Chad Brenneis, Jerry D. Childs
  • Cement compositions and methods for high temperature wells containing carbon dioxide
    Patent number: 6332921
    Abstract: The present invention provides light weight high temperature well cement compositions and methods. The compositions are basically comprised of calcium aluminate, ASTM class F fly ash and water.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: December 25, 2001
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lance E. Brothers, Susan M. Turkett, Barry B. Ekstrand, D. Chad Brenneis, Jerry D. Childs
  • Light weight high temperature well cement compositions and methods
    Patent number: 6143069
    Abstract: The present invention provides light weight high temperature well cement compositions and methods. The compositions are basically comprised of calcium aluminate, ASTM class F fly ash and water.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: November 7, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lance E. Brothers, Susan M. Turkett, Barry B. Ekstrand, D. Chad Brenneis, Jerry D. Childs
  • Repairing leaks in casings
    Patent number: 5123487
    Abstract: This invention relates to a method of repairing a hole in and thereby terminating the undesirable flow of fluid through a hole in a casing disposed in a wellbore penetrating a subterranean earth formation which method involves the same use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement, which is utilized in a water slurry, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: June 23, 1992
    Assignee: Halliburton Services
    Inventors: Kirk L. Harris, Edward F. Vinson, Daniel L. Bour, David P. Ewert, Barry B. Ekstrand