Patents by Inventor Darrel C. Brenneis

Darrel C. Brenneis 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).

  • Methods of cementing pipe in well bores and low density cement compositions therefor
    Patent number: 6979366
    Abstract: The present invention provides methods of cementing pipe in well bores and low density cement compositions having enhanced compressive, tensile and bond strengths upon setting. The composition of the invention are basically comprised of a hydraulic cement, sufficient water to form a slurry and hollow glass microspheres surface treated with a mixture of organosilane coupling agents present in an amount sufficient to produce a cement composition density in the range of from about 6 to about 12 pounds per gallon.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: December 27, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Roger S. Cromwell, Darrel C. Brenneis, Bobby J. King
  • Methods of cementing pipe in well bores and low density cement compositions therefor
    Publication number: 20040016371
    Abstract: The present invention provides methods of cementing pipe in well bores and low density cement compositions having enhanced compressive, tensile and bond strengths upon setting. The composition of the invention are basically comprised of a hydraulic cement, sufficient water to form a slurry and hollow glass microspheres surface treated with a mixture of organosilane coupling agents present in an amount sufficient to produce a cement composition density in the range of from about 6 to about 12 pounds per gallon.
    Type: Application
    Filed: December 10, 2002
    Publication date: January 29, 2004
    Inventors: Jiten Chatterji, Roger S. Cromwell, Darrel C. Brenneis, Bobby J. King
  • Stable well cementing methods and compositions
    Patent number: 6641660
    Abstract: The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, an aqueous hydrogenated styrene-butadiene rubber latex and a latex stabilizer present in an amount sufficient to stabilize the hydrogenated styrene-butadiene latex.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: November 4, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Roger S. Cromwell, Bobby J. King, Darrel C. Brenneis, Ronald J. Crook
  • Stable well cementing methods and compositions
    Patent number: 6516884
    Abstract: The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, an aqueous hydrogenated styrene-butadiene rubber latex and a latex stabilizer present in an amount sufficient to stabilize the hydrogenated styrene-butadiene latex.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: February 11, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Roger S. Cromwell, Bobby J. King, Darrel C. Brenneis, Ronald J. Crook
  • Methods of cementing pipe in well bores and low density cement compositions therefor
    Patent number: 6516883
    Abstract: The present invention provides methods of cementing pipe in well bores and low density cement compositions having enhanced compressive, tensile and bond strengths upon setting. The composition of the invention are basically comprised of a hydraulic cement, sufficient water to form a slurry and hollow glass microspheres surface treated with a mixture of organosilane coupling agents present in an amount sufficient to produce a cement composition density in the range of from about 6 to about 12 pounds per gallon.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: February 11, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jiten Chatterji, Roger S. Cromwell, Darrel C. Brenneis, Bobby J. King