Patents by Inventor Russell Fitzgerald

Russell Fitzgerald 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).

  • Zeolite compositions for lowering maximum cementing temperature
    Publication number: 20060065399
    Abstract: Zeolite compositions having a low maximum setting temperature for use in permafrost and waterwell applications are provided.
    Type: Application
    Filed: September 29, 2004
    Publication date: March 30, 2006
    Inventors: Karen Luke, Russell Fitzgerald, Frank Zamora, Joe Sandy
  • Methods of increasing the thickening times of phosphate-based cementitious compositions in high-temperature wellbores
    Publication number: 20050263285
    Abstract: A wellbore may be cemented by preparing a cementitious composition comprising water, a metal oxide or hydroxide compound, a phosphate compound, a borate compound, and a sugar, followed by displacing the cementitious composition into the wellbore. The metal oxide or hydroxide compound reacts with the phosphate compound in the wellbore to set into a hard mass. The synergistic effect of the borate compound and the sugar may increase a thickening time of the cementitious composition to in a range of from about 2 hours to about 11 hours at ambient temperatures in the wellbore. As such, the thickening time is sufficient to allow the cementitious composition to be placed in its desired location in the wellbore before setting.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 1, 2005
    Inventors: Ashok Santra, Russell Fitzgerald
  • Zeolite-containing cement composition
    Publication number: 20050204962
    Abstract: Methods and cement compositions are provided for sealing a subterranean zone penetrated by a wellbore, wherein the cement composition comprises zeolite, cementitious material, and a mixing fluid.
    Type: Application
    Filed: May 11, 2005
    Publication date: September 22, 2005
    Inventors: Karen Luke, B. Reddy, Russell Fitzgerald, Frank Zamora, Glen Fyten, Keith Rispler, Donald Getzlaf, Dennis Gray, Sears Dealy
  • Zeolite-containing remedial compositions
    Publication number: 20050072599
    Abstract: Methods and compositions for wellbore treating fluids, especially remedial compositions such as pills, that include zeolite and at least one carrier fluid.
    Type: Application
    Filed: December 4, 2003
    Publication date: April 7, 2005
    Inventors: Karen Luke, Russell Fitzgerald, Frank Zamora
  • Zeolite-containing drilling fluids
    Publication number: 20050000734
    Abstract: Methods and compositions for wellbore treating fluids, especially drilling fluids, that comprise zeolite and a carrier fluid.
    Type: Application
    Filed: March 5, 2004
    Publication date: January 6, 2005
    Inventors: Donald Getzlaf, Karen Luke, Russell Fitzgerald