Patents by Inventor George W. Bettge

George W. Bettge 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).

  • Drilling fluid systems with improved fluid loss properties
    Patent number: 7439209
    Abstract: A drilling fluid system comprising a brine and a quantity of cationic copolymers comprising a ratio of acrylamide monomers to cationic derivatives of acrylamide monomers, wherein the quantity and the ratio are effective to maintain effective rheology and fluid loss control in said drilling fluid system at temperatures of at least about 250° C. for at least about 16 hours.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: October 21, 2008
    Assignee: Baker Hughes Incorporated
    Inventors: Billy G. Chesser, Charles Perricone, George W. Bettge
  • Drilling fluid systems with improved fluid loss properties
    Publication number: 20040072695
    Abstract: A drilling fluid system comprising a brine and a quantity of cationic copolymers comprising a ratio of acrylamide monomers to cationic derivatives of acrylamide monomers, wherein the quantity and the ratio are effective to maintain effective rheology and fluid loss control in said drilling fluid system at temperatures of at least about 250° C. for at least about 16 hours.
    Type: Application
    Filed: May 1, 2002
    Publication date: April 15, 2004
    Inventors: Billy G. Chesser, Charles Perricone, George W. Bettge, Dennis Clapper
  • Drilling fluid systems with improved fluid loss properties
    Patent number: 6403537
    Abstract: A drilling fluid system comprising a brine and a quantity of cationic copolymers comprising a ratio of acrylamide monomers to cationic derivatives of acrylamide monomers, wherein the quantity and the ratio are effective to maintain effective rheology and fluid loss control in said drilling fluid system at temperatures of at least about 250° C. for at least about 16 hours.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: June 11, 2002
    Assignee: Baker Hughes Incorporated
    Inventors: Billy G. Chesser, Charles Perricone, George W. Bettge