Patents by Inventor Stephen P. Luscombe

Stephen P. Luscombe 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).

  • Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry
    Patent number: 7866394
    Abstract: Methods of cementing in subterranean formations, cement compositions, and methods for making the compositions are provided. A cement slurry is passed into a subterranean formation, and a swelling agent is passed into the subterranean formation to reduce an amount of water flowing into the cement slurry. The swelling agent may be combined with a carrier fluid before being displaced into the subterranean formation. Alternatively, the swelling agent may be pre-mixed with the cement slurry to form a new cement composition, followed by displacing the cement composition into the subterranean formation. The swelling agent is present in an amount effective to, upon absorption of water and swelling to form a gel mass, substantially block the flow path of the water into the cement composition or reduce losses to low pore pressure intervals, thereby preventing the integrity of the cement composition from being compromised or lost to voidage, fractures, fissures, etc.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: January 11, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: Prentice G. Creel, Charles L. Boatman, Richard H. Tate, Eldon Dwyann Dalrymple, Stephen P. Luscombe, John L. Eubank
  • Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry
    Publication number: 20040168802
    Abstract: Methods of cementing in subterranean formations, cement compositions, and methods for making the compositions are provided. A cement slurry is passed into a subterranean formation, and a swelling agent is passed into the subterranean formation to reduce an amount of water flowing into the cement slurry. The swelling agent may be combined with a carrier fluid before being displaced into the subterranean formation. Alternatively, the swelling agent may be pre-mixed with the cement slurry to form a new cement composition, followed by displacing the cement composition into the subterranean formation. The swelling agent is present in an amount effective to, upon absorption of water and swelling to form a gel mass, substantially block the flow path of the water into the cement composition or reduce losses to low pore pressure intervals, thereby preventing the integrity of the cement composition from being compromised or lost to voidage, fractures, fissures, etc.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 2, 2004
    Inventors: Prentice G. Creel, Charles L. Boatman, Richard H. Tate, Eldon Dwyann Dalrymple, Stephen P. Luscombe, John L. Eubank