Patents by Inventor Ramchandra M. Reddy

Ramchandra M. Reddy 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).

  • Foaming agents for use in coal seam reservoirs
    Patent number: 6915854
    Abstract: A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen or air. Preferably, the surfactant has the formula R—NH2—(CH2)n—C(O)OX wherein R is a saturated or unsaturated alkyl group having from 6-20 carbon atoms, n is from 2-6, and X is hydrogen or a salt forming cation.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: July 12, 2005
    Assignee: Schlumberger Technology Corporation
    Inventors: Kevin W. England, J. Ernest Brown, Jerald J. Hinkel, Ramchandra M. Reddy
  • Foaming agents for use in coal seam reservoirs
    Publication number: 20040159433
    Abstract: A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen or air.
    Type: Application
    Filed: February 10, 2004
    Publication date: August 19, 2004
    Inventors: Kevin W. England, J. Ernest Brown, Jerald J. Hinkel, Ramchandra M. Reddy
  • Foaming agents for use in coal seam reservoirs
    Patent number: 6720290
    Abstract: A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen or air. Preferably, the surfactant has the formula R—NH2—(CH2)n—C(O)OX wherein R is a saturated or unsaturated alkyl group having from 6-20 carbon atoms, n is from 2-6, and X is hydrogen or a salt forming cation.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: April 13, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Kevin W. England, J. Ernest Brown, Jerald J. Hinkel, Ramchandra M. Reddy
  • Foaming agents for use in coal seam reservoirs
    Publication number: 20030207768
    Abstract: A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen or air.
    Type: Application
    Filed: October 2, 2001
    Publication date: November 6, 2003
    Inventors: Kevin W. England, J. Ernest Brown, Jerald J. Hinkel, Ramchandra M. Reddy