Patents by Inventor Trevor G. Jappy

Trevor G. Jappy 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).

  • Method and apparatus for fluid loss measurements of wellbore fluids
    Patent number: 8863567
    Abstract: The present disclosure is directed to a filter element for simulating a fracture in subterranean formations comprising a non-porous filter element configured to be disposed in a wellbore fluid testing device, the non-porous filter element having a plurality of radial perforations extending there through.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: October 21, 2014
    Assignee: M-I L.L.C.
    Inventors: Trevor G. Jappy, Lynn H. Jenkins, Mark W. Sanders
  • METHOD AND APPARATUS FOR FLUID LOSS MEASUREMENTS OF WELLBORE FLUIDS
    Publication number: 20110290012
    Abstract: The present disclosure is directed to a filter element for simulating a fracture in subterranean formations comprising a non-porous filter element configured to be disposed in a wellbore fluid testing device, the non-porous filter element having a plurality of radial perforations extending there through.
    Type: Application
    Filed: August 20, 2008
    Publication date: December 1, 2011
    Inventors: Trevor G. Jappy, Lynn H. Jenkins, Mark W. Sanders
  • Internal breaker
    Patent number: 7427582
    Abstract: A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including enteric polymers. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and peroxide released, by a change in pH. In a wellbore, this pH change can be effected by using produced fluids to lower the pH of a more basic wellbore fluid.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: September 23, 2008
    Assignee: M-I L.L.C.
    Inventors: David A Ballard, Christopher A Sawdon, Trevor G Jappy
  • Internal breaker
    Patent number: 6861394
    Abstract: A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including enteric polymers. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and peroxide released, by a change in pH. In a wellbore, this pH change can be effected by using produced fluids to lower the pH of a more basic wellbore fluid.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: March 1, 2005
    Assignee: M-I L.L.C.
    Inventors: David A. Ballard, Christopher A. Sawdon, Trevor G. Jappy
  • Internal breaker
    Publication number: 20030114314
    Abstract: A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including enteric polymers. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and peroxide released, by a change in pH. In a wellbore, this pH change can be effected by using produced fluids to lower the pH of a more basic wellbore fluid.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Inventors: David A. Ballard, Christopher A. Sawdon, Trevor G. Jappy