Patents by Inventor Joe Murphey

Joe Murphey 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).

  • Filter cake removal fluid
    Publication number: 20050161219
    Abstract: A method for removing filter cake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filter cake having an oxidation-degradable component, preferably a polysaccharide. The filter cake is contacted with a clear brine containing a mixture of a persulfate salt in a variable density brine to degrade the polymers within the filter cake. The persulfate mixture breaks down the filter cake in well bores having temperatures ranging from about 65° F. to 165° F. Concentration of the persulfate sets the pace of the reaction.
    Type: Application
    Filed: December 23, 2004
    Publication date: July 28, 2005
    Inventors: Mohammad Hossaini, Joe Murphey, Tom Carter, Jeffrey McKennis
  • Filter cake removal fluid and method
    Patent number: 6886635
    Abstract: A method for removing filter cake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filter cake having an oxidation-degradable component, preferably a polysaccharide. The filter cake is contacted with a clear brine containing a mixture of a persulfate salt in a variable density brine to degrade the polymers within the filter cake. The persulfate mixture breaks down the filter cake in well bores having temperatures ranging from about 65° F. to 165° F. Concentration of the persulfate sets the pace of the reaction.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: May 3, 2005
    Assignee: Tetra Technologies, Inc.
    Inventors: Mohammad Hossaini, Joe Murphey, Tom S. Carter, Jeffrey S. McKennis
  • Filter cake removal fluid and method
    Publication number: 20040040706
    Abstract: A method for removing filter cake from a subterranean borehole comprising drilling the borehole with a drilling fluid that includes additives to form a filter cake having an oxidation-degradable component, preferably a polysaccharide. The filter cake is contacted with a clear brine containing a mixture of a persulfate salt in a variable density brine to degrade the polymers within the filter cake. The persulfate mixture breaks down the filter cake in well bores having temperatures ranging from about 65° F. to 165° F. Concentration of the persulfate sets the pace of the reaction.
    Type: Application
    Filed: August 28, 2002
    Publication date: March 4, 2004
    Applicant: Tetra Technologies, Inc.
    Inventors: Mohammad Hossaini, Joe Murphey, Tom S. Carter, Jeffrey S. McKennis