Patents by Inventor Richard J. Curtice

Richard J. Curtice 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).

  • Apparatus and methods for sealing voids in a subterranean formation
    Patent number: 7281576
    Abstract: Downhole tools that include an outer tubing disposed around an inner tubing for placement of a sealant mixture into a void in a subterranean formation and associated methods of use are provided. Furthermore, a method is provided for preparing a cement composition, which includes mixing a first cementitious component and an aqueous-based fluid in a first mixer to form an intermediate cement composition, and mixing the intermediate cement composition and a second cementitious component in a second mixer to form the cement composition.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: October 16, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Richard J. Curtice, Gregory D. Wilcox, Len E. Fry
  • Methods of terminating water flow in a subterranean formation
    Patent number: 5921319
    Abstract: This invention relates to methods of using environmentally friendly cementitious compositions for terminating water flow in a subterranean formation such as in a fresh water zone or water aquifer. Preferred compositions of the present invention include a hydraulic cementitious material such as Portland cement, a viscosifying agent such as bentonite which increases the viscosity of the composition in the presence of water, and a vegetable oil.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: July 13, 1999
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Richard J. Curtice