Patents by Inventor Del Scot Christensen

Del Scot Christensen 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).

  • Sulfur barrier for use with in situ processes for treating formations
    Patent number: 7631689
    Abstract: Methods for forming a barrier around at least a portion of a treatment area in a subsurface formation are described herein. Sulfur may be introduced into one or more wellbores located inside a perimeter of a treatment area in the formation having a permeability of at least 0.1 darcy. At least some of the sulfur is allowed to move towards portions of the formation cooler than the melting point of sulfur to solidify the sulfur in the formation to form the barrier.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: December 15, 2009
    Assignee: Shell Oil Company
    Inventors: Harold J. Vinegar, Del Scot Christensen
  • Sulfur barrier for use with in situ processes for treating formations
    Publication number: 20080173442
    Abstract: Methods for forming a barrier around at least a portion of a treatment area in a subsurface formation are described herein. Sulfur may be introduced into one or more wellbores located inside a perimeter of a treatment area in the formation having a permeability of at least 0.1 darcy. At least some of the sulfur is allowed to move towards portions of the formation cooler than the melting point of sulfur to solidify the sulfur in the formation to form the barrier.
    Type: Application
    Filed: April 20, 2007
    Publication date: July 24, 2008
    Inventors: Harold J. Vinegar, Del Scot Christensen