Patents by Inventor Jay R. Sellers

Jay R. Sellers 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).

  • Sequential hydraulic fracturing of a subsurface formation
    Patent number: 4869322
    Abstract: A subsurface formation having original in-situ stresses that favor the propagation of a horizontal fracture is penetrated by a borehole. A first fracturing fluid containing a propping material is pumped through the borehole and into the formation at a first depth to propagate a horizontal fracture which alters the in-situ stress field. The pumping of the first fracturing fluid is stopped and a second fracturing fluid is pumped through the borehole and into the formation at a second depth to form a vertical fracture within the field of altered in-situ stress.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: September 26, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Thomas C. Vogt, Jr., Mitchell W. Hale, Jay R. Sellers