Patents by Inventor Philip H. Winterfeld

Philip H. Winterfeld 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 of completing a well
    Patent number: 6253851
    Abstract: This invention relates to a method of completing a well that penetrates a subterranean formation and more particularly to a method for screen placement during proppant packing of formation perforations or fractures created by hydraulic fracturing techniques. The top of the screen is placed at a sufficient distance below the top of the perforations such that the frac pack pumping rate does not bridge off at the top of the screen when the frac pack is being pumped.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: July 3, 2001
    Assignee: Marathon Oil Company
    Inventors: Donald E. Schroeder, Jr., Philip H. Winterfeld