Patents by Inventor Forest R. Mitchell

Forest R. Mitchell 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 for determining residual oil saturation of a formation
    Patent number: 4124800
    Abstract: A method for determining the residual oil saturation of a formation by the following steps: (1) injecting radioactive water into the formation; (2) logging the gamma response of the formation; (3) chemically flooding the formation to remove substantially all of the residual oil; (4) injecting radioactive water into the formation; (5) logging the gamma response of the formation; and (6) determining the residual oil saturation from the difference in the two gamma logs.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: November 7, 1978
    Assignee: Shell Oil Company
    Inventors: Forest R. Mitchell, Joseph D. Robinson, John P. Vogiatzis