Patents by Inventor Clark E. Robison

Clark E. Robison 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 for enhanced oil recovery
    Patent number: 4646828
    Abstract: An impingement device in a side pocket mandrel or other downhole tools for injecting a predetermined quality of steam in one or more zones of a formation. The impingement device directs and mixes the laminae of hot fluid and vapor and a valve in a valve pocket controls the flow of steam to the zone from the side pocket mandrel or other downhole tools. Along with the impingement device, a centralizer to guide tools through the impingement device and to cause a pressure change and dispersion of the steam; and an agitation device to amalgamate the steam may be used if further blending is required.
    Type: Grant
    Filed: November 1, 1985
    Date of Patent: March 3, 1987
    Assignee: Otis Engineering Corporation
    Inventors: Carl M. Schwab, Jr., Clark E. Robison, James B. Renfroe, Jr.
  • Apparatus and method for enhanced oil recovery
    Patent number: RE33614
    Abstract: An impingement device in a side pocket mandrel or other downhole tools for injecting a predetermined quality of steam in one or more zones of a formation. The impingement device directs and mixes the laminae of hot fluid and vapor and a valve in a valve pocket controls the flow of steam to the zone from the side pocket mandrel or other downhole tools. Along with the impingement device, a centralizer to guide tools through the impingement device and to cause a pressure change and dispersion of the steam; and an agitation device to amalgamate the steam may be used if further blending is required.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: June 18, 1991
    Assignee: Otis Engineering Corp.
    Inventors: Carl M. Schwab, Jr., Clark E. Robison, James B. Renfroe, Jr.