Patents by Inventor Johnny D. Fisher

Johnny D. Fisher 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).

  • Patent number: 4175039
    Abstract: A washer separator system for drilling cuttings for use in drilling mud washing systems for water environment oil wells filled with washing solution is described using a receiving tank with an agitation subchamber which causes thorough scrubbing of the deposited drilling cuttings. The washed cuttings settle to the bottom of the tank causing the solution level to rise. When a predetermined solution level is reached, an auger, situated at the bottom of the tank, is activated and the collected cuttings are removed. When the solution level drops a sufficient amount for removal of the cuttings, the auger is shut off and the cycle begins anew. Fresh water washing solutions may be used, so that the oil saturated depleted solution may be added to the drilling mud. Collected cuttings may be deposited in the water environment without a slick forming. A pump delivers solution to the top of the cuttings trough. Intake for the pump is above the collected cuttings.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: November 20, 1979
    Inventor: Johnny D. Fisher