Patents by Inventor Michael D. Herschberger

Michael D. Herschberger 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: 5407010
    Abstract: An artificial lift system and method for lifting fluids from an underground formation. The artificial lift system comprising a production tubing through which the fluid is carried from the formation to the surface and a pressure reducer, such as a venturi, fluidly connected to the production tubing to artificially raise the level of the fluid in the production tubing above the static level associated with the head pressure of the fluid in the formation. The method comprises reducing the pressure in the production tubing at an upper portion thereof to increase the pressure differential between the production tubing and the annular section of the well bore to increase the level of liquid in the production tubing for subsequent removal in an artificial lifting step.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: April 18, 1995
    Inventor: Michael D. Herschberger