Patents by Inventor Alton J. Nute

Alton J. Nute 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 recovering petroleum from underground formations
    Patent number: 4457372
    Abstract: A method is disclosed in which the production of petroleum is improved or reinstated in formations that have been partially depleted by primary recovery techniques or where the communication between the injection well and the production well has been restricted by the swelling of water sensitive clays in the formation. In this method an aqueous fluid comprising polysaccharide in sufficient concentration to increase the viscosity of the aqueous fluid, a water soluble quanidine compound and a naturally occurring salt is injected into the formation through an injection well and petroleum and aqueous fluids are produced through a production well.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: July 3, 1984
    Assignee: Texaco Inc.
    Inventors: Martha S. Doster, Alton J. Nute, Charles A. Christopher