Patents by Inventor Robert W. Pittman

Robert W. Pittman 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).

  • In situ production of hydrocarbons including shale oil
    Patent number: 4487260
    Abstract: A procedure is described for producing hydrocarbons from hydrocarbon-bearing formations including shale oil from an oil shale body wherein combinations of vertical and slant holes are drilled into the shale body, and an alternating sequence of fracturing and production by in situ combustion is performed between those holes.
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: December 11, 1984
    Assignee: Texaco Inc.
    Inventors: Robert W. Pittman, Marc F. Fontaine
  • Method for lifting oil in a well
    Patent number: 4251191
    Abstract: A method for lifting oil from the bottom of a well comprises, (1) injecting a fluid of less specific gravity into the well with a fluid flow control valve, and (2) equalizing the fluid pressure on all sides thereof for making the fluid flow control valve balanced and frictionless as the fluid of less specific gravity is ejected thus requiring a minimum of energy for operation thereof for providing a highly efficient lifting of the oil in the well.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: February 17, 1981
    Assignee: Texaco Inc.
    Inventors: John C. Gass, Noell C. Kerr, Robert W. Pittman
  • Gas lift valve and mandrel combination with improvement of the screening for said valve
    Patent number: 4149829
    Abstract: An improved conventional type of gas lift valve and mandrel combination. It has a large area screen which encloses the valve and prevents it from having the inlet port and/or its integral small area screen, become plugged.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: April 17, 1979
    Assignee: Texaco Inc.
    Inventors: Robert W. Pittman, Noell C. Kerr
  • Method and system for determining formation porosity
    Patent number: 4064749
    Abstract: A method and/or system for measuring formation porosity from drilling response. It involves measuring a number of drilling parameters and includes determination of tooth dullness as well as determining a reference torque empirically. One of the drilling parameters is the torque applied to the drill string.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: December 27, 1977
    Assignee: Texaco Inc.
    Inventors: Robert W. Pittman, Chester E. Hermes
  • Taco holder or the like
    Patent number: D310611
    Type: Grant
    Filed: August 12, 1986
    Date of Patent: September 18, 1990
    Inventor: Robert W. Pittman