Patents by Inventor Mark Petrick

Mark Petrick 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).

  • Single well injection and production system
    Patent number: 5131471
    Abstract: A method is disclosed for fluid injection and oil production from a single wellbore which includes providing a path of communication between the injection and production zones.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: July 21, 1992
    Assignee: Chevron Research and Technology Company
    Inventors: John H. Duerksen, Donald J. Anderson, Doug J. McCallum, Mark Petrick
  • Method of recovering hydrocarbons using single well injection/production system
    Patent number: 5024275
    Abstract: Production of viscous hydrocarbons is initiated by first injecting an injection fluid down at least two tubing strings in a wellbore having multiple tubing strings therein. Following an initiation phase, flow of injection fluid in the production tubing string is ceased, and production of formation fluid to the surface commenced in the heated tubing. The production of formation fluids is controlled, and entry of uncondensed steam from the formation into the wellbore avoided by maintaining a liquid level in the formation which is above the production perforations.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: June 18, 1991
    Assignee: Chevron Research Company
    Inventors: Donald J. Anderson, John H. Duerksen, Doug J. McCallum, Mark Petrick