Patents by Inventor Cesar Francisco Ovalles

Cesar Francisco Ovalles 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 for upgrading in situ heavy oil
    Patent number: 9739125
    Abstract: A method is provided for producing upgraded heavy oil from a subterranean reservoir by producing a steam chamber within the reservoir by the action of steam and flowing a liquid phase additive into a near wellbore region of the steam chamber to control asphaltenes mobility within the near wellbore region. Build-up of asphaltenes, which derive from the heavy oil, in the near wellbore region has the potential of affecting heavy oil production rates from the reservoir. The additive is formulated to mobilize the asphaltenes within this region.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 22, 2017
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Ian Phillip Benson, Cesar Francisco Ovalles
  • METHOD FOR UPGRADING IN SITU HEAVY OIL
    Publication number: 20160177691
    Abstract: A method is provided for producing upgraded heavy oil from a subterranean reservoir by producing a steam chamber within the reservoir by the action of steam and flowing a liquid phase additive into a near wellbore region of the steam chamber to control asphaltenes mobility within the near wellbore region. Build-up of asphaltenes, which derive from the heavy oil, in the near wellbore region has the potential of affecting heavy oil production rates from the reservoir. The additive is formulated to mobilize the asphaltenes within this region.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Inventors: Ian Phillip Benson, Cesar Francisco Ovalles