Patents by Inventor Peter H. Doe

Peter H. Doe 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).

  • Gelable compositions and use thereof in steam treatment of wells
    Patent number: 4845134
    Abstract: A gelable composition is provided which can be injected into a well prior to steam treatment of the well. The composition comprises water, a water-dispersible polymer, a water-dispersible first crosslinker and a water-dispersible second crosslinker, wherein the first and second crosslinkers have differing temperature responsive crosslinking characteristics over the temperature range of about 70.degree. F. to about 400.degree. F. so as to enable crosslinking of the polymer and gelation of the composition over substantially the entire temperature range. Injection of the composition into a "cold" well followed by steam treatment of the well causes the polymer to undergo a two stage crosslinking reaction which produces a particularly effective and stable gel in diverting steam from "thief zones" in the formation surrounding the well.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: July 4, 1989
    Assignee: Phillips Petroleum Company
    Inventors: Naim A. Mumallah, Peter H. Doe
  • Gelable compositions and use thereof in steam treatment of wells
    Patent number: 4799548
    Abstract: A gelable composition is provided which can be injected into a well prior to steam treatment of the well. The composition comprises water, a water-dispersible polymer, a water-dispersible first crosslinker and a water-dispersible second crosslinker, wherein the first and second crosslinkers have differing temperature responsive crosslinking characteristics over the temperature range of about 70.degree. F. to about 400.degree. F. so as to enable crosslinking of the polymer and gelation of the composition over substantially the entire temperature range. Injection of the composition into a "cold" well followed by steam treatment of the well causes the polymer to undergo a two stage crosslinking reaction which produces a particularly effective and stable gel in diverting steam from "thief zones" in the formation surrounding the well.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: January 24, 1989
    Assignee: Phillips Petroleum Company
    Inventors: Naim A. Mumallah, Peter H. Doe