Patents by Inventor J. David Tyrer

J. David Tyrer 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).

  • Upgrading heavy oil
    Patent number: 5055179
    Abstract: Heavy crude oils are upgraded thermally in the presence of water and a polyhydroxy metal bentonite in an autoclave, particularly at a temperature of about 200.degree. to about 300.degree. C.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: October 8, 1991
    Assignee: Ortech Corporation
    Inventor: J. David Tyrer
  • Use of hydrogen-free carbon monoxide with steam in recovery of heavy oil at low temperatures
    Patent number: 4487264
    Abstract: A process for recovering oil from a subterranean heavy oil-containing reservoir is provided, wherein steam and carbon monoxide are injected into the reservoir at a temperature less than about 260.degree. C. At these low temperatures, the steam and hydrogen-free carbon monoxide are found to react in the reservoir, by the water gas reaction, to form carbon dioxide and hydrogen. These products both have upgrading effects on the heavy oil, enhancing its quality and producibility. At the low temperatures of the process, gasification and polymerization of the heavy oil are minimized.
    Type: Grant
    Filed: July 2, 1982
    Date of Patent: December 11, 1984
    Assignee: Alberta Oil Sands Technology and Research Authority
    Inventors: James B. Hyne, J. David Tyrer