The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1987
Filed:
Sep. 15, 1986
Charles H Ware, Roanoke, VA (US);
Leslie C Rose, Rocky Mount, VA (US);
WorldEnergy Systems, Inc., Fort Worth, TX (US);
Abstract
Oxygen is injected into a petroleum bearing subsurface formation penetrated by production well and the petroleum in the formation is subjected to in-situ combustion to heat the formation in a zone surrounding the production well. After heating by the in-situ combustion, heated hydrogen is injected into the heated formation zone by way of the production well. By way of another well penetrating the petroleum bearing subsurface formation and spaced from the production well, fluid is injected into the formation to drive petroleum in the formation between the two wells to the production well for recovery. Hydrogenation of the petroleum occurs in the heated zone in the presence of hydrogen therein.