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:
Nov. 10, 1981
Filed:
May. 21, 1980
Robert B Alston, Missouri City, TX (US);
Texaco Inc., White Plains, NY (US);
Abstract
Oil may be recovered from dipping reservoirs by a conditionally miscible oil recovery process in which a gaseous, carbon dioxide-containing fluid is injected up-dip to displace petroleum downward in a conditionally miscible, gravity-stabilized displacement process. Carbon dioxide-containing blending stock is mixed with an inert gas such as methane or nitrogen in order to reduce its density sufficiently to increase the critical velocity of the displacement process. By increasing the critical velocity, the time required to deplete a reservoir is decreased significantly. Sufficient intermediate hydrocarbons are added to the mixture of carbon dioxide and inert gas to insure that the mixture injected into the formation is conditionally miscible at formation temperature and pressure.