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:
Feb. 10, 1981
Filed:
May. 17, 1979
Applicant:
Inventor:
Joseph C Allen, Bellaire, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166274 ; 166302 ;
Abstract
An improved miscible displacement oil recovery process, and particularly a vertical downward gas driven miscible blanket oil recovery process is disclosed. Reduction of temperature in the portion of the reservoir where miscible displacement is occurring reduces the pressure required to attain miscibility with a specified solvent-dry gas injection mixture; or at constant pressure, reduces the amount of solvent required to be injected to achieve a condition of miscibility. Cooling is achieved by chilling the solvent prior to injecting it into the reservoir, or cooling the high pressure dry gas injected into the reservoir, or both.