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:
Mar. 22, 1977
Filed:
Mar. 27, 1975
Mark A Plummer, Littleton, CO (US);
Donald E Schroeder, Jr, Littleton, CO (US);
Wayne O Roszelle, Littleton, CO (US);
Marathon Oil Company, Findlay, OH (US);
Abstract
Flooding of a subterranean formation with micellar dispersions containing petroleum sulfonates obtained by sulfonating whole or topped crude oil is improved through the use of a micellar dispersion of a predetermined viscosity containing an amount of cosurfactant in excess of that required to cause the micellar dispersion to have the highest viscosity possible for the particular micellar dispersion with the particular cosurfactant used. Preferably, the cosurfactant is an alcohol and the cosurfactant concentration is sufficiently high to control the micellar dispersion to have a predetermined mobility when injected into a hydrocarbon-bearing formation.