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:
Oct. 29, 1985
Filed:
Jul. 18, 1983
Applicant:
Inventors:
Hiroshi Morita, Chiba, JP;
Yasuyuki Kawada, Funabashi, JP;
Junichi Yamada, Narashino, JP;
Toshiyuki Ukigai, Chiba, JP;
Assignee:
Lion Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166274 ; 166275 ; 252 / ; 252555 ;
Abstract
A micellar slug for use in the recovery of oil, the slug containing a hydrocarbon, an aqueous medium, a surfactant, and a cosurfactant. The surfactant contains as an essential component (a) an internal olefin sulfonate or sulfonates having 10 to 30 carbon atoms and (b) an alpha-olefin sulfonate or sulfonates having 10 to 30 carbon atoms. This micellar slug has a sufficiently low interfacial tension, good salinity tolerance, hard-water resistance, ability to maintain the micro-emulsion against change in the composition of the micro-emulsion, and mobility controlled viscosity.