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. 22, 1977
Filed:
May. 24, 1976
Applicant:
Inventors:
William B Braden, Jr, Houston, TX (US);
Kenoth H Flournoy, Houston, TX (US);
Assignee:
Texaco Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166274 ; 166273 ; 252 / ;
Abstract
A novel, thickened, miscible flooding medium to displace petroleum in subterranean reservoirs is a dispersion of light hydrocarbons, water and a surfactant system. The water may have from about 1500 to 12,000 parts per million polyvalent ions such as calcium and/or magnesium. The surfactant system comprises a water soluble salt of an alkyl or an alkylaryl sulfonate plus a water soluble salt of an alkyl or alkylaryl polyethoxy sulfate anionic surfactant plus a nonionic surfactant such as a polyethoxylated alkyl phenol, a polyethoxylated aliphatic alcohol or a fatty acid mono or dialkanolamide.