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:
Jun. 09, 1998
Filed:
Dec. 09, 1996
Applicant:
Inventors:
Assignee:
Halliburton Energy Services, Inc., Duncan, OK (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ; E21B / ; E21B / ;
U.S. Cl.
CPC ...
166279 ; 166307 ; 166308 ; 252332 ; 507255 ; 507259 ; 507265 ; 507266 ; 507923 ;
Abstract
The present invention provides microemulsion surfactant additives for use in aqueous well treating fluids to prevent the formation of stable emulsions and sludge when the aqueous treating fluids contact hydrocarbons. The additives are basically comprised of a solvent, a co-solvent, water, an aqueous liquid-hydrocarbon liquid de-emulsifying surfactant and a liquid hydrocarbon antisludging surfactant. Aqueous compositions including the additives and methods of treating subterranean formations or zones containing hydrocarbons using the compositions are also provided.