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:
Apr. 22, 1997
Filed:
Jan. 21, 1993
Applicant:
Inventor:
Richard J Dyer, Midland, TX (US);
Assignee:
Nowsco Well Service, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
507259 ; 507261 ; 507266 ; 507923 ; 507930 ; 507933 ; 507934 ;
Abstract
This invention relates to anionic compositions, containing an alkyl aryl sulfonic acid or salt thereof, a nonethoxylated glycol and an acetylenic alcohol in an alkyl alcohol solvent, that have proved effective for controlling sludge and emulsion formation during acid stimulation and treatment of hydrocarbon wells.