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:
May. 25, 1993
Filed:
Oct. 07, 1991
Applicant:
Inventors:
Daniel H Emmons, Rosenberg, TX (US);
Dodd W Fong, Naperville, IL (US);
Mary A Kinsella, Manhattan, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210700 ; 166310 ; 166902 ; 210701 ; 252180 ;
Abstract
A method of removing from and preventing scale from depositing in underground petroleum containing formations and upon equipment used to inject high brine scale forming waters into such formations which comprises treating such waters with a scale inhibiting amount of an acrylic acid polymer which contains from 0-95 mole percent of acrylamide and from 1-30 mole percent of amido C.sub.1 -C.sub.6 alkyl phosphonate groups from the group consisting of: