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:
Sep. 07, 2004
Filed:
Apr. 03, 2002
Applicant:
Inventors:
Cecil C. Blair, East Bernard, TX (US);
Kin-Tai Chang, Sugar Land, TX (US);
Duane S. Treybig, Sugar Land, TX (US);
Kurt S. Gerken, Richmond, TX (US);
Assignee:
Nalco Energy Services, L.P., Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/326 ; C09K 3/00 ;
U.S. Cl.
CPC ...
E21B 4/326 ; C09K 3/00 ;
Abstract
A method of reducing friction resulting from turbulent flow in an aqueous fracturing fluid in an oil field fracturing process comprising adding to the aqueous fracturing fluid an effective friction-reducing amount of one or more dispersion polymers, wherein the dispersion polymer is composed of from about 5 to about 95 mole percent of one or more nonionic monomers and from about 95 to about 5 mole percent of one or more cationic or anionic monomers and has a molecular weight of at least 100,000.