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:
Aug. 08, 2006
Filed:
Apr. 15, 2002
Shih-ruey T. Chen, Pittsburgh, PA (US);
Jiten Chatterji, Duncan, OK (US);
Valentino L. Devito, Pittsburgh, PA (US);
Randy J. Loeffler, Carnegie, PA (US);
Kevin W. Frederick, Evans City, PA (US);
Kevin W. Smith, McMurray, PA (US);
Shih-Ruey T. Chen, Pittsburgh, PA (US);
Jiten Chatterji, Duncan, OK (US);
Valentino L. DeVito, Pittsburgh, PA (US);
Randy J. Loeffler, Carnegie, PA (US);
Kevin W. Frederick, Evans City, PA (US);
Kevin W. Smith, McMurray, PA (US);
WSP Chemicals & Technology, L.L.C., Ambridge, PA (US);
Abstract
The present invention provides compositions of treating subterranean zones penetrated by well bores in primary well cementing operations, well completion operations, production stimulation treatments and the like. The invention includes aqueous well treating fluids comprised of water and a water soluble polymer complex fluid loss control additive. Preferred polymer complexes comprise water-soluble polymers made in the presence of hydroxyethylcellulose.