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. 04, 2017
Filed:
Apr. 01, 2016
James C. Ferrell, Jr., Brookshire, TX (US);
Lauren T. Gallagher, Katy, TX (US);
Bilal H. Bazzi, Irving, TX (US);
James C. Ferrell, Jr., Brookshire, TX (US);
Lauren T. Gallagher, Katy, TX (US);
Bilal H. Bazzi, Irving, TX (US);
FRITZ INDUSTRIES, INC. A CORPORATION OF TEXAS, Dallas, TX (US);
Abstract
A hydraulic well cementing composition is disclosed. The well cementing composition contains a hydraulic cement and a fluid loss additive. The fluid loss additive is the polymerization reaction product of a two vinylamide monomers, wherein the polymerization reaction is conducted in the presence of a molecular weight control agent. One of the vinylamide monomers includes a sulfonic acid function, the second vinylamide monomer does not include a sulfonic acid function. The fluid loss additive controls fluid loss at temperatures up to 350° F.