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:
Jul. 25, 2017
Filed:
Apr. 05, 2016
James C. Ferrell, Jr., Houston, TX (US);
Kurt O. Lindstrom, Forney, TX (US);
Luis M. Perales, Richardson, TX (US);
Hongfeng Ren, Rowlett, TX (US);
James C. Ferrell, Jr., Houston, TX (US);
Kurt O. Lindstrom, Forney, TX (US);
Luis M. Perales, Richardson, TX (US);
Hongfeng Ren, Rowlett, TX (US);
FRITZ INDUSTRIES, INC. A CORP. OF TEXAS, Dallas, TX (US);
Abstract
A hydraulic cementing composition and a method of making the same is disclosed. The composition is useful to form a sheath of hardened cement in the annular space between a well pipe disposed in a well bore and the walls of the well bore. The cementing composition is a mixture of dry ingredients comprising hydraulic cement and an additive to control the loss of fluid from an aqueous slurry containing the cementing composition. The fluid loss additive and a method of making the same is disclosed. The fluid loss additive is the reaction product of three chemical compounds each having an ethylene backbone and functional groups selected from carboxylates, hydrogen, anhydrides and combinations thereof.