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:
Jun. 28, 2011
Filed:
Feb. 26, 2007
Enrique Lopez, Midland, TX (US);
Dean P. Olson, Midland, TX (US);
Wayman Hunter, The Woodlands, TX (US);
Enrique Lopez, Midland, TX (US);
Dean P. Olson, Midland, TX (US);
Wayman Hunter, The Woodlands, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A cement mix for cementing the well casing within a wellbore which contains a synergistic blend of an alkali metasilicate and/or alkali silicate, aluminum silicate and either silica fume or micro silica quartz along with a Portland cement. The cement mix, when combined with mix water, may render a cementitious slurry having a density less than or equal to 11.5 pounds per gallon (ppg); the amount of mix water in the cementitious slurry being between from about 200 to about 560 percent by weight of cement (BWOC). The compressive strength of such cementitious slurries, when cured, is in excess of 100 psi, more typically in excess of 200 psi, after 72 hours at 130° F.