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. 28, 2009
Filed:
Feb. 27, 2008
Applicants:
William J. Heilman, Houston, TX (US);
Asoke K. Deysarkar, Houston, TX (US);
Inventors:
William J. Heilman, Houston, TX (US);
Asoke K. Deysarkar, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/60 (2006.01); C09K 8/588 (2006.01);
U.S. Cl.
CPC ...
Abstract
Polymer suspensions prepared with non-aqueous, oil-free carrier fluids, for use in oil or gas well servicing. The polymer suspensions typically comprise a hydrophilic polymer, an organic clay, a stabilizer, and a carrier fluid selected from propylene glycol and butylene glycol. The addition of isopropyl alcohol, a polar activator, lowers the viscosity of the suspension. The further addition of neopentyl glycol further lowers viscosity and improves cross-linking of the polymer. The composition is both stable and environmentally acceptable.