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:
Dec. 08, 2020
Filed:
Jul. 13, 2013
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Cole Witham, Pearland, TX (US);
Roger Kuhlman, Lake Jackson, TX (US);
Michael Poindexter, Sugar Land, TX (US);
Jorg Theuerkauf, Midland, MI (US);
Michael Radler, Saginaw, MI (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 8/46 (2006.01); C04B 18/22 (2006.01); C04B 28/02 (2006.01); C04B 18/28 (2006.01); C04B 40/06 (2006.01); C04B 18/02 (2006.01); C09K 8/487 (2006.01); E21B 33/138 (2006.01);
U.S. Cl.
CPC ...
C09K 8/46 (2013.01); C04B 18/022 (2013.01); C04B 40/0633 (2013.01); C09K 8/487 (2013.01); E21B 33/138 (2013.01);
Abstract
The present invention provides strategies for improved control of fluid loss, hydration, settling, and separation of aqueous cementing compositions over a wide temperature and time range. The present invention is based at least in part upon water-effusing particles used as additives for the compositions, wherein the particles are activated to control rheology when water soluble portions of the particles are released in the presence of water.