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. 15, 2014
Filed:
Dec. 14, 2005
Applicants:
Hui Zhang, Sugar Land, TX (US);
Robert L. Horton, Sugar Land, TX (US);
Bethicia B. Prasek, The Woodlands, TX (US);
Mary L. K. Dimataris, Houston, TX (US);
Inventors:
Hui Zhang, Sugar Land, TX (US);
Robert L. Horton, Sugar Land, TX (US);
Bethicia B. Prasek, The Woodlands, TX (US);
Mary L. K. Dimataris, Houston, TX (US);
Assignee:
M-I L.L.C., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/00 (2006.01); C09K 8/16 (2006.01); C09K 8/74 (2006.01); C23F 11/18 (2006.01); C09K 8/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A composition and method for use in drilling or completing a subterranean well comprising a solidsfree, high-density brine composed of alkali metal polytungstate and blends thereof. These high-density brines are also useful as wellbore fluids and other non-oilfield fluids requiring high density properties.