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:
Feb. 21, 2017
Filed:
Jun. 19, 2013
Dow Global Technologies Llc, Midland, MI (US);
Aleksandr T. Gamble, Midland, MI (US);
Cole A. Witham, Pearland, TX (US);
Michael K. Poindexter, Sugar Land, TX (US);
Felipe A. Donate, Midland, MI (US);
Kyle R. Essenmacher, Midland, MI (US);
Stephen W. King, League City, TX (US);
John Beckerdite, Lake Jackson, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent having the formula: (Formula I should be inserted here.) wherein R is hydrogen or an alkyl group having 1 to 12 carbons, Ris an alkylene group having 1 to 12 carbons, and Ris an alkyl group having 1 to 12 carbons. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids.