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:
Mar. 31, 2015
Filed:
Oct. 06, 2011
Applicants:
William Winfrid Fleckenstein, Lakewood, CO (US);
Todd Lance Flaska, Louisville, CO (US);
Inventors:
William Winfrid Fleckenstein, Lakewood, CO (US);
Todd Lance Flaska, Louisville, CO (US);
Assignee:
Colorado School of Mines, Golden, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01); E21B 43/14 (2006.01); E21B 34/06 (2006.01); E21B 43/26 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 43/14 (2013.01); E21B 34/063 (2013.01); E21B 34/14 (2013.01); E21B 43/26 (2013.01); E21B 2034/005 (2013.01);
Abstract
A downhole tool that selectively opens and closes an axial/lateral bore of a tubular string positioned in a wellbore used to produce hydrocarbons or other fluids. When integrated into a tubular string, the downhole tool allows individual producing zones within a wellbore to be isolated between stimulation stages while simultaneously allowing a selected formation to be accessed. The downhole tools and methods can be used in vertical or directional wells, and additionally in cased or open-hole wellbores.