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. 06, 2018
Filed:
May. 22, 2015
Weatherford Technology Holdings, Llc, Houston, TX (US);
Bryce McNabb, Spruce Grove, CA;
Jozeph Robert Marcin, Spruce Grove, CA;
Andrew J. Hanson, Edmonton, CA;
James MacTavish, Edmonton, CA;
Corey Kshyk, Edmonton, CA;
Weatherford Technology Holdings, LLC, Houston, TX (US);
Abstract
A stage tool includes an isolation mechanism for isolating the lower bore of a completion string. The isolation mechanism is initially in a deactivated configuration until sufficient hydraulic pressure is applied, at which time, the isolating mechanism is activated to isolate the lower bore from cement ingress. Concurrently or subsequently, a stage tool may be opened to facilitate cementing of an annulus between the completion string and the wellbore. After cementing, the isolation mechanism, or portions thereof, may be drilled out to re-establish flow through the stage tool.