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:
Aug. 27, 2019
Filed:
Nov. 06, 2015
Weatherford Technology Holdings, Llc, Houston, TX (US);
Dick S. Gonzalez, Spring, TX (US);
Cesar G. Garcia, Katy, TX (US);
Weatherford Technology Holdings, LLC, Houston, TX (US);
Abstract
A downhole tool is responsive to passing objects and applied fluid pressure. A plugless valve in the tool is operable from an unobstructed condition to an obstructed condition unobstructing the tool's bore to an obstructed condition obstructing the tool's bore to the applied fluid pressure. An indexer counts the objects passing through the tool's bore and permits operation of the plugless valve from the unobstructed to the obstructed condition in response to the counted number. The applied fluid pressure in the bore obstructed by the plugless valve can then communicate outside the tool via at least one port. The plugless valve can have a movable insert that moves relative to a flapper. The indexer can use ratcheting dogs, collet, J-slot, electronic sensor, and other components to count the passing objects.