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. 01, 2016
Filed:
Apr. 13, 2015
Geodynamics, Inc., Millsap, TX (US);
Kevin R. George, Cleburne, TX (US);
Philip Martin Snider, Tomball, TX (US);
John T. Hardesty, Weatherford, TX (US);
Michael D. Wroblicky, Weatherford, TX (US);
James A. Rollins, Lipan, TX (US);
Nathan G. Clark, Mansfield, TX (US);
Jarrod Henry Pearson, Weatherford, TX (US);
David S. Wesson, Fort Worth, TX (US);
GEODYNAMICS, INC., Millsap, TX (US);
Abstract
A hydraulic time delay system and method in a wellbore tool is disclosed. The system/method includes an actuation mechanism which allows pressure to act on a functional piston in the wellbore tool. The movement of the piston is restrained by a partially or filled reservoir which is allowed to exhaust through a flow restriction element. The restriction element comprises standard metal tubing with a known inner diameter and is cut to an exact length as predicted by fluid dynamic modeling. A time delay and rate of piston movement desired for the downhole tool, between a trigger event such as pressure and a functional event, can be tuned with parameters that include the length and diameter of the tubing, reservoir fluid viscosity and number of tubes in parallel. In another embodiment, a secondary plugging element added to the reservoir controls the rate of piston movement and time delay.