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:
Apr. 02, 2024
Filed:
May. 23, 2020
Applicant:
Ardyne Holdings Limited, Aberdeen, GB;
Inventors:
Assignee:
ARDYNE HOLDINGS LIMITED, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 31/16 (2006.01); E21B 29/00 (2006.01); E21B 34/14 (2006.01);
U.S. Cl.
CPC ...
E21B 31/16 (2013.01); E21B 29/002 (2013.01); E21B 34/142 (2020.05);
Abstract
A downhole actuator () includes a piston () within a chamber () on which fluid can act on either side to hydraulically activate the actuator. A hydrostatic equilibrium device () and a valve () are mounted around the hydraulic actuator. With a radial port () of the hydrostatic equilibrium device closed and the valve closed to seal the string, pumping fluid through the string operates the actuator. Pressure overbalance prevents movement of the piston (). The radial port () is opened to drain fluid from the string until equilibrium is reached with the annular volume and the piston () can be moved.