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.

Date of Patent:
Mar. 09, 2021

Filed:

May. 31, 2017
Applicant:

Transocean Innovation Labs Ltd, George Town, KY;

Inventors:

Andrew Leach, Houston, TX (US);

Matthew Boike, Magnolia, TX (US);

Luis Rafael Pereira, Katy, TX (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/09 (2012.01); E21B 33/035 (2006.01); E21B 33/038 (2006.01); E21B 33/06 (2006.01); E21B 47/07 (2012.01); E21B 33/064 (2006.01); E21B 33/08 (2006.01);
U.S. Cl.
CPC ...
E21B 47/09 (2013.01); E21B 33/038 (2013.01); E21B 33/0355 (2013.01); E21B 33/062 (2013.01); E21B 33/064 (2013.01); E21B 33/085 (2013.01); E21B 47/07 (2020.05);
Abstract

This disclosure includes methods for testing hydraulically-actuated devices and related systems. Some hydraulically-actuated devices have a housing defining an interior volume and a piston disposed within the interior volume and dividing the interior volume into a first chamber and a second chamber, where the piston is movable relative to the housing between a maximum first position and a maximum second position in response to pressure differentials between the first and second chambers. Some methods include: (1) moving the piston to the first position by varying pressure within at least one of the first and second chambers such that pressure within the second chamber is higher than pressure within the first chamber; and (2) while the piston remains in the first position: (a) reducing pressure within the second chamber and/or increasing pressure within the first chamber; and (b) increasing pressure within the second chamber and/or decreasing pressure within the first chamber.


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