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:
Feb. 19, 2019
Filed:
Jul. 13, 2016
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Steven Nicholas Hill, Houston, TX (US);
Geoffrey Pinard, Missouri City, TX (US);
Megan Laura Buchheit, Houston, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01);
U.S. Cl.
CPC ...
E21B 34/14 (2013.01);
Abstract
A downhole tool in accordance to aspects of the disclosure includes a housing forming a bore to convey a wellbore fluid, an actuating piston moveably disposed in a cylinder located in the housing adjacent to the bore and a barrier fluid isolating the actuating piston from the bore. The downhole tool may include a compensator piston in communication with the barrier fluid and the bore that is moveable to balance the pressure between the barrier fluid and the bore.