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:
Sep. 07, 2021

Filed:

Dec. 11, 2018
Applicants:

Karsten Fuhst, Glesen, DE;

Volker Peters, Wienhausen, DE;

Christian Preiser, Wienhausen, DE;

Nils Schneider, Ehlershausen, DE;

Ingo Roders, Seelze, DE;

Natalja Wendt, Seelze, DE;

Sebastian Jung, Isernhagen, DE;

Thomas Kruspe, Wietzendorf, DE;

Inventors:

Karsten Fuhst, Glesen, DE;

Volker Peters, Wienhausen, DE;

Christian Preiser, Wienhausen, DE;

Nils Schneider, Ehlershausen, DE;

Ingo Roders, Seelze, DE;

Natalja Wendt, Seelze, DE;

Sebastian Jung, Isernhagen, DE;

Thomas Kruspe, Wietzendorf, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/12 (2006.01); E21B 23/04 (2006.01);
U.S. Cl.
CPC ...
E21B 33/1208 (2013.01); E21B 23/04 (2013.01); E21B 2200/01 (2020.05);
Abstract

A downhole tool including a body having a hydraulic fluid chamber, and a flexible multi-layer barrier impermeable to gas and water mounted at the body separating the hydraulic fluid chamber from fluids external to the body. The flexible multi-layer barrier including a first elastomeric layer, a second elastomeric layer, and a gas impermeable layer arranged between the first elastomeric layer and the second elastomeric layer, the gas impermeable layer being formed from a metal layer.


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