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:
Nov. 17, 2020
Filed:
Apr. 10, 2019
Welltec Oilfield Solutions Ag, Zug, CH;
Johnny Bårdsen, Zug, CH;
Frode Strømsvik, Zug, CH;
Welltec Oilfield Solutions AG, Zug, CH;
Abstract
The present invention relates to a downhole straddle system for sealing off a damaged zone in a well tubular metal structure in a well having a top, comprising: a straddle assembly having a first end, a second end closest to the top, an inner face, a first hydraulic expandable annular barrier and a second hydraulic expandable annular barrier, a downhole tool assembly having a hydraulic operated deployment tool for releasable connecting the downhole tool assembly to the second end of the straddle assembly, the downhole tool assembly further comprising a first sealing unit arranged above the first hydraulic expandable annular barrier and the second hydraulic expandable annular barrier and configured to seal against the inner face of the straddle assembly, and a closing unit configured to close the first end of the straddle assembly, wherein the downhole tool assembly further comprising a sealing device arranged above the deployment tool and the first sealing unit, the sealing device has an annular sealing element having a first outer diameter in a first condition and a second outer diameter being larger than the first outer diameter in a second condition for sealing against an inner face of the well tubular metal structure, the sealing device comprises a fluid channel configured to fluidly connect an inside of the straddle assembly with the well tubular metal structure above the sealing device when being in the second condition for expanding the first hydraulic expandable annular barrier and the second hydraulic expandable annular barrier. Finally, the invention relates to a downhole well system and a repairing method.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile