Invention Grant
- Patent Title: Downhole method and system for providing zonal isolation with annular barrier expanded from within and through well tubular metal structure
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Application No.: US16735934Application Date: 2020-01-07
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Publication No.: US11261690B2Publication Date: 2022-03-01
- Inventor: Christian Krüger
- Applicant: Welltec A/S
- Applicant Address: DK Allerød
- Assignee: Welltec A/S
- Current Assignee: Welltec A/S
- Current Assignee Address: DK Allerød
- Agency: Nixon & Vanderhye P.C.
- Priority: EP19150862 20190108,EP19201290 20191003
- Main IPC: E21B33/12
- IPC: E21B33/12 ; E21B29/00
Abstract:
The present invention relates to a downhole method for providing a zonal isolation at a predetermined position in an annulus between a wall of a borehole and a well tubular metal structure having a longitudinal extension in an existing well, comprising inserting a downhole tool in the well tubular metal structure, positioning the downhole tool opposite the predetermined position, separating a first section of the well tubular metal structure from a second section of the well tubular metal structure by machining into and along a circumference of the well tubular metal structure, inserting an unexpanded annular barrier between the first section and the second section, and expanding the annular barrier for providing zonal isolation at the predetermined position.
Public/Granted literature
- US20200217170A1 DOWNHOLE METHOD Public/Granted day:2020-07-09
Information query
