Title (en)

DOWNHOLE METHOD

Title (de)

BOHRLOCHVERFAHREN

Title (fr)

PROCÉDÉ DE FOND DE TROU

Publication

EP 4095347 A1 20221130 (EN)

Application

EP 21176239 A 20210527

Priority

EP 21176239 A 20210527

Abstract (en)

A downhole method for providing isolation at a predetermined position in an existing well having a top and a first well tubular metal structure arranged in a wellbore, the first well tubular metal structure having a longitudinal extension, comprising inserting a downhole tool comprising a bit on a projection part in the first well tubular metal structure, positioning the downhole tool opposite the predetermined position, separating a first section/upper part of the first well tubular metal structure from a second section/lower part of the first well tubular metal structure by machining into and along a circumference of the first well tubular metal structure, moving the downhole tool a predetermined distance along the longitudinal extension in the first section of the first well tubular metal structure to a second position above the predetermined position, and separating a first part of the first section of the first well tubular metal structure from a second part of the first section of the first well tubular metal structure by machining into and along a circumference of the first well tubular metal structure, providing an uncased opening between the second part of the first section and the second section. The invention also relates to a downhole system for performing the downhole method.

IPC 8 full level

E21B 29/00 (2006.01); E21B 33/12 (2006.01)

CPC (source: EP)

E21B 29/005 (2013.01); E21B 33/12 (2013.01)

Citation (search report)

• [XAI] US 2020217159 A1 20200709 - KRÜGER CHRISTIAN [CH]
• [X] US 2020217170 A1 20200709 - KRÜGER CHRISTIAN [CH]
• [X] US 6478088 B1 20021112 - HANSEN HENNING [NO], et al
• [A] US 2020072009 A1 20200305 - FAIRWEATHER ALAN [GB]
• [A] US 2018135372 A1 20180517 - DEGEARE JOSEPH [US], et al
• [A] GB 2569566 A 20190626 - ARDYNE HOLDINGS LTD [GB]
• [A] US 2019003280 A1 20190103 - WITT JOSEPH W [US], et al

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4095347 A1 20221130; CN 117377808 A 20240109

DOCDB simple family (application)

EP 21176239 A 20210527; CN 202280032007 A 20220511