EP 3698015 A2 20200826 - A SYSTEM AND METHOD OF CLEANING AN ANNULAR AREA IN A WELL
Title (en)
A SYSTEM AND METHOD OF CLEANING AN ANNULAR AREA IN A WELL
Title (de)
SYSTEM UND VERFAHREN ZUR REINIGUNG EINES RINGFÖRMIGEN BEREICHS IN EINEM BOHRLOCH
Title (fr)
SYSTÈME ET PROCÉDÉ DE NETTOYAGE D'UNE ZONE ANNULAIRE DANS UN PUITS
Publication
Application
Priority
- NO 20171650 A 20171017
- NO 2018050247 W 20181017
Abstract (en)
[origin: WO2019078728A2] A system and method of cleaning an annular area in a well (2), comprising: - a first pipe body (4) and a surrounding second pipe body (6); - a first annulus (8) containing a clean fluid (10), and a surrounding second annulus (12) containing contaminants (14); - a plurality of sets of holes (22) formed through the pipe bodies (4, 6) and dispersed along a longitudinal section (L), each set of holes (22) comprising holes (22a, 22b) aligned substantially radially; and - a washing tool (26) positioned in the first pipe body (4) and comprising spaced apart flow guides (28a, 28b) configured to enclose of a limited number of sets of holes (22), the flow guides (28a, 28b) cooperating with an inside of the first pipe body (4) to form a confined pressure compartment (30) for the limited number of sets of holes (22) when operational in the well (2).
IPC 8 full level
E21B 37/08 (2006.01); E21B 21/00 (2006.01); E21B 33/13 (2006.01); E21B 37/00 (2006.01); E21B 43/114 (2006.01)
CPC (source: EP NO)
E21B 33/13 (2013.01 - EP NO); E21B 37/00 (2013.01 - EP NO); E21B 37/08 (2013.01 - EP NO); E21B 43/11 (2013.01 - EP); E21B 43/114 (2013.01 - NO)
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
DOCDB simple family (publication)
WO 2019078728 A2 20190425; WO 2019078728 A3 20190801; AU 2018351422 A1 20200305; AU 2018351422 B2 20210429; BR 112020004380 A2 20200908; DK 3698015 T3 20240617; EP 3698015 A2 20200826; EP 3698015 A4 20210714; EP 3698015 B1 20240522; NO 20171650 A1 20180301; NO 345810 B1 20210816
DOCDB simple family (application)
NO 2018050247 W 20181017; AU 2018351422 A 20181017; BR 112020004380 A 20181017; DK 18867925 T 20181017; EP 18867925 A 20181017; NO 20171650 A 20171017