EP 3494282 B1 20210421 - COILED TUBING ARRANGEMENT FOR WELLBORE UNLOADING
Title (en)
COILED TUBING ARRANGEMENT FOR WELLBORE UNLOADING
Title (de)
GEWICKELTE ROHRLEITUNGSANORDNUNG ZUR BOHRLOCHENTLASTUNG
Title (fr)
DISPOSITIF DE TUBAGE ENROULÉ POUR LE DÉCHARGEMENT DE PUITS DE FORAGE
Publication
Application
Priority
US 2016045558 W 20160804
Abstract (en)
[origin: WO2018026370A1] A wellbore unloading arrangement for removal of debris from a wellbore. The unloading arrangement includes an unloading bottom hole assembly which can inject both nitrogen and a liquid as well as draw debris into a flowbore for transmission to surface. Nitrogen injection allows unloading at greater depths.
IPC 8 full level
E21B 37/00 (2006.01); E21B 17/20 (2006.01); E21B 19/22 (2006.01); E21B 37/06 (2006.01); E21B 37/08 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP)
E21B 17/203 (2013.01); E21B 19/22 (2013.01); E21B 37/08 (2013.01)
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
DOCDB simple family (publication)
WO 2018026370 A1 20180208; BR 112019001850 A2 20190507; BR 112019001850 B1 20220823; EP 3494282 A1 20190612; EP 3494282 A4 20200325; EP 3494282 B1 20210421; MY 197513 A 20230619; SA 519401010 B1 20230117
DOCDB simple family (application)
US 2016045558 W 20160804; BR 112019001850 A 20160804; EP 16911774 A 20160804; MY PI2019000495 A 20160804; SA 519401010 A 20190202