EP 3997305 A4 20230726 - A DEVICE FOR TREATING A BOTTOM-HOLE FORMATION WELLBORE
Title (en)
A DEVICE FOR TREATING A BOTTOM-HOLE FORMATION WELLBORE
Title (de)
VORRICHTUNG ZUR BEHANDLUNG EINES BOHRLOCHS MIT BODENBOHRUNGSBILDUNG
Title (fr)
DISPOSITIF DE TRAITEMENT D'UN PUITS DE FORAGE DE FORMATION DE FOND DE TROU
Publication
Application
Priority
CA 2019050970 W 20190712
Abstract (en)
[origin: WO2021007645A1] A device for treating a bottom-hole formation of a wellbore comprises a firing head and seal block assembly at a proximal end thereof and a bullnose assembly at a distal end thereof. A carrier tube extends between the firing head and seal block assembly and the bullnose assembly. The carrier tube contains a combustible chemical composition which generates hydrochloric acid gas or hydrofluoric acid gas or a combination thereof when combusted. A dispersion tube extends from the carrier tube. The dispersion tube has a lateral opening. The lateral opening may be a slot or an aperture. There is a charge wire electrically connecting the firing head and sealing block assembly to the combustible chemical composition.
IPC 8 full level
E21B 43/27 (2006.01); E21B 43/22 (2006.01); E21B 43/28 (2006.01); E21B 43/285 (2006.01)
CPC (source: EP IL US)
E21B 36/008 (2013.01 - US); E21B 37/00 (2013.01 - US); E21B 37/06 (2013.01 - EP IL); E21B 37/08 (2013.01 - EP IL); E21B 43/255 (2013.01 - EP IL)
Citation (search report)
- [YA] US 2012199351 A1 20120809 - ROBERTSON MICHAEL C [US]
- [YA] CA 2716975 C 20180501 - LAMROCK CANADA INCORPORATED [CA]
- [A] RU 2329374 C2 20080720 - KZ G EHNERGETICHESKIJ UNI KGEH [RU]
- [A] US 3076507 A 19630205 - SWEETMAN WILLIAM G
- [A] US 4352397 A 19821005 - CHRISTOPHER GLENN B
- See also references of WO 2021007645A1
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 2021007645 A1 20210121; AU 2019457059 A1 20220303; BR 112022000567 A2 20220315; CA 3143625 A1 20210121; CO 2022001421 A2 20220429; EC SP22002883 A 20220429; EP 3997305 A1 20220518; EP 3997305 A4 20230726; IL 289755 A 20220701; PE 20221246 A1 20220815; US 2022259945 A1 20220818
DOCDB simple family (application)
CA 2019050970 W 20190712; AU 2019457059 A 20190712; BR 112022000567 A 20190712; CA 3143625 A 20190712; CO 2022001421 A 20220211; EC DI202202883 A 20220112; EP 19937754 A 20190712; IL 28975522 A 20220111; PE 2022000058 A 20190712; US 201917597594 A 20190712