EP 2336485 A3 20140312 - Continuous slow dissolving chemical treatment for oil and gas wells
Title (en)
Continuous slow dissolving chemical treatment for oil and gas wells
Title (de)
Durchgehende chemische Behandlung mit langsamer Auflösung für Öl- und Gasbohrlöcher
Title (fr)
Traitement chimique par dissolution lente en continu pour puits de pétrole et de gaz
Publication
Application
Priority
- US 28575209 P 20091211
- US 90021810 A 20101007
Abstract (en)
[origin: EP2336485A2] The invention relates to dispensing slow release chemicals for inhibiting the formation of scale, corrosion or other precipitates in hydrocarbon wells. The chemical is provided into a dispenser positioned for at least nearly continuous exposure to liquid preferably in the active water phase. The active water phase is generally just below the inlet into production tubing.
IPC 8 full level
E21B 37/06 (2006.01); E21B 27/02 (2006.01); E21B 43/12 (2006.01)
CPC (source: EP US)
E21B 27/02 (2013.01 - EP US); E21B 37/06 (2013.01 - EP US)
Citation (search report)
- [XI] US 4291763 A 19810929 - SINGER MORTIMER
- [A] US 4790386 A 19881213 - JOHNSON IRVIN D [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
DOCDB simple family (publication)
EP 2336485 A2 20110622; EP 2336485 A3 20140312; US 2011162841 A1 20110707; WO 2011071593 A1 20110616
DOCDB simple family (application)
EP 10190634 A 20101110; US 2010052064 W 20101008; US 90021810 A 20101007