EP 2513418 A1 20121024 - SYSTEM, METHOD AND ASSEMBLY FOR WELLBORE MAINTENANCE OPERATIONS
Title (en)
SYSTEM, METHOD AND ASSEMBLY FOR WELLBORE MAINTENANCE OPERATIONS
Title (de)
SYSTEM, VERFAHREN UND ANORDNUNG FÜR BOHRLOCHWARTUNGSOPERATIONEN
Title (fr)
SYSTÈME, PROCÉDÉ ET ENSEMBLE POUR OPÉRATIONS DE MAINTENANCE DE PUITS
Publication
Application
Priority
- US 28652009 P 20091215
- US 2010060541 W 20101215
Abstract (en)
[origin: WO2011084497A1] Methods for performing a wellbore maintenance operation on a system of wellbores used for improved oil recovery are disclosed. A plurality of wellbores are drilled and perforated to receive production fluids from a reservoir. The wellbores are fluidly connected to a production well that is drilled to a depth below the perforations of the wellbores. The production fluids drain and collect in the production well for delivery to the surface. A pump can be used for delivering the production fluids from the production well. During repair and maintenance operations, a fluid is injected into the production well for safely removing the pump components. The fluid is counterbalanced by the pressures in the connected wellbores such that the fluid does not rise above the perforations in the connected wellbores.
IPC 8 full level
E21B 43/20 (2006.01); F17D 3/00 (2006.01)
CPC (source: EP US)
E21B 43/12 (2013.01 - EP US); E21B 43/305 (2013.01 - EP US)
Citation (search report)
See references of WO 2011084497A1
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 2011084497 A1 20110714; CA 2784496 A1 20110714; CN 102741500 A 20121017; EA 201290503 A1 20121228; EP 2513418 A1 20121024; US 2011203792 A1 20110825
DOCDB simple family (application)
US 2010060541 W 20101215; CA 2784496 A 20101215; CN 201080062865 A 20101215; EA 201290503 A 20101215; EP 10842544 A 20101215; US 96850310 A 20101215