EP 2294279 A4 20151118 - DOWNHOLE SUB WITH HYDRAULICALLY ACTUABLE SLEEVE VALVE
Title (en)
DOWNHOLE SUB WITH HYDRAULICALLY ACTUABLE SLEEVE VALVE
Title (de)
BOHRLOCH-SUB MIT HYDRAULISCH BETÄTIGBAREM SCHIEBERVENTIL
Title (fr)
RACCORD DOUBLE FEMELLE DE FOND DE PUITS AVEC SOUPAPE À MANCHON ACTIONNABLE DE FAÇON HYDRAULIQUE
Publication
Application
Priority
- CA 2009000599 W 20090429
- US 4879708 P 20080429
- US 40518509 A 20090316
Abstract (en)
[origin: WO2009132462A1] A method for opening a port through the wall of a ported sub including: providing a sub with a port through its tubular side wall; providing a hydraulically actuable valve to cover the port, the valve being actuable to move away from a position covering the port to thereby open the port; increasing pressure within the sub to create a pressure differential across the valve to move the valve toward the low pressure side, while the port remains closed by the valve; thereafter, reducing pressure within the sub to reduce the pressure differential; and driving the valve to move it away from a position covering the port.
IPC 8 full level
E21B 34/14 (2006.01); E21B 23/00 (2006.01); E21B 33/126 (2006.01); E21B 34/00 (2006.01); E21B 34/10 (2006.01)
CPC (source: EP)
E21B 23/006 (2013.01); E21B 34/10 (2013.01); E21B 34/103 (2013.01); E21B 2200/06 (2020.05)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 2009132462A1
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2009132462 A1 20091105; AU 2009242942 A1 20091105; AU 2009242942 B2 20140731; CA 2719561 A1 20091105; EP 2294279 A1 20110316; EP 2294279 A4 20151118
DOCDB simple family (application)
CA 2009000599 W 20090429; AU 2009242942 A 20090429; CA 2719561 A 20090429; EP 09737604 A 20090429