EP 2463477 B1 20180321 - System and method for operating multiple valves
Title (en)
System and method for operating multiple valves
Title (de)
System und Verfahren zur Bedienung mehrerer Ventile
Title (fr)
Système et procédé pour l'exploitation de plusieurs vannes
Publication
Application
Priority
- NO 20101748 A 20101213
- NO 20111679 A 20111209
Abstract (en)
[origin: EP2463477A1] A valve system for providing fluid flow through radial openings disposed along an axial length of a tubular. The tubular comprises at least one valve group containing at least two valves operable by one drop ball. An inset 302 e.g. of standard grade steel provided in a harder liner 301 in the opening provides an intermediate small opening for at least the time required to open all the remaining valves in the group. The small opening limits the pressure drop over the valve. When all valves are open, the insets 302 are eroded away by an abrasive material, e.g. a slurry used for hydraulic fracturing, and permanent full openings are created.
IPC 8 full level
E21B 34/14 (2006.01)
CPC (source: EP US)
E21B 34/142 (2020.05 - EP US); E21B 2200/04 (2020.05 - EP); E21B 2200/06 (2020.05 - EP)
Citation (examination)
- US 2006060352 A1 20060323 - VIDRINE WILLIAM L [US], et al
- US 2006196668 A1 20060907 - BURGE PHILIP [GB], et al
- WO 2006134446 A2 20061221 - LEE PAUL BERNARD [CA]
- US 6053250 A 20000425 - ECHOLS RALPH H [US]
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)
EP 2463477 A1 20120613; EP 2463477 B1 20180321; CA 2761477 A1 20120613; CA 2761477 C 20190122; NO 20111679 A1 20120614; NO 2463477 T3 20180818; NO 333111 B1 20130304
DOCDB simple family (application)
EP 11192992 A 20111212; CA 2761477 A 20111212; NO 11192992 A 20111212; NO 20111679 A 20111209