EP 2748418 B1 20181024 - DOWNHOLE TESTER VALVE HAVING RAPID CHARGING CAPABILITIES AND METHOD FOR USE THEREOF
Title (en)
DOWNHOLE TESTER VALVE HAVING RAPID CHARGING CAPABILITIES AND METHOD FOR USE THEREOF
Title (de)
BOHRLOCHPRÜFVENTIL MIT SCHNELLER LADEFÄHIGKEIT UND VERWENDUNGSVERFAHREN
Title (fr)
VANNE DE TESTEUR DE FOND DE PUITS POSSÉDANT DES CAPACITÉS DE CHARGEMENT RAPIDE, ET PROCÉDÉ D'UTILISATION
Publication
Application
Priority
US 2011055021 W 20111006
Abstract (en)
[origin: WO2013052050A1] A downhole tester valve (100) includes a housing assembly (106) and a mandrel assembly (172, 174) that define therebetween an operating fluid chamber (176), a biasing fluid chamber (184) and a power fluid chamber (180). A valve assembly (126) disposed within the housing assembly (106) is operable between open and closed positions. A piston assembly (146) is operably associated with the valve assembly (126) such that annulus pressure entering the power fluid chamber (180) pressurizes operating fluid in the operating fluid chamber (176) which acts on the piston assembly (146) to shift the valve assembly (126) from the closed position to the open position and such that predetermined travel of the piston assembly (146) opens a bypass passageway (162) for the pressurized operating fluid to charge biasing fluid in the biasing fluid chamber (184), thereby enabling closure of the valve assembly (126) upon reducing annulus pressure by a predetermined amount.
IPC 8 full level
E21B 34/10 (2006.01); E21B 34/06 (2006.01)
CPC (source: EP US)
E21B 34/08 (2013.01 - EP US); E21B 34/10 (2013.01 - EP US); E21B 49/008 (2013.01 - EP US); E21B 2200/04 (2020.05 - EP 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)
WO 2013052050 A1 20130411; AU 2011378455 A1 20140424; AU 2011378455 B2 20150806; BR 112014008147 A2 20170411; EP 2748418 A1 20140702; EP 2748418 A4 20160511; EP 2748418 B1 20181024; US 2013087326 A1 20130411; US 8701778 B2 20140422
DOCDB simple family (application)
US 2011055021 W 20111006; AU 2011378455 A 20111006; BR 112014008147 A 20111006; EP 11873594 A 20111006; US 201213626618 A 20120925