EP 2702236 A2 20140305 - COLLAPSE SENSING CHECK VALVE
Title (en)
COLLAPSE SENSING CHECK VALVE
Title (de)
RÜCKSCHLAGVENTIL MIT EINSTURZSENSOR
Title (fr)
SOUPAPE ANTI-RETOUR SENSIBLE À L'EFFONDREMENT
Publication
Application
Priority
- US 201161481088 P 20110429
- US 2012035589 W 20120427
Abstract (en)
[origin: US2012273225A1] A method and apparatus for a pressure relief valve assembly. The valve assembly may be coupled to one or more casings and/or tubular members to control fluid communication therebetween. The valve assembly is a one-way valve assembly that relieves pressure within an annulus formed between adjacent casings and/or tubular members to prevent burst or collapse of the casings and/or tubular members. The valve assembly is resettable downhole.
IPC 8 full level
E21B 34/08 (2006.01); E21B 21/10 (2006.01)
CPC (source: EP US)
E21B 21/103 (2013.01 - EP US); E21B 34/08 (2013.01 - EP US); E21B 34/101 (2013.01 - US); E21B 34/103 (2013.01 - US); E21B 2200/06 (2020.05 - EP US)
Citation (search report)
See references of WO 2012149418A2
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)
US 2012273225 A1 20121101; AU 2012249426 A1 20131114; AU 2012249426 B2 20160204; BR 112013027632 A2 20170214; CA 2834227 A1 20121101; EP 2702236 A2 20140305; WO 2012149418 A2 20121101; WO 2012149418 A3 20131024
DOCDB simple family (application)
US 201213458192 A 20120427; AU 2012249426 A 20120427; BR 112013027632 A 20120427; CA 2834227 A 20120427; EP 12720344 A 20120427; US 2012035589 W 20120427