EP 3138993 B1 20210120 - HYDRAULIC DELAY TOE VALVE SYSTEM AND METHOD
Title (en)
HYDRAULIC DELAY TOE VALVE SYSTEM AND METHOD
Title (de)
HYDRAULISCHES VERZÖGERUNGSSPITZENVENTILSYSTEM UND VERFAHREN
Title (fr)
SYSTÈME ET PROCÉDÉ DE SOUPAPE D'ORTEIL DE RETARD HYDRAULIQUE
Publication
Application
Priority
US 201514840473 A 20150831
Abstract (en)
[origin: EP3138993A2] An apparatus and method for providing a time delay in injection of pressured fluid into a geologic formation. In one aspect the invention is a toe valve activated by fluid pressure that opens ports after a predetermined time interval to allow fluid to pass from a well casing to a formation. The controlled time delay enables casing integrity testing before fluid is passed through the ports. This time delay also allows multiple valves to be used in the same well casing and provide a focused jetting action to better penetrate a concrete casing lining.
IPC 8 full level
E21B 34/06 (2006.01); E21B 34/10 (2006.01); E21B 34/14 (2006.01)
CPC (source: CN EP US)
E21B 17/00 (2013.01 - CN); E21B 34/063 (2013.01 - EP US); E21B 34/085 (2013.01 - CN); E21B 34/108 (2013.01 - EP); E21B 43/20 (2013.01 - CN); E21B 34/14 (2013.01 - CN EP US); E21B 2200/06 (2020.05 - EP)
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 3138993 A2 20170308; EP 3138993 A3 20170419; EP 3138993 B1 20210120; CA 2939553 A1 20170228; CA 2939553 C 20231003; CN 106481309 A 20170308; CN 106481309 B 20210507; EP 3219906 A1 20170920; EP 3219906 B1 20191009
DOCDB simple family (application)
EP 16185314 A 20160823; CA 2939553 A 20160822; CN 201610780139 A 20160830; EP 17165433 A 20160823