Global Patent Index - EP 3135855 A1

EP 3135855 A1 20170301 - 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

EP 3135855 A1 20170301 (EN)

Application

EP 16185315 A 20160823

Priority

US 201514841245 A 20150831

Abstract (en)

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 17/042 (2006.01); E21B 17/08 (2006.01); E21B 34/10 (2006.01); E21B 34/14 (2006.01)

CPC (source: CN EP US)

E21B 17/00 (2013.01 - CN); E21B 17/042 (2013.01 - EP); E21B 17/08 (2013.01 - EP); E21B 34/085 (2013.01 - CN); E21B 34/108 (2013.01 - EP); E21B 34/14 (2013.01 - CN EP US); E21B 43/20 (2013.01 - CN); E21B 2200/06 (2020.05 - EP)

Citation (applicant)

US 6763892 B2 20040720 - KASZUBA FRANK [CA]

Citation (search report)

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3135855 A1 20170301; CA 2939576 A1 20170228; CN 106481310 A 20170308

DOCDB simple family (application)

EP 16185315 A 20160823; CA 2939576 A 20160822; CN 201610780140 A 20160830