Global Patent Index - EP 3219906 A1

EP 3219906 A1 20170920 - HYDRAULIC DELAY TOE VALVE METHOD

Title (en)

HYDRAULIC DELAY TOE VALVE METHOD

Title (de)

VERFAHREN FÜR HYDRAULISCHES VERZÖGERUNGSSPITZENVENTIL

Title (fr)

PROCÉDÉ DE CLAPET À PIED DE RETARD HYDRAULIQUE

Publication

EP 3219906 A1 20170920 (EN)

Application

EP 17165433 A 20160823

Priority

  • US 201514840473 A 20150831
  • EP 16185314 A 20160823

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 34/06 (2006.01); E21B 34/00 (2006.01); E21B 34/10 (2006.01); E21B 34/14 (2006.01)

CPC (source: CN EP)

E21B 17/00 (2013.01 - CN); E21B 34/063 (2013.01 - EP); E21B 34/085 (2013.01 - CN); E21B 34/108 (2013.01 - EP); E21B 34/14 (2013.01 - EP); 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 3138993 A2 20170308; EP 3138993 A3 20170419; EP 3138993 B1 20210120; CA 2939553 A1 20170228; CN 106481309 A 20170308; 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