EP 3947908 A4 20230118 - DIAMOND HIGH TEMPERATURE SHEAR VALVE DESIGNED TO BE USED IN EXTREME THERMAL ENVIRONMENTS
Title (en)
DIAMOND HIGH TEMPERATURE SHEAR VALVE DESIGNED TO BE USED IN EXTREME THERMAL ENVIRONMENTS
Title (de)
HOCHTEMPERATURSCHERVENTIL AUS DIAMANT ZUR VERWENDUNG IN EXTREMEN THERMISCHEN UMGEBUNGEN
Title (fr)
VANNE À CISAILLEMENT HAUTE TEMPÉRATURE EN LOSANGE DESTINÉE À ÊTRE UTILISÉE DANS DES ENVIRONNEMENTS THERMIQUES EXTRÊMES
Publication
Application
Priority
- US 201916365998 A 20190327
- US 2020024840 W 20200326
Abstract (en)
[origin: EP3715582A1] A control valve assembly (48) for a downhole wellbore (21) including a body (60) formed partially from a magnetic material. A plunger (160) is moveably mounted in the body (60). A portion (164) of the plunger (160) is formed from a magnetic material. A magnetic circuit having a gap (171) is arranged within the control valve assembly (48). The portion (64) of the body (60) formed from a magnetic material defines a first portion (164) of the magnetic circuit and the portion of the plunger (160) formed from magnetic material forms another portion of the magnetic circuit. A solenoid (120) is mounted at the body (60) and is selectively activated to create a magnetic field across the gap (171) in the magnetic circuit causing the plunger (160) to move thereby narrowing the gap (171) to produce a pressure pulse in the wellbore (21).
IPC 8 full level
E21B 47/24 (2012.01)
CPC (source: EP)
E21B 47/24 (2020.05); E21B 34/066 (2013.01)
Citation (search report)
- [XYI] WO 2017156107 A1 20170914 - BAKER HUGHES INC [US]
- [X] US 2001048091 A1 20011206 - ENOMOTO SHIGEIKU [JP], et al
- [YA] WO 2016187253 A1 20161124 - BAKER HUGHES INC [US]
- See also references of WO 2020198420A1
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 3715582 A1 20200930; EP 3715582 B1 20231213; EP 3947908 A1 20220209; EP 3947908 A4 20230118; WO 2020198420 A1 20201001
DOCDB simple family (application)
EP 20152711 A 20200120; EP 20777792 A 20200326; US 2020024840 W 20200326