EP 3221548 A1 20170927 - CIRCULATING SUB WITH ACTIVATION MECHANISM AND A METHOD THEREOF
Title (en)
CIRCULATING SUB WITH ACTIVATION MECHANISM AND A METHOD THEREOF
Title (de)
SPÜLUNGSANSATZSTÜCK MIT AKTIVIERUNGSMECHANISMUS UND VERFAHREN DAFÜR
Title (fr)
RACCORD DE CIRCULATION AVEC MÉCANISME D'ACTIVATION ET PROCÉDÉ ASSOCIÉ
Publication
Application
Priority
- DK PA201470715 A 20141120
- DK 2015050356 W 20151120
Abstract (en)
[origin: WO2016078671A1] The present invention relates to an activation method, an activation mechanism and a downhole tool comprising the activation mechanism. The activation mechanism com- prises a pressure switch for turning power to the electrical components, a control unit connected to a pressure sensor for sensing the internal pressure of the drilling fluid located in a first fluid conduit. The control unit controls an actuator unit connected to a moveable valve element. The actuator unit moves the valve element from a closed position when activated. A seat for the valve element is arranged relative to a second fluid conduit so that the valve element closes the second conduit when it is placed in its seat. This provides a very fast and accurate activation method that involves the use of balls or RFID tags. Furthermore, the downhole tool can be activated even if no actual flow is passing through the tool.
IPC 8 full level
E21B 21/08 (2006.01)
CPC (source: EP RU US)
E21B 21/103 (2013.01 - EP RU US); E21B 34/066 (2013.01 - US); E21B 47/06 (2013.01 - US)
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)
WO 2016078671 A1 20160526; CA 2968427 A1 20160526; DK 178835 B1 20170306; DK 201470715 A1 20160530; EP 3221548 A1 20170927; EP 3221548 A4 20180711; RU 2017121271 A 20181220; RU 2017121271 A3 20190717; RU 2711522 C2 20200117; US 2018328141 A1 20181115
DOCDB simple family (application)
DK 2015050356 W 20151120; CA 2968427 A 20151120; DK PA201470715 A 20141120; EP 15860564 A 20151120; RU 2017121271 A 20151120; US 201515527871 A 20151120