EP 2728108 A1 20140507 - A downhole stimulation system and a drop device
Title (en)
A downhole stimulation system and a drop device
Title (de)
Bohrlochsystem und Fallvorrichtung
Title (fr)
Système de fond de trou et dispositif de chute
Publication
Application
Priority
EP 12190842 A 20121031
Abstract (en)
The present invention relates to a downhole system (100) for installation in a borehole (36) for creating a cased well (2). The downhole system comprises a plurality of casing sections (101) mounted to form a casing string (102), and a plurality of sleeves (3), each sleeve comprising a sliding sleeve part (103) and a tubular part (104) mounted as part of the casing string comprising at least one opening (32), the sliding sleeve part (103) being movable from a first position in which the sliding sleeve part closes the opening (32) to a second position in which the fluid is allowed to flow through the opening (32). Each sleeve (3) comprises a sleeve activation means adapted to move the sliding sleeve part (103) from the second position to the first position.
IPC 8 full level
E21B 33/127 (2006.01); E21B 34/14 (2006.01); E21B 43/14 (2006.01)
CPC (source: EP US)
E21B 33/127 (2013.01 - EP); E21B 34/142 (2020.05 - EP US); E21B 43/14 (2013.01 - EP); E21B 2200/06 (2020.05 - EP)
Citation (search report)
- [XYI] US 2012261127 A1 20121018 - ZHOU SHAOHUA [SA]
- [Y] US 2007289734 A1 20071220 - MCDONALD WILLIAM J [US], et al
- [X] US 2011284232 A1 20111124 - HUANG TIANPING [US]
- [A] US 2005230107 A1 20051020 - MCDANIEL BILLY W [US], et al
- [XYI] US 2006124310 A1 20060615 - LOPEZ DE CARDENAS JORGE [US], et al
- [Y] US 2005011678 A1 20050120 - AKINLADE MONSURU OLATUNJI [NL], et al
- [A] US 2011284240 A1 20111124 - CHEN KUO-CHIANG [US], et al
- [A] US 2012085538 A1 20120412 - GUERRERO JULIO C [US], et al
- [A] US 2011240301 A1 20111006 - ROBISON CLARK E [US], et al
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)
DOCDB simple family (application)
EP 12190842 A 20121031