EP 2488720 A2 20120822 - PERFORATING GUN HAVING SELF-CLOSING PENETRATION HOLES
Title (en)
PERFORATING GUN HAVING SELF-CLOSING PENETRATION HOLES
Title (de)
PERFORATIONSKANONE MIT SELBSTVERSCHLIESSENDEN DURCHSCHUSSLÖCHERN
Title (fr)
CANON DE PERFORATION À TROUS DE TIR SE REFERMANT AUTOMATIQUEMENT
Publication
Application
Priority
- DE 102009049290 A 20091013
- EP 2010006212 W 20101012
Abstract (en)
[origin: CA2777427A1] The invention relates to a perforating gun having an outer gun barrel, inside of which an inner barrel is coaxially arranged, carrying perforators that can be ignited by means of a detonating cord leading through the gun barrel and, after ignition, pierce the gun barrel in order to form penetration holes, wherein means are provided for automatically closing the penetration holes after the blast, said means being a swellable medium. In order to ensure that the swellable medium requires little space in the perforating gun and can be easily integrated into the perforating gun, according to the invention the swellable medium is disposed in a laminary manner inside the perforating gun.
IPC 8 full level
E21B 43/119 (2006.01)
CPC (source: EP US)
E21B 43/117 (2013.01 - EP US); E21B 43/119 (2013.01 - EP US)
Citation (search report)
See references of WO 2011045021A2
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)
DE 102010048044 A1 20110414; AR 078618 A1 20111123; CA 2777427 A1 20110421; EP 2488720 A2 20120822; US 2012198988 A1 20120809; WO 2011045021 A2 20110421; WO 2011045021 A3 20111124
DOCDB simple family (application)
DE 102010048044 A 20101012; AR P100103730 A 20101013; CA 2777427 A 20101012; EP 10790718 A 20101012; EP 2010006212 W 20101012; US 201013501514 A 20101012