EP 0416915 B1 19950125 - Time delay perforating apparatus for wells.
Title (en)
Time delay perforating apparatus for wells.
Title (de)
Lochapparat mit Verzögerungsvorrichtung für Bohrloch.
Title (fr)
Dispositif de perforation avec temporisation pour puits.
Publication
Application
Priority
US 40402989 A 19890906
Abstract (en)
[origin: EP0416915A2] Apparatus for perforating a well comprises at least one first gun (20) and second gun (22) with a time delay device (50) positioned therebetween in a housing (24) connecting first and second guns. The time delay device delays firing of the second gun (22) for a predetermined period after firing of the first gun (20)and also preferably prevents fluid communication between the first and second guns by closing off a central opening (26) through the housing.
IPC 1-7
IPC 8 full level
E21B 43/117 (2006.01); E21B 43/1185 (2006.01)
CPC (source: EP)
E21B 43/1185 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0416915 A2 19910313; EP 0416915 A3 19920708; EP 0416915 B1 19950125; CA 2024677 A1 19910307; DE 69016318 D1 19950309; DE 69016318 T2 19950518; JP H03119290 A 19910521
DOCDB simple family (application)
EP 90309750 A 19900906; CA 2024677 A 19900905; DE 69016318 T 19900906; JP 23464390 A 19900906