EP 1166037 B1 20040519 - METHOD FOR TRIGGERING DETONATORS VIA A LINE OF A LARGE LENGTH
Title (en)
METHOD FOR TRIGGERING DETONATORS VIA A LINE OF A LARGE LENGTH
Title (de)
VERFAHREN ZUM AUSLÖSEN VON ZÜNDERN ÜBER EINE LEITUNG GROSSER LÄNGE
Title (fr)
PROCEDE POUR DECLENCHER DES AMORCES PAR L'INTERMEDIAIRE D'UNE LIGNE DE LONGUEUR IMPORTANTE
Publication
Application
Priority
- DE 19912641 A 19990320
- EP 0001821 W 20000302
Abstract (en)
[origin: WO0057124A1] When triggering detonators via lines of a large length, which is often the case in exploration wells in oil or natural gas fields, signal distortions occur due to the capacitive and inductive behavior of the long line (3) as well as of the consumers connected in incoming circuit to the detonators (4a, 4b, 4c). For this reason, a sure triggering of the detonators is no longer guaranteed. The invention thus provides that, before the detonators are triggered, the existing capacitors (8) are charged by applying a direct current to the line. Said capacitors (8) are charged to a level such that, at least up to the time at which the last detonator is triggered, the capacitors are not subjected to an additional charging that is induced by charge losses.
IPC 1-7
IPC 8 full level
F42D 1/05 (2006.01)
CPC (source: EP)
F42D 1/05 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0057124 A1 20000928; AT E267382 T1 20040615; AU 4103900 A 20001009; DE 19912641 A1 20000921; DE 50006500 D1 20040624; EP 1166037 A1 20020102; EP 1166037 B1 20040519
DOCDB simple family (application)
EP 0001821 W 20000302; AT 00920468 T 20000302; AU 4103900 A 20000302; DE 19912641 A 19990320; DE 50006500 T 20000302; EP 00920468 A 20000302