Global Patent Index - EP 1166037 A1

EP 1166037 A1 20020102 - 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

EP 1166037 A1 20020102 (DE)

Application

EP 00920468 A 20000302

Priority

  • DE 19912641 A 19990320
  • EP 0001821 W 20000302

Abstract (en)

[origin: DE19912641A1] 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

F42D 1/05

IPC 8 full level

F42D 1/05 (2006.01)

CPC (source: EP)

F42D 1/05 (2013.01)

Citation (search report)

See references of WO 0057124A1

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)

DE 19912641 A1 20000921; AT 267382 T 20040615; AU 4103900 A 20001009; DE 50006500 D1 20040624; EP 1166037 A1 20020102; EP 1166037 B1 20040519; WO 0057124 A1 20000928

DOCDB simple family (application)

DE 19912641 A 19990320; AT 00920468 T 20000302; AU 4103900 A 20000302; DE 50006500 T 20000302; EP 0001821 W 20000302; EP 00920468 A 20000302