Global Patent Index - EP 0453076 A1

EP 0453076 A1 19911023 - Plasma blasting method.

Title (en)

Plasma blasting method.

Title (de)

Plasmasprengverfahren.

Title (fr)

Méthode de tirage au plasma.

Publication

EP 0453076 A1 19911023 (EN)

Application

EP 91301810 A 19910305

Priority

CA 2015102 A 19900420

Abstract (en)

A blasting method which comprises delivering electrical energy at a rate of at least 100 megawatts per microsecond until a peak power of at least 3 gigawatts is reached across the gap of two poles of a coaxial electrode assembly immersed in an electrolyte within a confined area of a substance to be blasted. A dielectric break-down of the electrolyte in the confined area is produced resulting in the formation of plasma within the confined area which creates a pressure sufficient to blast the substance in the manner of a high explosive charge.

IPC 1-7

E21B 7/15; E21C 37/18

IPC 8 full level

E21B 7/15 (2006.01); E21C 37/18 (2006.01)

CPC (source: EP)

E21B 7/15 (2013.01); E21C 37/18 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT CH DE FR GB IT LI SE

DOCDB simple family (publication)

EP 0453076 A1 19911023; EP 0453076 B1 19950607; AT E123554 T1 19950615; AU 627984 B2 19920903; AU 7020891 A 19911024; CA 2015102 A1 19911020; CA 2015102 C 19950919; DE 69110186 D1 19950713; DE 69110186 T2 19951214; FI 911900 A0 19910419; FI 911900 A 19911021

DOCDB simple family (application)

EP 91301810 A 19910305; AT 91301810 T 19910305; AU 7020891 A 19910204; CA 2015102 A 19900420; DE 69110186 T 19910305; FI 911900 A 19910419