EP 1345003 A3 20040512 - Shaped charge liner with precursor liner
Title (en)
Shaped charge liner with precursor liner
Title (de)
Hohlladungseinlage mit Vorlaufeinlage
Title (fr)
Revêtement de charge creuse avec revêtement précurseur
Publication
Application
Priority
US 9660902 A 20020312
Abstract (en)
[origin: EP1345003A2] A method to remove well bore fluid from the path of a shaped-charge jet in order to reduce the effect it has on the jet tip. A precursor liner (70) and a primary liner (50) are both pressed in the same housing (12). The primary liner (70) is similar or equivalent to a standard big hole shaped charge liner. The precursor liner (70) is pressed into the apex end (54) of the primary liner (50) and upon detonation is intended to form an initial very fast moving precursor jet to open a path through the fluid of the well bore annulus for the following primary jet. <IMAGE>
IPC 1-7
IPC 8 full level
F42B 1/028 (2006.01)
CPC (source: EP US)
F42B 1/028 (2013.01 - EP US)
Citation (search report)
- [X] EP 0252385 A1 19880113 - DIEHL GMBH & CO [DE]
- [X] US 6305289 B1 20011023 - MAYSELESS MEIR [IL], et al
- [X] US 5175391 A 19921229 - WALTERS WILLIAM P [US], et al
- [A] FR 1327804 A 19630524 - SOC TECH DE RECH IND
- [A] US 3924510 A 19751209 - STRUNK MANFRED, et al
- [A] US 5251530 A 19931012 - KAESER RUDOLF [CH]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
EP 1345003 A2 20030917; EP 1345003 A3 20040512; CA 2421671 A1 20030912; US 2003183113 A1 20031002
DOCDB simple family (application)
EP 03251375 A 20030306; CA 2421671 A 20030311; US 9660902 A 20020312