EP 1600602 B1 20061227 - Hydraulic drilling apparatus and method
Title (en)
Hydraulic drilling apparatus and method
Title (de)
Vorrichtung und Verfahren zum hydraulischen Bohren
Title (fr)
Dispositif et procédé pour le forage hydraulique
Publication
Application
Priority
DE 102004026234 A 20040528
Abstract (en)
[origin: EP1600602A2] A tube (2) with a boring crown (3) at its lower end is rotated and lowered vertically to make a narrow vertical bore (31). A cutting arrangement (46) near the bottom of the tube has a fixed sideways-extending tube (6) with a fluid jet nozzle (7). This enlarges the bore radius (23) to slightly more than the radius swept out by the end of the tube. A long tube (8) with a fluid jet nozzle (10) may swing from a resting place (8a) inside the drilling tube to a deployed position where it sweeps out an enlarged radius (24). A powerful fluid jet from the nozzle cuts out the bore to an even larger radius (25), forming a cavity to accommodate the foot of a concrete pile.
IPC 8 full level
E21B 43/29 (2006.01); E21B 7/18 (2006.01)
CPC (source: EP)
E21B 7/18 (2013.01); E21B 43/292 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1600602 A2 20051130; EP 1600602 A3 20060301; EP 1600602 B1 20061227; AT E349599 T1 20070115; DE 102004026234 B3 20051006; DE 502005000254 D1 20070208
DOCDB simple family (application)
EP 05010058 A 20050509; AT 05010058 T 20050509; DE 102004026234 A 20040528; DE 502005000254 T 20050509