EP 1570150 A1 20050907 - ONE-STEP DIRECTIONAL CORING OR DRILLING SYSTEM
Title (en)
ONE-STEP DIRECTIONAL CORING OR DRILLING SYSTEM
Title (de)
EIN-MARSCH ABGELENKTES KERNBOHR- ODER BOHRSYSTEM
Title (fr)
SYSTEME DE CAROTTAGE OU FORAGE DEVIE A UNE PASSE
Publication
Application
Priority
- BE 0300161 W 20030925
- BE 200200563 A 20020926
Abstract (en)
[origin: US7320373B2] An assembly for sidetracked drilling in a wall of a borehole previously drilled or cored in a formation includes a guide element and an expansible device fixed to the front end of the guide element operable to be selectively expanded by an actuation means. A sidetracking channel is formed in the guide element in alignment with an internal space, upstream of the expansible device in the direction of advance. A longitudinal cavity is formed in the guide element parallel to the longitudinal axis and arranged to allow passage from the internal space to the actuation means of the expansible device. Within the internal space of the guide element, an external tube of the core barrel includes a core bit fixed to the front end of the external tube and arranged to slide, after having been released, in the internal space and in the sidetracking channel and then progress to the formation.
IPC 1-7
IPC 8 full level
E21B 7/06 (2006.01); E21B 7/08 (2006.01); E21B 10/64 (2006.01); E21B 23/06 (2006.01); E21B 25/02 (2006.01); E21B 25/16 (2006.01)
CPC (source: EP US)
E21B 7/061 (2013.01 - EP US); E21B 10/64 (2013.01 - EP US); E21B 23/06 (2013.01 - EP US); E21B 25/02 (2013.01 - EP US); E21B 25/16 (2013.01 - EP US)
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 RO SE SI SK TR
DOCDB simple family (publication)
WO 2004029401 A1 20040408; AT E346218 T1 20061215; BE 1015123 A3 20041005; CA 2499725 A1 20040408; CA 2499725 C 20100511; DE 60309925 D1 20070104; EP 1570150 A1 20050907; EP 1570150 B1 20061122; NO 20051890 L 20050419; US 2005167158 A1 20050804; US 2007017707 A1 20070125; US 7117958 B2 20061010; US 7320373 B2 20080122
DOCDB simple family (application)
BE 0300161 W 20030925; AT 03747752 T 20030925; BE 200200563 A 20020926; CA 2499725 A 20030925; DE 60309925 T 20030925; EP 03747752 A 20030925; NO 20051890 A 20050419; US 47012306 A 20060905; US 8991205 A 20050325