EP 1163423 A1 20011219 - CORE BARREL
Title (en)
CORE BARREL
Title (de)
KERNBOHRWERKZEUG
Title (fr)
CAROTTIER
Publication
Application
Priority
- BE 0000024 W 20000315
- BE 9900180 A 19990315
Abstract (en)
[origin: WO0055473A1] The invention concerns a core barrel, in particular for oil exploration, comprising a string, an external tube (2) fixed at the front end of the string, a core bit mounted on a front section (3A) of the external tube, and an internal tube assembly (8) mounted in the external tube and comprising hydrodynamic means transforming a core sampling line pressure into a load thrusting said assembly towards the core barrel front, the front section of the external tube being mounted axially sliding, limited by front and rear stop elements (12A, 12P), in a rear section (3P) of the same external tube to project therefrom longitudinally, the assembly comprising a support stop (14) arranged to thrust selectively forward the front section of the external tube, means being arranged between the inner tube (9) proper and said front section such that the latter can be driven in rotation about its longitudinal axis independently of said internal tube, a motor (7) capable of driving the core bit in rotation relative to the string.
IPC 1-7
IPC 8 full level
E21B 4/02 (2006.01); E21B 23/08 (2006.01); E21B 25/02 (2006.01)
CPC (source: EP US)
E21B 4/02 (2013.01 - EP US); E21B 23/08 (2013.01 - EP US); E21B 25/02 (2013.01 - EP US)
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)
WO 0055473 A1 20000921; AT E266143 T1 20040515; BE 1012557 A3 20001205; CA 2366118 A1 20000921; CA 2366118 C 20080715; DE 60010449 D1 20040609; EP 1163423 A1 20011219; EP 1163423 B1 20040506; ES 2220423 T3 20041216; NO 20014446 D0 20010913; NO 20014446 L 20010913; NO 323187 B1 20070115; US 6644424 B1 20031111
DOCDB simple family (application)
BE 0000024 W 20000315; AT 00910440 T 20000315; BE 9900180 A 19990315; CA 2366118 A 20000315; DE 60010449 T 20000315; EP 00910440 A 20000315; ES 00910440 T 20000315; NO 20014446 A 20010913; US 93665401 A 20010914