EP 0995010 B1 20040317 - CORE BARREL
Title (en)
CORE BARREL
Title (de)
KERNBOHRWERKZEUG
Title (fr)
CAROTTIER
Publication
Application
Priority
- BE 9800104 W 19980708
- BE 9700590 A 19970708
Abstract (en)
[origin: WO9902816A1] The invention concerns a core barrel, in particular in the field of oil exploration, comprising at least an outer tube (2) and a core bit (3) forming an outer assembly (4) and at least an inner tube (5) forming with a drilling core optionally present therein, and optionally with part of the groups arranged under the drilling core base, an inner assembly (7), suspension and/or guiding means being provided for maintaining the inner assembly (7) inside the outer assembly (4), the suspension and/or guiding means being further arranged such that the inner assembly (7) maintains at least perpendicular to these means (9), with respect to the outer assembly (4), a predetermined axial and/or radial and/or angular freedom of movement greater than usual.
IPC 1-7
IPC 8 full level
E21B 10/48 (2006.01); E21B 25/00 (2006.01); E21B 25/02 (2006.01)
CPC (source: EP US)
E21B 10/48 (2013.01 - EP US); E21B 25/00 (2013.01 - EP US); E21B 25/02 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
WO 9902816 A1 19990121; BE 1011266 A3 19990706; CA 2295655 A1 19990121; CA 2295655 C 20070626; DE 69822466 D1 20040422; DE 69822466 T2 20050324; EP 0995010 A1 20000426; EP 0995010 B1 20040317; NO 20000057 D0 20000106; NO 20000057 L 20000211; NO 316529 B1 20040202; US 6341656 B1 20020129
DOCDB simple family (application)
BE 9800104 W 19980708; BE 9700590 A 19970708; CA 2295655 A 19980708; DE 69822466 T 19980708; EP 98933379 A 19980708; NO 20000057 A 20000106; US 46218600 A 20000320