EP 3904632 B1 20230419 - METHOD AND DEVICE FOR LIFTING A DRILL STRING
Title (en)
METHOD AND DEVICE FOR LIFTING A DRILL STRING
Title (de)
VERFAHREN UND VORRICHTUNG ZUM HEBEN EINES BOHRGESTÄNGES
Title (fr)
PROCÉDÉ ET DISPOSITIF DE LEVAGE D'UNE TIGE DE FORAGE
Publication
Application
Priority
DE 102020111833 A 20200430
IPC 8 full level
E21B 19/084 (2006.01); B66C 13/50 (2006.01); B66D 5/00 (2006.01); E21B 7/02 (2006.01); E21B 19/02 (2006.01); E21B 41/00 (2006.01)
CPC (source: EP)
E21B 7/022 (2013.01); E21B 19/02 (2013.01); E21B 19/084 (2013.01); E21B 41/0021 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3904632 A1 20211103; EP 3904632 B1 20230419; DE 102020111833 A1 20211104
DOCDB simple family (application)
EP 21171156 A 20210429; DE 102020111833 A 20200430