EP 3862528 B1 20230111 - DOWN HOLE DRILLING RIG AND METHOD FOR PRODUCING A BOREHOLE
Title (en)
DOWN HOLE DRILLING RIG AND METHOD FOR PRODUCING A BOREHOLE
Title (de)
IMLOCH-BOHRGERÄT UND VERFAHREN ZUM ERSTELLEN EINER BOHRUNG
Title (fr)
APPAREIL DE FORAGE D'UN TROU ET PROCÉDÉ DE PRODUCTION D'UN TROU
Publication
Application
Priority
EP 20155449 A 20200204
Abstract (en)
[origin: WO2021156049A1] The invention relates to a downhole drill for creating a borehole in the ground, having a drill head for removing ground material; a drill string, to the bottom end of which the drill head is attached; a rotary drive device for rotatingly driving the drill string together with the drill head; a tensioning device which is arranged on a first frame portion and is designed to radially tension the downhole drill radially relative to the borehole wall; and at least one positioning cylinder for adjusting the drill head in an axial direction. According to the invention, the at least one positioning cylinder is arranged underneath the tensioning device, which positioning cylinder is supported on the first frame portion and extends to the drill head, and the rotary drive device is arranged above the tensioning device.
IPC 8 full level
E21B 4/18 (2006.01); E02D 15/04 (2006.01); E21B 7/20 (2006.01)
CPC (source: EP)
E02D 7/28 (2013.01); E21B 4/18 (2013.01); E21B 7/208 (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 3862528 A1 20210811; EP 3862528 B1 20230111; WO 2021156049 A1 20210812
DOCDB simple family (application)
EP 20155449 A 20200204; EP 2021051043 W 20210119