EP 3877624 B1 20220420 - KELLY BAR ASSEMBLY FOR A DRILL AND METHOD FOR WORKING SOIL
Title (en)
KELLY BAR ASSEMBLY FOR A DRILL AND METHOD FOR WORKING SOIL
Title (de)
KELLYSTANGENANORDNUNG FÜR EIN BOHRGERÄT UND VERFAHREN ZUR BODENBEARBEITUNG
Title (fr)
DISPOSITIF DE TIGE D'ENTRAÎNEMENT POUR UN APPAREIL DE FORAGE ET PROCÉDÉ DE TRAITEMENT DU SOL
Publication
Application
Priority
- EP 19192058 A 20190816
- EP 2020071850 W 20200804
Abstract (en)
[origin: CA3138200A1] The invention relates to a kelly bar arrangement for a drilling device and to method for working the ground with a drilling device. A tubular external kelly bar and an internal kelly bar, which is displaceably mounted within the external kelly bar and has cable suspension, are provided, it being possible to transfer the drilling torque between the external kelly bar and the internal kelly bar. According to the invention, at least one line is arranged on the internal kelly bar, a rotary union is arranged on a lower or upper end region of the internal kelly bar, which union has a first connecting section and a second connecting section, and a rotary device for actively rotating the two connecting sections relative to one another is arranged on the rotary union.
IPC 8 full level
E21B 17/07 (2006.01); E21B 7/02 (2006.01)
CPC (source: CN EP US)
E21B 7/02 (2013.01 - CN EP US); E21B 17/07 (2013.01 - EP US); E21B 17/073 (2013.01 - CN)
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 3779117 A1 20210217; AU 2020333796 A1 20211118; AU 2020333796 A9 20220217; AU 2020333796 B2 20220915; CA 3138200 A1 20210225; CA 3138200 C 20230919; CN 114127382 A 20220301; CN 114127382 B 20240507; EP 3877624 A1 20210915; EP 3877624 B1 20220420; SG 11202111447Y A 20211129; US 11939821 B2 20240326; US 2022220814 A1 20220714; WO 2021032461 A1 20210225; WO 2021032461 A8 20220120
DOCDB simple family (application)
EP 19192058 A 20190816; AU 2020333796 A 20200804; CA 3138200 A 20200804; CN 202080037706 A 20200804; EP 2020071850 W 20200804; EP 20750664 A 20200804; SG 11202111447Y A 20200804; US 202017595466 A 20200804