EP 2186994 B1 20130320 - Drilling device and drilling method
Title (en)
Drilling device and drilling method
Title (de)
Bohrvorrichtung und Bohrverfahren
Title (fr)
Dispositif de forage et procédé de forage
Publication
Application
Priority
DE 102008042846 A 20081015
Abstract (en)
[origin: US2010089644A1] A drilling tool includes a hydraulically driven device (21) for advancing a drilling head (2) in a bore (5), and a flow limiter (30) arranged in a hydraulic conduit (25) of the advancing device (21) for adjusting an advancing speed of the drilling head (2) in the bore (5), with the flow limiter (30) having a pressure-actuated adjusting member (38) for adjusting flow of a hydraulic fluid in the hydraulic conduit means (25) in accordance with a flow volume of a rinsing fluid (7) for rinsing the bore.
IPC 8 full level
E21B 44/06 (2006.01); E21B 21/08 (2006.01); E21B 44/02 (2006.01)
CPC (source: EP US)
E21B 21/08 (2013.01 - EP US); E21B 44/02 (2013.01 - EP US); E21B 44/06 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
US 2010089644 A1 20100415; US 8146681 B2 20120403; AU 2009222529 A1 20100429; AU 2009222529 B2 20120412; DE 102008042846 A1 20100602; EP 2186994 A2 20100519; EP 2186994 A3 20111012; EP 2186994 B1 20130320; ZA 200907181 B 20100728
DOCDB simple family (application)
US 58791409 A 20091014; AU 2009222529 A 20091002; DE 102008042846 A 20081015; EP 09171656 A 20090929; ZA 200907181 A 20091014