EP 1899577 A1 20080319 - ARRANGEMENT FOR CONTROLLING PRESSURE-FLUID-OPERATED DRILLING EQUIPMENT
Title (en)
ARRANGEMENT FOR CONTROLLING PRESSURE-FLUID-OPERATED DRILLING EQUIPMENT
Title (de)
ANORDNUNG ZUR STEUERUNG VON DRUCKFLUIDBETRIEBENEN BOHREINRICHTUNGEN
Title (fr)
AGENCEMENT DESTINÉ À COMMANDER UN ÉQUIPEMENT DE FORAGE ACTIONNÉ PAR LIQUIDE DE PRESSION
Publication
Application
Priority
- FI 2006050292 W 20060628
- FI 20055375 A 20050701
Abstract (en)
[origin: WO2007003705A1] An arrangement for controlling pressure-fluid-operated drilling equipment. In the arrangement, pressure of a feed channel (14a) of a feed motor (3) is controlled by a pressure limit (26), a pressure difference acting over the pressure limit (26) being proportional to a volume of flow of pressure fluid.
IPC 8 full level
E21B 44/02 (2006.01); E21B 44/06 (2006.01)
IPC 8 main group level
E21B (2006.01)
CPC (source: EP FI)
E21B 44/02 (2013.01 - FI); E21B 44/06 (2013.01 - EP FI)
Citation (search report)
See references of WO 2007003705A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007003705 A1 20070111; CN 101213350 A 20080702; EP 1899577 A1 20080319; FI 118053 B 20070615; FI 20055375 A0 20050701; FI 20055375 A 20070102; ZA 200711107 B 20081029
DOCDB simple family (application)
FI 2006050292 W 20060628; CN 200680024250 A 20060628; EP 06764531 A 20060628; FI 20055375 A 20050701; ZA 200711107 A 20071220