EP 1867831 B1 20130724 - Methods and apparatus for wireline drilling on coiled tubing
Title (en)
Methods and apparatus for wireline drilling on coiled tubing
Title (de)
Verfahren und Vorrichtung zum Drahtseilbohren mittels eines gewickelten Rohrstranges
Title (fr)
Procédé et dispositif pour le forage au cable parmi tubage enroulé
Publication
Application
Priority
EP 06291008 A 20060615
Abstract (en)
[origin: EP1867831A1] Apparatus for drilling an underground borehole, comprising: - a tubular conveyance system (18) including an electric cable and a supply of drilling fluid, the supply of drilling fluid being arranged in use to pump fluid from the surface down the inside of the tubular conveyance (18) so as to return to the surface via the annulus between the outside of the tubular conveyance (18) and the borehole; - a drilling system (20) comprising an electrically powered pump (28) and a drilling motor (22), the pump (28) being arranged in use to pump fluid from the borehole outside the drilling system (20) up through the inside of the drilling system (20); - a connector (30) connecting the drilling system (20) to the tubular conveyance system (18), through which the pump (28) and motor (22) are connected to the electric cable, and - a flow diverter at which flow down the inside of the tubular conveyance system (18) is diverted into the annulus, and flow up the inside of the drilling system (20) is diverted into the annulus.
IPC 8 full level
E21B 4/04 (2006.01); E21B 4/18 (2006.01); E21B 17/20 (2006.01); E21B 21/10 (2006.01)
CPC (source: EP GB US)
E21B 4/04 (2013.01 - EP GB US); E21B 4/18 (2013.01 - EP GB US); E21B 17/20 (2013.01 - EP GB US); E21B 21/103 (2013.01 - EP GB US)
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)
EP 1867831 A1 20071219; EP 1867831 B1 20130724; CA 2655245 A1 20071221; GB 0823035 D0 20090128; GB 2454373 A 20090506; MX 2008016052 A 20090206; RU 2009101029 A 20100720; RU 2436929 C2 20111220; US 2009321141 A1 20091231; WO 2007144157 A1 20071221
DOCDB simple family (application)
EP 06291008 A 20060615; CA 2655245 A 20070612; EP 2007005206 W 20070612; GB 0823035 A 20070612; MX 2008016052 A 20070612; RU 2009101029 A 20070612; US 30494607 A 20070612