EP 0685630 A3 19970402 - Mounting apparatus for dual drill pipe.
Title (en)
Mounting apparatus for dual drill pipe.
Title (de)
Einbauvorrichtung für Doppel-Bohrrohre.
Title (fr)
Dispositif de montage pour tige de forage double.
Publication
Application
Priority
DE 9408942 U 19940601
Abstract (en)
[origin: EP0685630A2] The double bore tube (22) comprises an outer tube (24) and an inner rod (25) with the end of a double tube rod. A beam (26) is provided which at one end has a first centering device for centering the outer tube together with centering and clamping of the end of the inner rod extending out of the outer tube. At the other end is a second centering device (37) for centering the outer tube. This has a run-in incline (43) by which the end of the inner rod can be raised, when the inner rod is pushed into the outer tube. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 17/18 (2006.01); E21B 19/16 (2006.01); E21B 19/20 (2006.01); E21B 19/24 (2006.01)
CPC (source: EP)
E21B 17/18 (2013.01); E21B 19/16 (2013.01); E21B 19/20 (2013.01); E21B 19/24 (2013.01)
Citation (search report)
- [A] EP 0565502 A1 19931013 - NYMAN KARL ERIK [SE]
- [A] EP 0379187 A1 19900725 - BAUER SPEZIALTIEFBAU [DE]
- [A] US 4051911 A 19771004 - CHERRINGTON MARTIN D
- [A] DE 3537471 C1 19870108 - DREYFUSS WILFRIED, et al
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IE IT LI NL SE
DOCDB simple family (publication)
DE 9408942 U1 19950209; EP 0685630 A2 19951206; EP 0685630 A3 19970402
DOCDB simple family (application)
DE 9408942 U 19940601; EP 95104109 A 19950321