EP 0162000 A1 19851121 - Top drive well drilling apparatus with removable link adapter.
Title (en)
Top drive well drilling apparatus with removable link adapter.
Title (de)
Bohrvorrichtung mit oberem Antrieb und auswechselbaren Bügelanschlüssen.
Title (fr)
Appareil de forage de puits à entraînement au sommet comportant un raccord amovible à anse.
Publication
Application
Priority
US 60091384 A 19840416
Abstract (en)
A well drilling apparatus having a drive unit for rotating a drill string (27). A stem (25) extends downward from the drive unit, and during tripping a link adapter (35) is removably connected to the stem (25). During tripping, an elevator (31) is suspended from the link adapter (35) by a pair of links (33), and the drill string (27) is held by the elevator (31).
IPC 1-7
IPC 8 full level
E21B 3/02 (2006.01); E21B 19/02 (2006.01); E21B 19/16 (2006.01)
CPC (source: EP)
E21B 19/02 (2013.01); E21B 19/16 (2013.01)
Citation (search report)
- [X] US 3915244 A 19751028 - BROWN CICERO C
- [X] US 4209066 A 19800624 - WATSON BARRY R [US]
- [X] US 3776320 A 19731204 - BROWN C
- [X] FR 2146954 A1 19730309 - HOURCADE LOUIS [FR]
- [A] US 3857450 A 19741231 - GUIER W
- [A] US 1967517 A 19340724 - ROGERS WALTER A
- [A] US 4396216 A 19830802 - HAMILTON WILLIAM R
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 85630049 A 19850404; NO 851485 A 19850415