Global Patent Index - EP 0162000 A1

EP 0162000 A1 1985-11-21 - 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

EP 0162000 A1 (EN)

Application

EP 85630049 A

Priority

US 60091384 A

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 (main, further and additional classification)

E21B 19/16; E21B 19/02; E21B 3/02

IPC 8 full level (invention and additional information)

E21B 3/02 (2006.01); E21B 19/02 (2006.01); E21B 19/16 (2006.01)

CPC (invention and additional information)

E21B 19/16 (2013.01); E21B 19/02 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family

EP 0162000 A1 19851121; NO 851485 A 19851017