WELL AND MOUNT BACKGROUND STABILIZER UNDERSTANDING THE SAME

摘要

downhole stabilizer and assembly comprising the present invention relates to a downhole stabilizer (5), such as a drill motor stabilizer, comprising at least one flare device and / or reinforcement device (10). The present invention also relates to an assembly (30), such as a downhole drilling assembly (31), comprising at least one of said stabilizer (5) and / or a drill bit (40, 41) comprising a gauge tip (42) at or near a drill end (45) thereon, and a connector (46) for connecting the drill bit (40, 41) to a drill motor assembly (60) wherein the bore of the drill bit (42) comprises a substantially cylindrical portion having a length less than or equal to approximately once the nominal diameter of the tip. The present invention also relates to a new lockable device (80), such as a lock and key mechanism, to enable locking of a shaft (70 '), for example a motor drive shaft (71'). , through or together with a stabilizer (5 ').