Mud Motor Bearing Pack Lower End With Catch Ring

摘要

It is desirable to secure a lower end of a down hole assembly in the event of a down hole failure, such as a fractured drive shaft, enabling recovery of the bottom hole assembly and drill bit. To secure the lower end of the down hole assembly, a catch apparatus according to embodiments herein may be used, the catch apparatus including a rotating bearing having a distal end threadably coupled to a distal portion of a drive shaft. The apparatus may also include a stationary bearing having a proximal end threadably coupled to a distal end of an outer housing. A catch ring may be threadably coupled to a proximal end of the rotating bearing, the catch ring having a shoulder radially overlapping a shoulder of the stationary bearing.

主权项

1. An apparatus for securing a lower end of a down hole assembly comprising:
a rotating bearing, wherein a distal end of the rotating bearing is threadably coupled to a distal portion of a drive shaft; a stationary bearing, wherein a proximal end of the stationary bearing is threadably coupled to a distal end of an outer housing; and a catch ring threadably coupled to a proximal end of the rotating bearing, wherein a shoulder of the catch ring radially overlaps a shoulder of the stationary bearing outer housing.