Downhole sub with kick pad for directional drilling

Details Downhole sub with kick pad for directional drilling Downhole sub with kick pad for directional drilling

1998-04-09

2000-06-13

Tsay, Frank

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

Sectional guide or shaft having means to lock sections in...

175 76, E21B 704

Patent

active

060737077

ABSTRACT:
A downhole drill system comprising a drill string, a drill bit terminating the drill string, a bent sub in the drill string above the drill bit, a motor housing in the drill string above the drill bit and a downhole sub connected within the drill string to the motor housing. The downhole sub comprises an adaptor housing in the drill string above the motor housing, a mandrel connected to the adaptor housing, the mandrel having a shoulder facing the adaptor housing, the mandrel shoulder and the adaptor housing together forming an annular recess, a kick pad mounted for rotation in the annular recess and movable around the annular recess when the mandrel is disengaged from the adaptor housing and a lock mechanism for locking the kick pad in a fixed position relative to the adaptor housing when the mandrel is engaged with the adaptor housing.

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