Rotary drill bit having moveable formation-engaging members

Details Rotary drill bit having moveable formation-engaging members Rotary drill bit having moveable formation-engaging members

1998-04-24

2000-11-07

Dang, Hoang

Boring or penetrating the earth

Bit or bit element

Cutting edges relatively longitudinally movable during...

175382, 175426, E21B 1062

Patent

active

061422509

ABSTRACT:
Formation engaging elements are moveably mounted onto a drill bit. Such elements may be used to protect other rigidly mounted formation engaging elements from impacts that occur during use of the drill bit, or they may be used to alter the aggressiveness of the drill bit when used in directional drilling operations.

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