Bi-directional rotary steerable system actuator assembly and...

Details Bi-directional rotary steerable system actuator assembly and... Bi-directional rotary steerable system actuator assembly and...

E - Fixed Constructions

21

B

E21B 7/04 (2006.01)

Patent

CA 2532618

Methods and apparatuses to direct a drill bit of a directional drilling assembly are disclosed. The methods and apparatuses employ the use of bi-directional actuators that are capable of displacing a hybrid steering sleeve in positive and negative directions. The bi-directional actuators are capable of greater control and precision in their actuations than traditional "engaged-disengaged" unidirectional actuators, thereby allowing for more precise directional drilling operations. The bi-directional actuators are preferably driven by drilling fluids and may optionally be shielded to lessen the erosive effects thereof.

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