Articulated directional drilling motor assembly

Assembly for directional drilling of boreholes

Assembly for making oriented bore-holes

Bendable drilling sub

Bent sub

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

Borehole angle control by gage corner removal from mechanical de

Boring apparatus

Boring apparatus

Boring apparatus

Boring apparatus

Bottom hole assembly for directional drilling

Choke device

Closed loop drilling assembly with electronics outside a...

Coiled tubing directional drilling apparatus

Collared boring bit

Connector housing

Control of at least two stabilizing arms in a drill or core devi

Control system for a drilling apparatus

Controllable downhole directional drilling tool