Multiple cam directional controller for steerable rotary drill
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 22, 2001
Grant Date -
N/A
app pub date -
May 6, 1999
filing date -
May 6, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A directional drilling control system for a drill stem carrying a conventional drilling head includes an elongated actuator housing fixed in a borehole being drilled. The drill stem passes through the housing and is generally coaxial with it, and an actuator within the housing is selectively activated to deflect the drill stem with respect to the axis of the housing. The actuator is selectively driven to regulate the direction and amount of deflection to thereby control the direction of drilling. An electrical controller in the housing in communication with a surface controller and/or with feedback sensors in the housing controls the actuator.
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