Title:
POINT THE BIT ROTARY STEERABLE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/046028
Kind Code:
A3
Abstract:
A method, device, and system is described herein for pointing a rotary drill bit (232). A rotary bit pointing device (310) is positioned between a proximal end (450) of a control shaft (402) and a universal joint (330). As the bottom hole assembly rotates, various portions of the rotary bit pointing device are enabled and subsequently disabled to apply a substantially constant force in a substantially constant direction to the control shaft. Such a force causes the distal end (460) of the control shaft to point the rotary drill bit in a target direction.
Inventors:
HUTTON RICHARD (GB)
RUTLAND JEFF (GB)
RUTLAND JEFF (GB)
Application Number:
PCT/IB2012/002313
Publication Date:
May 08, 2014
Filing Date:
September 27, 2012
Export Citation:
Assignee:
HUTTON RICHARD (GB)
RUTLAND JEFF (GB)
RUTLAND JEFF (GB)
International Classes:
E21B7/06
Domestic Patent References:
| WO2007134748A1 | 2007-11-29 | |||
| WO1996030616A1 | 1996-10-03 |
Foreign References:
| US3743034A | 1973-07-03 | |||
| US20020179336A1 | 2002-12-05 | |||
| EP1258593A2 | 2002-11-20 |
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