<p>A directional drilling system for use in drilling a wellbore can include a bit deflection assembly with a bit axis deflection mechanism which applies a deflecting force to a shaft connected to a drill bit. The deflecting force may deflect the shaft, without being reacted between the deflection mechanism and the drill bit. The deflecting force may deflect the shaft between the drill bit and a radial bearing which maintains the shaft centered in the bit deflection assembly. The deflection mechanism may both angularly deflect and laterally displace the bit axis in the deflection mechanism.</p>
申请公布号
WO2013122603(A1)
申请公布日期
2013.08.22
申请号
WO2012US25633
申请日期
2012.02.17
申请人
HALLIBURTON ENERGY SERVICES, INC.;SMITH, RAYMOND, C.;KANJI, KARIM, N.