Methods and apparatus for using a quill to steer a hydraulic motor when elongating a wellbore in a direction having a horizontal component, wherein the quill and the hydraulic motor are coupled to opposing ends of a drill string, by monitoring an actual toolface orientation of a tool driven by the hydraulic motor via monitoring a drilling operation parameter indicative of a difference between the actual toolface orientation and a desired toolface orientation, and then adjusting a position of the quill by an amount that is dependent upon the monitored drilling operation parameter.
申请公布号
WO2009039453(A3)
申请公布日期
2009.05.07
申请号
WO2008US77131
申请日期
2008.09.19
申请人
NABORS GLOBAL HOLDINGS, LTD.;BOONE, SCOTT;ELLIS, BRIAN;KUTTEL, BEAT;SCARBOROUGH, JOHN
发明人
BOONE, SCOTT;ELLIS, BRIAN;KUTTEL, BEAT;SCARBOROUGH, JOHN