Technique yields exact solution for planning bit-walk paths

02/04/2002
Bit walk is the natural tendency of the drill bit to drift in a lateral direction during drilling and occurs in every operation. Operators planning and designing wellbore trajectories, therefore, must consider planning 3D paths, especially in areas where the amount of bit walk is considerable.Effective 3D-well paths reduce azimuth correction frequencies and the workload of trajectory control, reduce wellbore tortuosity, reduce the number of drillstring trips, improve penetration rates, and ultimately reduce drilling costs.Drilling experience has shown that operators can use bit walk effectively to control well trajectories, if drilling experience allows accurate estimation of the bit-walk...
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