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Line 99: − − [[file:wellbore-trajectory_fig8.png|thumb|{{figure number|8}}Build rates for classification of horizontal wells.]]
→Drilling a directional well
* ''Drop angle''—The pendulum BHA, discussed earlier, is also used for dropping the angle (see [[:file:wellbore-trajectory_fig1.png|Figure 1]]).
* ''Drop angle''—The pendulum BHA, discussed earlier, is also used for dropping the angle (see [[:file:wellbore-trajectory_fig1.png|Figure 1]]).
* ''Build angle''—This requires a near bit stabilizer to act as a fulcrum point. The bend in the drill collars above the near bit stabilizer causes the bit axis to tilt relative to the hole axis ([[:file:wellbore-trajectory_fig7.png|Figure 7b]]).
* ''Build angle''—This requires a near bit stabilizer to act as a fulcrum point. The bend in the drill collars above the near bit stabilizer causes the bit axis to tilt relative to the hole axis ([[:file:wellbore-trajectory_fig7.png|Figure 7b]]).
==Horizontal wellbore==
==Horizontal wellbore==