Geologic steering of the horizontal well drilling is the real-time monitoring technique for realizing the geologic steering of the horizontal well drilling based on reservoir prediction and through geologic and engineering parameters measurement, this technique is quite suitable for horizontal well track control, especially drilling in the thin oil-gas layers of the complicated fault blocks.

This paper expresses the change regulation of directional well track by establishing a mathematical model of well tracks and adopting the average angle method to program out true vertical depth, bottom coordinates and dogleg angle.

Hole trajectory of directional drilling is very important for drilling safety and efficiency, and cost cutting.

This paper mainly introduces the design and control of wellbore trajectory, borehole cleaning measures, and torque and friction drag reduction measures of this well.

Novel wellbore trajectory prediction method based on support vector machine;