A method and device for seismic point-by-point guided drilling

The invention provides a method and device for seismic point-by-point guided drilling, and the method comprises the steps: building an initial three-dimensional velocity field according to drilling and logging data, horizon data and velocity spectrum data; constructing a control point according to the actual drilling data; correcting the initial three-dimensional velocity field by using the control points, and determining an updated three-dimensional velocity field; performing time-depth conversion by using the updated three-dimensional velocity field, and converting the seismic interpretationresult of the time domain into a depth domain result; performing well-to-seismic analysis according to the depth domain result; and iteratively updating the initial three-dimensional velocity field by utilizing a well-to-seismic analysis result, and guiding the horizontal well to drill in the box body point by point. According to the method, the actual drilling data are used for constructing thecontrol points to correct