Waveform similarity-based to-be-drilled stratum seismic velocity while-drilling prediction method and system

The invention discloses a to-be-drilled stratum seismic velocity while-drilling prediction method and system based on waveform similarity, and the method comprises the steps: building a relation between the amplitude and the well logging velocity according to the amplitude of a well-side seismic channel of a target well and the well logging data of a completed well drilling section of the target well; based on the relation between the amplitude and the logging speed, according to the amplitude data of the seismic channel beside the well and the logging speed data of the drilled section, a constraint speed model containing seismic speed information of the non-drilled section of the target well is established and solved through the seismic horizon interpolation technology, and therefore the seismic speed of the non-drilled section of the target well is obtained. The method can rapidly predict the logging speed in front of the drill bit, is high in stability, and improves the drilling efficiency. 本发明公开了一种基于波形相似的