Well-to-seismic integration initial wave impedance modeling method

The invention belongs to the technical field of seismic oil-gas exploration, and discloses a well-to-seismic integration initial wave impedance modeling method which comprises the steps as follows: a seismic data volume, a well logging curve and horizon data are read from a file, channel exaction operation is performed on the seismic data volume, and a pseudo well set is established, resampling and threshold processing are performed on the channels of the extracted pseudo well set one by one, matching of amplitude points between a reflection interface and seismic channels is performed on a reflection coefficient sequence, after matched pseudo wells are obtained, each pseudo well is extrapolated through weighting to perform modeling of each channel, smooth finishing is performed on the models, and the obtained models are arrayed and displayed and delivered to a subsequent inversion process to perform inversion treatment. According to the invention, initial models with different fine degrees are obtained through adjustment of extracted channel parameters, so that an effective and convenient interface is provided for geological inversion personnel to adjust the resolution ratio on the whole profile, and a subjective choice between the inversion effect and the inversion speed is made at the same time.