The invention provides a
longitudinal wave and converted wave matching method and
system based on inversion, and belongs to the technical field of
oil exploration, and the method comprises the steps: obtaining
logging information, a
longitudinal wave superposition data body, a
longitudinal wave pre-stack gather data body and a converted wave superposition data body of a multi-component earthquake; performing well-seismic calibration on the longitudinal wave superposition data body and the converted wave superposition data body, and determining the time depth of the target stratum in longitudinal
waves and converted
waves; correcting the converted wave from the converted wave
time domain to the longitudinal wave
time domain to obtain a converted wave data body; according to the
logging information and the longitudinal wave pre-stack gather data body, carrying out pre-stack inversion to obtain
transverse wave impedance; according to the
logging information and the converted wave data body, carrying out post-stack inversion to obtain shear
wave impedance; and determining a
time difference according to the shear
wave impedance, and matching the converted wave data volume according to the
time difference. The problem that longitudinal
waves and converted waves are difficult to match due to large energy, frequency and phase differences is solved, the matching precision of the longitudinal waves and the converted waves is improved, and meanwhile accurate matching between marker
layers can be achieved.