CONVERGENCE RATE INVERSION FULL WAVE FIELD OF THE USE OF THE FORMATION OF THE SPECTRUM

摘要

1. The computer-implemented method for accelerating the convergence of an iterative inversion of seismic data to obtain a model of one or more physical parameters of the geological environment in the area comprising the use of a local optimization of the cost function, wherein the anticipated or current updated model to reduce discrepancies between seismic data and the model-simulated data wherein the frequency range of the updated model is adjusted in the first iteration and thereafter to match known or rasch tnom frequency spectrum for the field of geological sredy.2. A method according to Claim. 1, wherein said one or more physical parameters is the impedance for longitudinal waves and wherein the frequency spectrum of the updated model at each iteration is adjusted to match known or calculated frequency spectrum by applying the spectral shaping filter in the first iteration to the seismic data, and the seismic source impulse used to form the model-simulated data, wherein the seismic source pulse before applying the spectral shaping filter are selected so To obtain a frequency spectrum W (f), which satisfies D (f) ≈fI (f) W (f), where D (f) is the average frequency spectrum of the seismic data, f represents the frequency and I (f) is the average frequency impedance spectrum for longitudinal waves in the geologic environment is approximated frequency spectrum or other resilient parameter field geological environment, and wherein the known or estimated frequency spectrum for the region of the geological environment is I (f) .3.