The Study Of The Matching Method Among The Well Data,Seismic Data And The MT Data

Scale matching method means adjusting information with different scale to the same level. This thesis focuses on scale unification of information with different frequency bandwidth.We can improve the electric resistivity profile's resolution by matching the well data and the MT data. Meantime, MT-seismic cooperate inversion is an important component of reservoir geophysics. The common ground of these two methods is that the low resolution is controlled by the high resolution. Well data , seismic data and the MT data have different resolutions, if we can put these data together, the ambiguity of the inversion can be restrained to some extent and the resolution of the geological body can be improved.This thesis gives a method of well constrained MT high resolution processing basing on auto gain control modulation. It uses base function method which utilizes original well-resistivity data as initial condition and processed resistivity trace beside the well as initial model to extrapolate the high frequency information of the well logs to the electric resistivity profiles. In this way we can broaden the bandwidth of the MT data.In this thesis we introduce the MT-seismic cooperate inversion. Firstly, the marquardt inversion method about the one-dimensional MT data based on the model building is introduced, then we adopt the base function method to restrict the whole electric resistivity profile. Model test shows some superiorities about this method.