地震勘探中二维、三维随机介质模拟及属性优化.

In the environment of the increasing difficulty of seismic exploration, the conventional uniform layered medium can no longer meet the development requirements of high precision and high fidelity seismic exploration, and the study of random medium theory has been put on the agenda. At present, the same layer seismic properties are considered to be consistent in the process of 2D or 3D seismic exploration and modeling, and they are mostly based on the research of uniform layered media. This idea ignores the random perturbation brought by the small-scale parameter to the results, and such models often cannot accurately describe the actual strata. So the hybrid 2D and 3D random medium model was constructed and a detailed modeling process was given, the hybrid autocorrelation function of the parameters of the model was analyzed. Numerical simulation results showed, comparing the 2D and 3D random medium seismic attribute model, could be very clear and intuitively see the random disturbance in the stratum, effectively simulated the random medium distribution in the actual underground structure details. At the same time, 2D and 3D cone functions were introduced to model the error suppression in the discrete process. Finally, the method of 3D random medium modeling with direction factor was proposed. Compared with the traditional method, it is more conducive to compare the distribution characteristics of cracks in the actual geological structure. The theory also has good results in the actual forward simulation. [ABSTRACT FROM AUTHOR]