AVO分析和应用

A REVIEW OF AVO AND ITS APPLICATION

With the increasingly deepening in studying AVO(amplitude versus offset),the discussion focused on the reliability of AVO anlysis has stirred up an intense interest in geophysical community. The authors'attempt is to find out an approach by which reflection coefficients can vary with incidence when large incidence is best fitted. And proceeding from this ,a quadratic polynomial derivative of Poisson's ratio is produced. Also,the roles that acoustic terms and shearing terms in equation play in terms of AVO effect are examined so as to avoid misleading to pitfalls. Finally,an example taken from one gas pool is given,which illustrates the payoff resulted from AVO analysis integrated with specific geological settings.