Rotated staggering grid forward modeling in fractured medium
Wu Guochen
Qin Haixu
Abstract：The practice of oil exploration proves that the fractures are the stor-age space of oil and gas and channels of them to move,thereby the wave-field of cracked media draws more and more attention.The actual fractured reservoir is influenced by many factors and its physical properties are complex,showing strong anisotropy.There only exist high dip-angle cracks because the pressure in the overlying strata makes only a few of horizontal or low dip angle cracks ex-ist.It will be convenient for the practical application if fracture reservoir is equivalent to HTI medium by linear slip theory.This paper simulated and ana-lyzed two-component records based on the anisotropic elastic wave rotated stag-gered grid modeling.The result shows that the existence of the crack is equiva-lent to increase the reflection interface artificially.The larger the crack density is,the smaller the aspect ratio is,the greater the difference between back-ground and fracture fillings is,and the larger the change caused by reflection wave energy is.The result provides a basis for the reservoir identification and prediction when using the seismic data.
Keywords：fracture mediumrotated staggering gridfracture densityanisot-ropylinear slip theory
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：14( 1075-1088 )