Migration of Seismic Data for Multi-Layered Fractured Geological Media Using Elastic Approach

Seismic surey process is the most common technology for prospecting and exploration of oil and gas deposits around the world. It allows to reconstruct the structure of the subsurface are on the basis of day surface movements caused by vibrational or explosive sources, due to the reflection of volumetric seismic waves from geological heterogeneities. Two different problems of seismic survey can be distinguished: inversion and migration. Development of new approaches to the solution of the latest one is the goal of this research. This article is devoted to the problem of seismic imaging of layered fractured geological media. Authors proposed a new approach to the subsurface area image creation based on the numerical solution of the linear elasticity system. Adjoint operator approach was used, direct and adjoint problems were solved numerically by the grid-characteristic method on hexahedral meshes. Developed method allows to use arbitrary background models, even fractured. It was successfully applied to the model of the multi-layered fractured geolgical medium.