Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

In this study, we showed that more abundant information could be extracted from cross-well seismic data by correlating velocity tomogram with stacked Kirchhoff migration image. Data processing was independently performed in both the common shot and receiver domains to minimize the reflection signal loss. The extracted reflection signals were migrated to image the various interfaces between the shot and receiver wells. Final migration image was obtained by stacking the migrated sections from both the shot and receiver domains and interpreted by correlation of the drill log and velocity tomogram. As a consequence, Kirchhoff migrated image had revealed several reflection interfaces such as ground water-table(3m), strong local impedance interface(10m), two or more reflection events which seemed to be originated by different degree of weathering, and reflection interface between soft and hard rock.