3D RVSP Drill-Bit Survey - Preliminary Results

M-12 3D RVSP DRILL-BIT SURVEY – PRELIMINARY RESULTS Introduction 1 An onshore 3D drill-bit Reverse VSP was acquired for the purposes of the Seisbit 3D RVSP project (EC project THERMIE no. OG 278/98/IT/UK entitled "Seisbit 3DRVSP: while drilling seismic imaging and areal velocity investigation by using the drill bit signal "). The aim of the project is to obtain detailed 3D information in the well area by using the working drill-bit source and to demonstrate the reliability of the 3D seismic-while-drilling onshore method. This result needs acquiring by a large number of surface channels and a relevant number of source