Use of VSP for Improving Drilling Decisions in the Bolivian Foothills

The paper demonstrates successful application of the borehole seismic technology for subsurface imaging in the borehole vicinity and ahead of the bit to de-risk the sidetrack trajectory of the development well in the complex foothills environment. The VSP data acquired from the rig source and two fixed offset sources were rush processed and the processing results of a good quality became available for the interpretation within 24 hours from acquisition for each of three profiles. As a result of the borehole seismic data interpretation, the sidetrack has been drilled successfully reaching the Devonian fractured sandstone reservoir around predicted depth.