Successful Sidetracking of a Well Onshore Germany by Integration of 3D VSP Technology - A Case Study

After drilling a low-performing well onshore North Germany the borehole was used to conduct a 3D VSP. Main purpose was to improve the seismic image of the zone in the vicinity of the well in order to determine a new landing point for the envisaged sidetrack. This turned out to be the right choice despite difficulties arising from surface restrictions during acquisition and the complex geological setting. A thorough pre-survey planning is essential in order to achieve the set goals. The quality of the seismic image of the zone in the vicinity of the well was highly increased. This allowed a reliable prediction of a less-faulted acreage and suitable facies conditions. Furthermore, enhanced structural mapping workflows helped to provide improved interpretation results in order to minimize the risk of failure.