Drilling blind in complex geology?

Consider the following assignment. You are to develop a field with several potentially productive sands, where chances are great that each well will be somewhat, or totally, different from adjacent wells. Then drill where there is inconclusive evidence as to the exact placement, presence and/or producibility of targeted sands. Finally, drill through potentially productive sections without going deeper than the last zone of interest, and without allowing a surprise encounter with blow-out range gas or other expensive, rig-time-consuming problems. The above task is difficult and frustrating if drilling blind through most of the well. Due to the difficulty of correlation, these wells, although within a field, drill like rank wildcats. In such prospects, real-time mud logging to develop correlation is a priority among the evaluation services available.