Updated structure and thickness maps for one of the busiest developments in the Permian Basin, the Wolfcamp within the Midland sub-basin, have been updated by the Energy Information Administration (EIA).

The Wolfcamp formation, which straddles the Midland and Delaware formations, “has attracted many oil companies because of its stacked potential,” i.e. multiple hydrocarbon-producing zones that are on top of one another, researchers noted. 

Four intervals, or benches, are within the Wolfcamp, designated from top to bottom as A, B, C and D. 

“Each bench displays different characteristics in terms of lithology (the physical characteristics of rocks), total organic carbon content and thermal maturity,” noted EIA, whose principal contributors to the Midland update were...