The Eagle Ford includes various zones differentiated by liquids yield. Currently development is focused on the northern portion of the basin, which has both oil and condensate zones. Most wells classified as oil in Eagle Ford produce oil, condensate, and associated gas. The figure provides a new oil well IP map of the Eagle Ford basin (crude oil only).
The northeastern portion, including Lee and Burleson counties, lies in the maturity window of Eagle Ford, but the formation is thinner and clay content is higher than in the western portion of Eagle Ford. Therefore, well productivity in this area is much lower than in the western portion of Eagle Ford.