Structure map of the Wolfcamp formation

DelawareBasin

CentralBasin

Platform

MidlandBasin

Val VerdeBasin

OzonaArch

Source: U.S. Energy Information Administration based on DrillingInfo Inc., Bureau of Economic Geology, U.S. Geological Survey.

Texas

New Mexico

Oklahoma

Capitan Reef Trend

WolfcampShelf

Margin

Sub-basins

Northwest Shelf

EasternShelf

Diablo Platform