Figure 6. Cedar Hills-East Lookout Butte fields, Williston Basin: Ordovician Red River. a. Before 1991. b. Through 2000. Reproduced with permission of Oil & Gas Journal.
Figure 6. Cedar Hills-East Lookout Butte fields, Williston Basin: Ordovician Red River. a. Before 1991. b. Through 2000. Reproduced with permission of Oil & Gas Journal.