- 8317, 109/PDH, Red River/ Red River B; Encore Energy, Wegman 11-30, Horse Creek field (was Wegman 22-30; a Red River well drilled March, 1981). The well is less than 2 miles from the South Dakota state line, and less than 15 miles from the extreme southwest corner of North Dakota; Bowman County; the Red River well is IA; had a cumulative of 274K; now re-entering Red River B (I don't know what "PDH" means).