Table 1. Well IDs, the Bakken Formation, and the Upper and Lower Member Thickness.

	the Bakken Formation	the upper shale	the lower shale
well IDa	thickness (ft)	thickness (ft)	thickness (ft)
1	95	10	33
3	28	6	7
5	110	21	23
6	101	9	24
7	94	10	24
8	85	12	40
9	150	18	51
11	82	24	36
12	69	14	9
14	21	10	0

^aWell ID is not equivalent to well numbers.