Random Examples of Non-Bakken Monster Wells In The Williston Basin

There are probably more examples, but for no particular reason here are four examples of some very old wells that have targeted three formations. All three formations are now PNA in one well; one formation is still producing in two of the wells; and in one well, two formations are still producing. The oldest well was spud in 1953. There could be typos; I was pretty tired by the time I got to these wells.

Three payzone well, total production, ~ 2.63 million bbls; now PNA

• 235, 478, Hess, Lalim-Borstad 35-41, Tioga field, Madison; t1/53; cum 283K; PNA;
• 235, 429, Hess, Lalim-Borstad 35-41, Tioga field, Ordovician; t8/67; cum 956K; PNA;
• 235, 265, Hess, Lalim-Borstad 35-41, Tioga field,  Devonian; t7/84; cum 1.40 million; PNA;

Three payzone well, total production, ~ 926K bbls; one formation still producing

• 6757, 768, Encore, Clark 1, Missouri Ridge, Red River; t8/79; cum 588K; PNA;
• 6757, 262, Encore, Clark 1, Missouri Ridge, Stonewall; t8/79; cum 345K; AL; 12/12;
• 6757, 3, Encore, Clark 1, Missouri Ridge, Birdbear; t11/01; cum 329; PNA;

Three payzone well, total production, ~ 831K bbls; one formation still producing

• 7142, 318, Whiting, E. B. Green 1-1, Sioux Field, Red River; t2/80; cum 588K; PNA;
• 7142, 59, Whiting, E. B. Green 1-1, Sioux Field, Madison; t7/02; cum 176K; AL; 1,000 bbls/month 1/13;
• 7142, 167, Whiting, E. B. Green 1-1, Sioux Field, Duperow; t7/02; cum 67K; AL; 7/09;

Three payzone well, total production, ~ 1.084 million bbls; one formation still producing

• 11700, 118, SM Energy, B. A. Green 1, Sioux Field, Stonewall; t3/03; cum 84K; AL; 400 bbls/month 1/13;
• 11700, 59, SM Energy, B. A. Green 1, Sioux Field, Red River; t11/85; cum 841K; PNA
• 11700, N/D, SM Energy, B. A. Green 1, Sioux Field, Duperow; tN/D; cum 159K; AL; 1,000 bbls/month 1/13;

You can see examples of other "monster" wells here.