BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

2,560-acre Bakken spacing unit

T155N R92W sections 4, 5, 8, 9

Spacing unitAlger-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T155N R92W sections 4, 5, 8, 9
Pool
Alger-Bakken
Zone
Zone XXII
County
Mountrail County
Surveyed wells inside
12
Most wells operated by
DEVON ENERGY WILLISTON, L.L.C.
Unit id
dsu-3c13413378310c85f366
Laterals that still fit (Nov 2026 method)
1 (0.96 two-mile equivalents)
Neighbourhood target density
8.65 two-mile laterals per 1,280 acres
Density drilled so far
5.45 per 1,280 acres

Room to drill: 1 lateral still fit at the density this unit's neighbourhood has reached (the larger of the 75th percentile of mature units within 10 miles and the median of units drilled in the last three years), placed in the widest gaps with the setbacks of the November 2026 method. Machine-made and geometric: not a commitment to drill, not a permit, order, lease or plan, and no economics. Land is counted once, so a unit under a larger unit shows only what the larger one left. How it is computed.

Map

HOLM 9-4 3TFHROGER SORENSON 8-5 2TFHHOLM 9-4 #5TFHHOLM 9-4 4HROGER SORENSON 8-5 4TFHHOLM 9-4 6HROGER SORENSON 8-5 6TFHROGER SORENSON 8-5 5HHOLM 9-4 1-HHOLM 9-4 #2TFHROGER SORENSON 8-5 3HROGER SORENSON 8-5 1H1 mi

DMR footprint (NAD83) with the published surface locations of its wells. Laterals run under the unit; pads often sit on a neighbouring section.

Open in the regional 3D viewerFootprint, wells and production playbackSee on the cases and orders mapHistorical spacing units by order

Wells inside the unit

WellOperatorStatusLateral inside
HOLM 9-4 3TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,834 ft100%
ROGER SORENSON 8-5 2TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,792 ft100%
HOLM 9-4 #5TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,773 ft100%
HOLM 9-4 4HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,737 ft100%
ROGER SORENSON 8-5 4TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,664 ft100%
HOLM 9-4 6HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,657 ft100%
ROGER SORENSON 8-5 6TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,628 ft100%
ROGER SORENSON 8-5 5HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,530 ft100%
HOLM 9-4 1-HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,462 ft100%
HOLM 9-4 #2TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,402 ft100%
ROGER SORENSON 8-5 3HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,368 ft100%
ROGER SORENSON 8-5 1HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,361 ft100%

Surveyed Bakken-system laterals with at least 660 ft of plan-view length inside the published footprint. Geometric membership, not a legal assignment; a lateral can cross several units.

Order history

  1. Order 23546Case 21242Designated the spacing unitOASIS PETROLEUM NORTH AMERICA LLC
  2. Order 24682Case 22347Established the spacing unitSTATOIL OIL AND GAS LP
  3. Order 25047Case 22712Pooled all interests in the unitSTATOIL OIL & GAS LP
  4. Order 35988Case 33038Designated the spacing unitSOGC, LLC

Facts extracted from signed NDIC orders whose land description covers this footprint; machine-extracted and not human-reviewed. A stated allowance is what that order allowed, not proof that it governs today.

Overlapping units

2 other units share a surveyed well with this one; overlapping units are not additive.