BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

2,560-acre Bakken spacing unit

T150N R94W sections 25, 36

Spacing unitReunion Bay-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T150N R94W sections 25, 36
Pool
Reunion Bay-Bakken
Zone
Zone XVI
County
Dunn County
Surveyed wells inside
22
Most wells operated by
DEVON ENERGY WILLISTON, L.L.C.
Unit id
dsu-29cf1ba8c144ef75e48f
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.69 two-mile laterals per 1,280 acres
Density drilled so far
10.06 per 1,280 acres

Room to drill: 0 laterals 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

MANDAREE SOUTH 30-31HELMANDAREE SOUTH 30-31HQMANDAREE 30-31HMANDAREE 30-31HAMANDAREE 30-31HWBEHR 30-31HIBEHR 30-31HUALFRED OLD DOG 30-31 HCALFRED OLD DOG 30-31 HYALFRED OLD DOG 30-31 HDALFRED OLD DOG 30-31 HZMANDAREE SOUTH 25-36HDMANDAREE SOUTH 25-36HCGRIZZLY 25-36HFGRIZZLY 25-36HYMANDAREE SOUTH 25-36HZGRIZZLY 25-36HWMANDAREE SOUTH 25-36HTGRIZZLY 25-36HXNATHAN HALE 4-25HARCTIC 150-94-36BHGRIZZLY 25-36HIL1 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
MANDAREE SOUTH 30-31HELDEVON ENERGY WILLISTON, L.L.C.Active (A)15,056 ft100%
MANDAREE SOUTH 30-31HQDEVON ENERGY WILLISTON, L.L.C.Active (A)11,950 ft100%
MANDAREE 30-31HDEVON ENERGY WILLISTON, L.L.C.Active (A)11,433 ft100%
MANDAREE 30-31HADEVON ENERGY WILLISTON, L.L.C.Active (A)11,209 ft100%
MANDAREE 30-31HWDEVON ENERGY WILLISTON, L.L.C.Active (A)10,100 ft100%
BEHR 30-31HIDEVON ENERGY WILLISTON, L.L.C.Active (A)10,096 ft100%
BEHR 30-31HUDEVON ENERGY WILLISTON, L.L.C.Active (A)9,999 ft100%
ALFRED OLD DOG 30-31 HCDEVON ENERGY WILLISTON, L.L.C.Active (A)9,972 ft100%
ALFRED OLD DOG 30-31 HYDEVON ENERGY WILLISTON, L.L.C.Active (A)9,967 ft100%
ALFRED OLD DOG 30-31 HDDEVON ENERGY WILLISTON, L.L.C.Active (A)9,964 ft100%
ALFRED OLD DOG 30-31 HZDEVON ENERGY WILLISTON, L.L.C.Active (A)9,867 ft100%
MANDAREE SOUTH 25-36HDDEVON ENERGY WILLISTON, L.L.C.Active (A)9,821 ft100%
MANDAREE SOUTH 25-36HCDEVON ENERGY WILLISTON, L.L.C.Active (A)9,817 ft100%
GRIZZLY 25-36HFDEVON ENERGY WILLISTON, L.L.C.Active (A)9,815 ft100%
GRIZZLY 25-36HYDEVON ENERGY WILLISTON, L.L.C.Active (A)9,796 ft100%
MANDAREE SOUTH 25-36HZDEVON ENERGY WILLISTON, L.L.C.Active (A)9,787 ft100%
GRIZZLY 25-36HWDEVON ENERGY WILLISTON, L.L.C.Active (A)9,784 ft100%
MANDAREE SOUTH 25-36HTDEVON ENERGY WILLISTON, L.L.C.Active (A)9,782 ft100%
GRIZZLY 25-36HXDEVON ENERGY WILLISTON, L.L.C.Active (A)9,756 ft100%
NATHAN HALE 4-25HDEVON ENERGY WILLISTON, L.L.C.Abandoned (AB)5,541 ft100%
ARCTIC 150-94-36BHENERPLUS RESOURCES USA CORPORATIONActive (A)4,524 ft100%
GRIZZLY 25-36HILDEVON ENERGY WILLISTON, L.L.C.Active (A)3,270 ft34%

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 26917Case 24551Established the spacing unitWPX ENERGY WILLISTON, LLC
  2. Order 27027Case 24663Pooled all interests in the unitWPX ENERGY WILLISTON, LLC
  3. Order 27248Case 24856Designated the spacing unitMARATHON OIL CO.
  4. Order 31536Case 28985Designated the spacing unit

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

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