BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

2,560-acre Bakken spacing unit

T149N R93W sections 26, 27, 34, 35

Spacing unitMandaree-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T149N R93W sections 26, 27, 34, 35
Pool
Mandaree-Bakken
Zone
Zone XXI
County
Dunn County
Surveyed wells inside
19
Most wells operated by
DEVON ENERGY WILLISTON, L.L.C.
Unit id
dsu-7328ffdba715b6a60d00
Laterals that still fit (Nov 2026 method)
5 (4.73 two-mile equivalents)
Neighbourhood target density
9.35 two-mile laterals per 1,280 acres
Density drilled so far
6.67 per 1,280 acres

Room to drill: 5 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

WOLF CHIEF 27-34HZWOLF CHIEF 27-34HDWOLF CHIEF 27-34HWWOLF CHIEF 27-34HBWOLF CHIEF 27-34HCOTTER WOMAN 34-27HGOTTER WOMAN 34-27HELOTTER WOMAN 34-27HPWICKER 34-27HBEAKS 36-35HABEAKS 36-35HBEAKS 36-35HZBEAKS 36-35HCBEAKS 36-35HXBEAKS 36-35HWBEAKS 36-35HDOTTER WOMAN 35-36HUOTTER WOMAN 35-36HGHIDATSA HILLS 26-21H1 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
WOLF CHIEF 27-34HZDEVON ENERGY WILLISTON, L.L.C.Active (A)10,213 ft100%
WOLF CHIEF 27-34HDDEVON ENERGY WILLISTON, L.L.C.Active (A)10,102 ft100%
WOLF CHIEF 27-34HWDEVON ENERGY WILLISTON, L.L.C.Active (A)10,101 ft100%
WOLF CHIEF 27-34HBDEVON ENERGY WILLISTON, L.L.C.Active (A)10,088 ft100%
WOLF CHIEF 27-34HCDEVON ENERGY WILLISTON, L.L.C.Active (A)10,075 ft100%
OTTER WOMAN 34-27HGDEVON ENERGY WILLISTON, L.L.C.Active (A)10,033 ft100%
OTTER WOMAN 34-27HELDEVON ENERGY WILLISTON, L.L.C.Active (A)10,001 ft100%
OTTER WOMAN 34-27HPDEVON ENERGY WILLISTON, L.L.C.Active (A)9,956 ft100%
WICKER 34-27HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,356 ft100%
BEAKS 36-35HADEVON ENERGY WILLISTON, L.L.C.Active (A)6,235 ft54%
BEAKS 36-35HDEVON ENERGY WILLISTON, L.L.C.Active (A)5,054 ft55%
BEAKS 36-35HZDEVON ENERGY WILLISTON, L.L.C.Active (A)4,943 ft48%
BEAKS 36-35HCDEVON ENERGY WILLISTON, L.L.C.Active (A)4,941 ft48%
BEAKS 36-35HWDEVON ENERGY WILLISTON, L.L.C.Active (A)4,937 ft49%
BEAKS 36-35HXDEVON ENERGY WILLISTON, L.L.C.Active (A)4,937 ft49%
BEAKS 36-35HDDEVON ENERGY WILLISTON, L.L.C.Active (A)4,825 ft48%
OTTER WOMAN 35-36HUDEVON ENERGY WILLISTON, L.L.C.Active (A)4,730 ft48%
OTTER WOMAN 35-36HGDEVON ENERGY WILLISTON, L.L.C.Active (A)4,712 ft43%
HIDATSA HILLS 26-21HENERPLUS RESOURCES USA CORPORATIONActive (A)4,497 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 28511Case 26098Established the spacing unitWPX ENERGY WILLISTON, LLC
  2. Order 28658Case 26242Pooled all interests in the unitWPX ENERGY WILLISTON, LLC
  3. Order 28745Case 26222Designated the spacing unitPETROSHALE (US), INC.
  4. Order 33767Case 31078Designated the spacing unitENERPLUS RESOURCES (USA) CORP.

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.