BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

640-acre Bakken spacing unit

T149N R93W section 26

Spacing unit9 wells allowed · order 33767Mandaree-Bakken

Unit facts

Formation
Bakken
Acres
640
Type
Spacing unit
Land described
T149N R93W section 26
Pool
Mandaree-Bakken
Zone
Zone VIII
County
Dunn County
Surveyed wells inside
2
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-edd79c817d7059cf0906
Wells allowed by the latest linked order
9
Wells assigned to this unit
1
Pending permits inside
0
Balance under the allowance
+7
First linked order
Jan 8, 2010
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.35 two-mile laterals per 1,280 acres
Density drilled so far
1.81 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. 8 more would fit the density but not the spacing rule. 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

OTTER WOMAN 34-27HELHIDATSA 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
OTTER WOMAN 34-27HELDEVON ENERGY WILLISTON, L.L.C.Active (A)5,080 ft51%
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 13965Case 11798Established the spacing unit, 1 well allowedPEAK ND, LLC
  2. Order 18499Case 16233Listed the unit in a pool zone table, 4 wells allowedDAKOTA-3 E&P COMPANY, LLC
  3. Order 19062Case 16793Established the spacing unit, 4 wells allowedENERPLUS RESOURCES (USA) INC.
  4. Order 24675Case 22340Listed the unit in a pool zone table, 7 wells allowedEOG RESOURCES, INC.
  5. Order 25078Case 22743Established the spacing unit, 7 wells allowedENERPLUS RESOURCES (USA) INC.
  6. Order 25358Case 23025Pooled all interests in the unitENERPLUS RESOURCES (U.S.A.) INC.
  7. Order 28248Case 25832Established the spacing unit, 9 wells allowedENERPLUS 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

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