BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T155N R92W sections 5, 8

Spacing unit8 wells allowed · order 35988Alger-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T155N R92W sections 5, 8
Pool
Alger-Bakken
Zone
Zone XI
County
Mountrail County
Surveyed wells inside
6
Most wells operated by
Devon Energy
Unit id
dsu-03cb87f4cfdd08ccc8a2
Wells allowed by the latest linked order
8
Wells assigned to this unit
6
Pending permits inside
0
Balance under the allowance
+2
First linked order
Feb 5, 2010
Laterals that still fit (Nov 2026 method)
3 (2.87 two-mile equivalents)
Neighbourhood target density
8.65 two-mile laterals per 1,280 acres
Density drilled so far
5.43 per 1,280 acres

Room to drill: 3 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

ROGER SORENSON 8-5 2TFHROGER SORENSON 8-5 4TFHROGER SORENSON 8-5 6TFHROGER SORENSON 8-5 5HROGER 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
ROGER SORENSON 8-5 2TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,792 ft100%
ROGER SORENSON 8-5 4TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,664 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%
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 14171Case 11973Designated the spacing unitWHITING OIL & GAS CORP.
  2. Order 14297Case 12060Established the spacing unit, 1 well allowedBRIGHAM OIL & GAS, L.P.
  3. Order 16030Case 13752Pooled all interests in the unitBRIGHAM OIL & GAS, L.P.
  4. Order 16139Case 13855Designated the spacing unitBRIGHAM OIL & GAS, L.P.
  5. Order 16284Case 14009Designated the spacing unit, 4 wells allowedBRIGHAM OIL & GAS, L.P.
  6. Order 17383Case 15135Established the spacing unit, 4 wells allowedBRIGHAM OIL & GAS, L.P.
  7. Order 17856Case 15610Designated the spacing unit, 8 wells allowedSLAWSON EXPLORATION CO., INC.
  8. Order 18076Case 15821Established the spacing unit, 8 wells allowedBRIGHAM OIL & GAS, L.P.

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

One other unit shares a surveyed well with this one; overlapping units are not additive.