BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,280-acre Bakken spacing unit

T156N R100W sections 14, 23

Spacing unit8 wells allowed · order 35871East Fork-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T156N R100W sections 14, 23
Pool
East Fork-Bakken
Zone
Zone IV
County
Williams County
Surveyed wells inside
9
Most wells operated by
Devon Energy
Unit id
dsu-a1c42b1ea77544f929e2
Wells allowed by the latest linked order
8
Wells assigned to this unit
9
Pending permits inside
0
Balance under the allowance
-1
First linked order
Jun 9, 2010
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.71 two-mile laterals per 1,280 acres
Density drilled so far
8.53 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

ALLISON 23-14 #3HALLISON 23-14 #4TFHALLISON 23-14 #7HALLISON 23-14 XW #1TFHALLISON 23-14 2TFHALLISON 23-14 #5HALLISON 23-14 #6TFHALLISON 23-14 #8TFHALLISON 23-14 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
ALLISON 23-14 #3HDEVON ENERGY WILLISTON, L.L.C.Active (A)10,184 ft100%
ALLISON 23-14 #4TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,917 ft100%
ALLISON 23-14 #7HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,909 ft100%
ALLISON 23-14 XW #1TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,901 ft100%
ALLISON 23-14 2TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,895 ft100%
ALLISON 23-14 #5HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,894 ft100%
ALLISON 23-14 #6TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,891 ft100%
ALLISON 23-14 #8TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,891 ft100%
ALLISON 23-14 1HDEVON ENERGY WILLISTON, L.L.C.Abandoned (AB)9,494 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 14702Case 12446Established the spacing unit, 1 well allowedBRIGHAM OIL & GAS, L.P.
  2. Order 15377Case 13109Established the spacing unit, 1 well allowed
  3. Order 15377Case 13109Designated the spacing unit
  4. Order 16668Case 14390Designated the spacing unitNEWFIELD PRODUCTION CO.
  5. Order 18011Case 15756Designated the spacing unit, 7 wells allowedNEWFIELD PRODUCTION CO.
  6. Order 19085Case 16816Pooled all interests in the unitBRIGHAM OIL & GAS, L.P.
  7. Order 24328Case 21995Established the spacing unit, 8 wells allowed
  8. Order 23697Case 21380Designated the spacing unit, 8 wells allowedCONTINENTAL RESOURCES, INC.

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.