BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,280-acre Bakken spacing unit

T156N R100W sections 30, 31

Spacing unit8 wells allowed · order 35871East Fork-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T156N R100W sections 30, 31
Pool
East Fork-Bakken
Zone
Zone IV
County
Williams County
Surveyed wells inside
7
Most wells operated by
Devon Energy
Unit id
dsu-bfd15206b640b5f80326
Wells allowed by the latest linked order
8
Wells assigned to this unit
7
Pending permits inside
0
Balance under the allowance
+1
First linked order
Mar 29, 2010
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.5 two-mile laterals per 1,280 acres
Density drilled so far
7.29 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

MELISSA 31-30 #5TFHMELISSA 31-30 #2HMELISSA 31-30 #3TFHMELISSA 31-30 #4HMELISSA 31-30 #1-HMELISSA 31-30 #7TFHMELISSA 31-30 #6H1 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
MELISSA 31-30 #5TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)13,782 ft100%
MELISSA 31-30 #2HDEVON ENERGY WILLISTON, L.L.C.Active (A)11,305 ft100%
MELISSA 31-30 #3TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)10,840 ft100%
MELISSA 31-30 #4HDEVON ENERGY WILLISTON, L.L.C.Active (A)10,043 ft100%
MELISSA 31-30 #1-HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,577 ft100%
MELISSA 31-30 #7TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,386 ft100%
MELISSA 31-30 #6HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,269 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 14416Case 12164Established the spacing unit, 1 well allowedGOLDEN EYE RESOURCES, LLC
  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, 8 wells allowedNEWFIELD PRODUCTION CO.
  6. Order 18719Case 16453Established the spacing unit, 8 wells allowedBRIGHAM OIL & GAS, L.P.
  7. Order 18515Case 16249Pooled all interests in the unitBRIGHAM 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.