BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T157N R91W sections 4, 9

Spacing unit8 wells allowed · order 35088Kittleson Slough-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T157N R91W sections 4, 9
Pool
Kittleson Slough-Bakken
Zone
Zone IX
County
Mountrail County
Surveyed wells inside
3
Most wells operated by
Phoenix
Unit id
dsu-ec31754bab5f9700180d
Wells allowed by the latest linked order
8
Wells assigned to this unit
3
Pending permits inside
0
Balance under the allowance
+5
First linked order
Oct 28, 2008
Laterals that still fit (Nov 2026 method)
1 (0.96 two-mile equivalents)
Neighbourhood target density
3.91 two-mile laterals per 1,280 acres
Density drilled so far
3.09 per 1,280 acres

Room to drill: 1 lateral 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

Pladson 4-9 #2HPladson 4-9 #3HPLADSON 4-9 #1TFH1 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
Pladson 4-9 #2HPhoenix Operating LLCActive (A)11,218 ft100%
Pladson 4-9 #3HPhoenix Operating LLCActive (A)11,188 ft100%
PLADSON 4-9 #1TFHPhoenix Operating LLCActive (A)10,286 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 12444Case 10438Designated the spacing unit
  2. Order 16922Case 14644Pooled all interests in the unitBRIGHAM OIL & GAS, L.P.
  3. Order 17305Case 15054Designated the spacing unitSLAWSON EXPLORATION CO., INC.
  4. Order 18118Case 15863Designated the spacing unit, 8 wells allowedSLAWSON EXPLORATION CO., INC.
  5. Order 18720Case 16454Established the spacing unit, 8 wells allowedBRIGHAM OIL & GAS, LP
  6. Order 34785Case 32032Pooled all interests in the unitPHOENIX OPERATING LLC

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.