BBakken SubsurfaceNorth Dakota well index

Spacing unit · McLean County

1,280-acre Bakken spacing unit

T150N R90W sections 16, 21

Spacing unit11 wells allowed · order 35256Deep Water Creek Bay-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T150N R90W sections 16, 21
Pool
Deep Water Creek Bay-Bakken
Zone
Zone XXI
County
McLean County
Surveyed wells inside
2
Most wells operated by
Burlington / Marathon
Unit id
dsu-1e3105217452318acc58
Wells allowed by the latest linked order
11
Wells assigned to this unit
2
Pending permits inside
0
Balance under the allowance
+9
First linked order
Feb 15, 2011
Laterals that still fit (Nov 2026 method)
5 (4.77 two-mile equivalents)
Neighbourhood target density
6.65 two-mile laterals per 1,280 acres
Density drilled so far
1.85 per 1,280 acres

Room to drill: 5 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

BLACK HAWK USA 31-16HWALDOCK USA 21-16H1 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
BLACK HAWK USA 31-16HMARATHON OIL COMPANYActive (A)9,952 ft100%
WALDOCK USA 21-16HMARATHON OIL COMPANYAbandoned (AB)9,558 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 15862Case 13586Established the spacing unit, 1 well allowedMARATHON OIL CO.
  2. Order 15862Case 13586Designated the spacing unitMARATHON OIL CO.
  3. Order 16089Case 13805Designated the spacing unitQEP ENERGY CO.
  4. Order 16546Case 14270Designated the spacing unit, 2 wells allowedMARATHON OIL CO.
  5. Order 16547Case 14271Established the spacing unit, 2 wells allowedMARATHON OIL CO.
  6. Order 18199Case 15937Pooled all interests in the unitMARATHON OIL CO.
  7. Order 19683Case 17414Established the spacing unit, 4 wells allowedMARATHON OIL CO.
  8. Order 25441Case 23112Designated the spacing unit, 11 wells allowedQEP ENERGY CO.

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.