BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,280-acre Bakken spacing unit

T156N R102W sections 4, 9

Spacing unit1 wells allowed · order 32131Bull Butte-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T156N R102W sections 4, 9
Pool
Bull Butte-Bakken
Zone
Zone I
County
Williams County
Surveyed wells inside
5
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-e522319069feb0a5ef67
Wells allowed by the latest linked order
1
Wells assigned to this unit
1
Pending permits inside
0
Balance under the allowance
-4
First linked order
Mar 1, 2010
Laterals that still fit (Nov 2026 method)
1 (1 two-mile equivalents)
Neighbourhood target density
5.72 two-mile laterals per 1,280 acres
Density drilled so far
4.33 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

Archerfield 5602 43-16 3BArcherfield 5602 43-16 4BArcherfield 5602 43-16 5BXMILDRED 5602 43-9HArcherfield 5602 43-16 2BX1 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
Archerfield 5602 43-16 3BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,902 ft68%
Archerfield 5602 43-16 4BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,898 ft68%
Archerfield 5602 43-16 5BXOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,889 ft67%
MILDRED 5602 43-9HOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,114 ft100%
Archerfield 5602 43-16 2BXOASIS PETROLEUM NORTH AMERICA LLCActive (A)5,238 ft32%

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 14202Case 12003Established the spacing unit, 1 well allowedOASIS PETROLEUM NORTH AMERICA LLC
  2. Order 14202Case 12003Designated the spacing unitOASIS PETROLEUM NORTH AMERICA LLC
  3. Order 18973Case 16704Pooled all interests in the unitOASIS PETROLEUM NORTH AMERICA LLC
  4. Order 20647Case 18378Established the spacing unit, 8 wells allowedBRIGHAM OIL & GAS, LP
  5. Order 32131Case 29561Established the spacing unit, 1 well allowedOASIS PETROLEUM NORTH AMERICA LLC
  6. Order 35807Case 32881Designated the spacing 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

6 other units share a surveyed well with this one; overlapping units are not additive.