BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

1,280-acre Bakken spacing unit

T146N R95W sections 1, 12

Spacing unit7 wells allowed · order 31661Chimney Butte-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T146N R95W sections 1, 12
Pool
Chimney Butte-Bakken
Zone
Zone III
County
Dunn County
Surveyed wells inside
8
Most wells operated by
Burlington / Marathon
Unit id
dsu-7a02c016a5676bc4e891
Wells allowed by the latest linked order
7
Wells assigned to this unit
8
Pending permits inside
0
Balance under the allowance
-1
First linked order
May 24, 2005
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
3 (2.85 two-mile equivalents)
Neighbourhood target density
10.7 two-mile laterals per 1,280 acres
Density drilled so far
7.51 per 1,280 acres

Room to drill: 3 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

MARLIN 24-12HSCHOKOWSKY 44-12HSARAH 24-12TFHDOROTHY 14-12TFHMARLIN 44-12HMITTELSTADT 34-12HHONDO 34-12TFHMARLIN 14-12H1 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
MARLIN 24-12HMARATHON OIL COMPANYActive (A)11,213 ft100%
SCHOKOWSKY 44-12HMARATHON OIL COMPANYInactive (IA)10,309 ft100%
SARAH 24-12TFHMARATHON OIL COMPANYActive (A)10,201 ft100%
DOROTHY 14-12TFHMARATHON OIL COMPANYActive (A)10,037 ft100%
MARLIN 44-12HMARATHON OIL COMPANYActive (A)9,953 ft100%
MITTELSTADT 34-12HMARATHON OIL COMPANYActive (A)9,838 ft100%
HONDO 34-12TFHMARATHON OIL COMPANYActive (A)9,821 ft100%
MARLIN 14-12HMARATHON OIL COMPANYPlugged and abandoned (PA)8,132 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 10025Case 8537Established the spacing unitBLACK ROCK RESOURCES, LLC
  2. Order 10839Case 9226Designated the spacing unit
  3. Order 13856Case 11701Designated the spacing unitXTO ENERGY INC.
  4. Order 14362Case 12112Designated the spacing unit, 2 wells allowedMARATHON OIL CO. TO AMEND THE APPLICABLE ORDERS
  5. Order 15253Case 12986Listed the unit in a pool zone table, 4 wells allowedMARATHON OIL CO.
  6. Order 15459Case 12291Listed the unit in a pool zone table, 3 wells allowed
  7. Order 15644Case 13368Established the spacing unit, 4 wells allowedMARATHON OIL CO.
  8. Order 18849Case 15332Designated the spacing unit, 4 wells allowed
  9. Order 18404Case 16140Established the spacing unit, 7 wells allowedMARATHON OIL CO.
  10. Order 20313Case 18044Designated the spacing unit, 7 wells allowedBURLINGTON RESOURCES OIL & GAS CO. LP

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.