BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T151N R93W sections 4, 9

Spacing unit8 wells allowed · order 31536Reunion Bay-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T151N R93W sections 4, 9
Pool
Reunion Bay-Bakken
Zone
Zone VI
County
Mountrail County
Surveyed wells inside
9
Most wells operated by
Burlington / Marathon
Unit id
dsu-8efab7b81df382fff102
Wells allowed by the latest linked order
8
Wells assigned to this unit
9
Pending permits inside
0
Balance under the allowance
-1
First linked order
Jun 26, 2007
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
1 (0.95 two-mile equivalents)
Neighbourhood target density
9.64 two-mile laterals per 1,280 acres
Density drilled so far
8.41 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

ARDIS USA 21-4TFHSHORTALL USA 14-9HBINTZ USA 21-4TFHFLOYD USA 21-4HERICKSON 31-4HPENNINGTON USA 31-4HPENNINGTON 31-4TFHRENN 41-4TFHPENNINGTON 41-4H1 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
ARDIS USA 21-4TFHMARATHON OIL COMPANYActive (A)10,338 ft100%
SHORTALL USA 14-9HMARATHON OIL COMPANYActive (A)10,102 ft100%
BINTZ USA 21-4TFHMARATHON OIL COMPANYActive (A)10,101 ft100%
FLOYD USA 21-4HMARATHON OIL COMPANYActive (A)10,100 ft100%
ERICKSON 31-4HMARATHON OIL COMPANYActive (A)10,009 ft100%
PENNINGTON USA 31-4HMARATHON OIL COMPANYActive (A)9,992 ft100%
PENNINGTON 31-4TFHMARATHON OIL COMPANYActive (A)9,583 ft100%
RENN 41-4TFHMARATHON OIL COMPANYActive (A)9,545 ft100%
PENNINGTON 41-4HMARATHON OIL COMPANYActive (A)8,786 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 11180Case 9518Established the spacing unitMARATHON OIL CO.
  2. Order 12896Case 10896Established the spacing unitMARATHON OIL CO.
  3. Order 13281Case 11201Designated the spacing unit
  4. Order 14945Case 12684Designated the spacing unitMARATHON OIL CO.
  5. Order 15256Case 12989Designated the spacing unit, 2 wells allowedMARATHON OIL CO.
  6. Order 17198Case 14948Established the spacing unit, 4 wells allowedMARATHON OIL CO.
  7. Order 18909Case 16640Established the spacing unit, 7 wells allowedMARATHON OIL CO.
  8. Order 29891Case 27448Designated the spacing unit, 8 wells allowedMARATHON OIL CO.
  9. Order 29910Case 27467Established the spacing unit, 8 wells allowedMARATHON OIL 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

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