BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T151N R93W sections 15, 22

Spacing unit7 wells allowed · order 31536Reunion Bay-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T151N R93W sections 15, 22
Pool
Reunion Bay-Bakken
Zone
Zone V
County
Mountrail County
Surveyed wells inside
8
Most wells operated by
Burlington / Marathon
Unit id
dsu-9fe138ce688baa1f371f
Wells allowed by the latest linked order
7
Wells assigned to this unit
7
Pending permits inside
0
Balance under the allowance
-1
First linked order
May 25, 2007
Laterals that still fit (Nov 2026 method)
2 (1.9 two-mile equivalents)
Neighbourhood target density
9.6 two-mile laterals per 1,280 acres
Density drilled so far
7.52 per 1,280 acres

Room to drill: 2 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

BEATRICE USA 31-15TFHESTHER USA 21-15HDORIS USA 21-15TFHFRANCES USA 11-15HSURA USA 44-21TFHSHIRLEY PENNINGTON USA 14-22HRUDOLPH USA 41-15TFHBOTTLESON 34-22H1 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
BEATRICE USA 31-15TFHMARATHON OIL COMPANYActive (A)10,406 ft100%
ESTHER USA 21-15HMARATHON OIL COMPANYActive (A)10,321 ft100%
DORIS USA 21-15TFHMARATHON OIL COMPANYActive (A)10,314 ft100%
FRANCES USA 11-15HMARATHON OIL COMPANYActive (A)10,218 ft100%
SURA USA 44-21TFHMARATHON OIL COMPANYActive (A)9,925 ft98%
SHIRLEY PENNINGTON USA 14-22HMARATHON OIL COMPANYActive (A)9,896 ft100%
RUDOLPH USA 41-15TFHMARATHON OIL COMPANYActive (A)9,580 ft100%
BOTTLESON 34-22HMARATHON OIL COMPANYActive (A)9,074 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 11098Case 9453Established the spacing unitMARATHON OIL CO.
  2. Order 12482Case 10551Designated the spacing unit
  3. Order 14945Case 12684Designated the spacing unitMARATHON OIL CO.
  4. Order 15256Case 12989Designated the spacing unit, 2 wells allowedMARATHON OIL CO.
  5. Order 17198Case 14948Established the spacing unit, 4 wells allowedMARATHON OIL CO.
  6. Order 18909Case 16640Established the spacing unit, 7 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.