BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T151N R93W sections 16, 21

Spacing unit10 wells allowed · order 31536Reunion Bay-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T151N R93W sections 16, 21
Pool
Reunion Bay-Bakken
Zone
Zone IX
County
Mountrail County
Surveyed wells inside
11
Most wells operated by
Burlington / Marathon
Unit id
dsu-f781f3bf346768549e40
Wells allowed by the latest linked order
10
Wells assigned to this unit
11
Pending permits inside
0
Balance under the allowance
-1
First linked order
Apr 24, 2008
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.64 two-mile laterals per 1,280 acres
Density drilled so far
10.6 per 1,280 acres

Room to drill: 0 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

MCROBERTS USA 14-21TFHELLA USA 11-16HASLAK USA 44-21TFHWALSH USA 11-16TFHDONAASON USA 34-21TFHNOKELBY USA 34-21HAKKO USA 44-21HSALVESON USA 24-21HGERHARDT USA 14-21HVERNE USA 24-21TFHJERRY PENNINGTON USA 34-21H1 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
MCROBERTS USA 14-21TFHMARATHON OIL COMPANYActive (A)10,243 ft100%
ELLA USA 11-16HMARATHON OIL COMPANYActive (A)10,233 ft100%
ASLAK USA 44-21TFHMARATHON OIL COMPANYActive (A)10,229 ft100%
WALSH USA 11-16TFHMARATHON OIL COMPANYActive (A)10,203 ft100%
DONAASON USA 34-21TFHMARATHON OIL COMPANYActive (A)10,202 ft100%
NOKELBY USA 34-21HMARATHON OIL COMPANYActive (A)10,174 ft100%
AKKO USA 44-21HMARATHON OIL COMPANYActive (A)10,173 ft100%
SALVESON USA 24-21HMARATHON OIL COMPANYActive (A)10,164 ft100%
GERHARDT USA 14-21HMARATHON OIL COMPANYActive (A)10,119 ft100%
VERNE USA 24-21TFHMARATHON OIL COMPANYActive (A)10,082 ft100%
JERRY PENNINGTON USA 34-21HMARATHON OIL COMPANYActive (A)9,270 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 11763Case 9979Established 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 19228Case 16960Pooled all interests in the unitMARATHON OIL CO.
  7. Order 18909Case 16640Established the spacing unit, 7 wells allowedMARATHON OIL CO.
  8. Order 29891Case 27448Designated the spacing unit, 10 wells allowedMARATHON OIL CO.
  9. Order 29911Case 27468Established the spacing unit, 10 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.