BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

2,560-acre Bakken spacing unit

T151N R93W sections 16, 17, 20, 21

Spacing unit2 wells allowed · order 31536Reunion Bay-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T151N R93W sections 16, 17, 20, 21
Pool
Reunion Bay-Bakken
Zone
Zone XVIII
County
Mountrail County
Surveyed wells inside
21
Most wells operated by
Burlington / Marathon
Unit id
dsu-a3ffc712bd7cfc66a222
Wells allowed by the latest linked order
2
Wells assigned to this unit
0
Pending permits inside
0
Balance under the allowance
-19
First linked order
Apr 11, 2017
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.69 two-mile laterals per 1,280 acres
Density drilled so far
9.64 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

BECKY USA 21-17TFHMCROBERTS USA 14-21TFHELLA USA 11-16HASLAK USA 44-21TFHNESS USA 31-17HWALSH USA 11-16TFHDONAASON USA 34-21TFHSUNWALL USA 41-17HNOKELBY USA 34-21HAKKO USA 44-21HSALVESON USA 24-21HBALLMEYER USA 41-17TFHGERHARDT USA 14-21HHANS USA 31-17TFHVERNE USA 24-21TFHRANDI USA 41-17HNUGGET USA 14-20TFHMARTHA GRUBE USA 14-20HSHOBE 24-20HJERRY PENNINGTON USA 34-21HSIBYL USA 44-19TFH1 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
BECKY USA 21-17TFHMARATHON OIL COMPANYActive (A)10,390 ft100%
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%
NESS USA 31-17HMARATHON OIL COMPANYActive (A)10,222 ft100%
WALSH USA 11-16TFHMARATHON OIL COMPANYActive (A)10,203 ft100%
DONAASON USA 34-21TFHMARATHON OIL COMPANYActive (A)10,202 ft100%
SUNWALL USA 41-17HMARATHON OIL COMPANYActive (A)10,193 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%
BALLMEYER USA 41-17TFHMARATHON OIL COMPANYActive (A)10,149 ft100%
GERHARDT USA 14-21HMARATHON OIL COMPANYActive (A)10,119 ft100%
HANS USA 31-17TFHMARATHON OIL COMPANYActive (A)10,117 ft100%
VERNE USA 24-21TFHMARATHON OIL COMPANYActive (A)10,082 ft100%
RANDI USA 41-17HMARATHON OIL COMPANYActive (A)10,065 ft100%
NUGGET USA 14-20TFHMARATHON OIL COMPANYActive (A)9,964 ft100%
MARTHA GRUBE USA 14-20HMARATHON OIL COMPANYActive (A)9,853 ft100%
SHOBE 24-20HMARATHON OIL COMPANYActive (A)9,367 ft100%
JERRY PENNINGTON USA 34-21HMARATHON OIL COMPANYActive (A)9,270 ft100%
SIBYL USA 44-19TFHMARATHON OIL COMPANYActive (A)700 ft7%

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 27720Case 25315Designated the spacing unitWPX ENERGY WILLISTON, LLC
  2. Order 27982Case 25574Established the spacing unitMARATHON OIL CO.
  3. Order 28959Case 26526Pooled all interests in the unitMARATHON OIL CO.
  4. Order 29804Case 27360Designated the spacing unit
  5. Order 29891Case 27448Designated the spacing unit, 2 wells allowedMARATHON OIL CO.
  6. Order 29912Case 27469Established the spacing unit, 2 wells allowedMARATHON OIL CO.
  7. Order 30725Case 28270Pooled all interests in the unitMARATHON 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

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