BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

1,280-acre Bakken spacing unit

T145N R95W sections 1, 12

Spacing unit8 wells allowed · order 32749Killdeer-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T145N R95W sections 1, 12
Pool
Killdeer-Bakken
Zone
Zone IV
County
Dunn County
Surveyed wells inside
12
Most wells operated by
Burlington / Marathon
Unit id
dsu-eeb94e5a36a8eb8063cf
Wells allowed by the latest linked order
8
Wells assigned to this unit
10
Pending permits inside
0
Balance under the allowance
-4
First linked order
Oct 26, 2007
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.88 two-mile laterals per 1,280 acres
Density drilled so far
10.41 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

SIMPSON 11-1TFHGRAVES 11-1HNOREEN 44-12TFHLILLEBRIDGE 44-12HSERUM 34-12HROSCOE 21-1HELIZABETH STROMMEN 24-12TFHELIZABETH STROMMEN 24-12HJODI CARLSON 34-12HNORTON 24-12HMUGGLI 44-12HFRYE 41-2TFH1 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
SIMPSON 11-1TFHMARATHON OIL COMPANYActive (A)10,388 ft100%
GRAVES 11-1HMARATHON OIL COMPANYActive (A)10,284 ft100%
NOREEN 44-12TFHMARATHON OIL COMPANYActive (A)10,260 ft100%
LILLEBRIDGE 44-12HMARATHON OIL COMPANYActive (A)10,229 ft100%
SERUM 34-12HMARATHON OIL COMPANYActive (A)10,192 ft100%
ROSCOE 21-1HMARATHON OIL COMPANYActive (A)10,038 ft100%
ELIZABETH STROMMEN 24-12TFHMARATHON OIL COMPANYActive (A)9,807 ft100%
ELIZABETH STROMMEN 24-12HMARATHON OIL COMPANYActive (A)9,672 ft100%
JODI CARLSON 34-12HMARATHON OIL COMPANYPlugged and abandoned (PA)9,271 ft100%
NORTON 24-12HMARATHON OIL COMPANYPlugged and abandoned (PA)9,190 ft100%
MUGGLI 44-12HMARATHON OIL COMPANYActive (A)8,454 ft82%
FRYE 41-2TFHMARATHON OIL COMPANYActive (A)1,788 ft18%

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 11403Case 9691Established the spacing unitMARATHON OIL CO.
  2. Order 11687Case 9921Designated the spacing unitMarathon
  3. Order 12900Case 10900Pooled all interests in the unitMARATHON OIL CO.
  4. Order 13506Case 11399Designated the spacing unit
  5. Order 15645Case 13369Designated the spacing unit, 4 wells allowedMARATHON OIL CO.
  6. Order 15864Case 13588Established the spacing unit, 4 wells allowedMARATHON OIL CO.
  7. Order 18256Case 15993Designated the spacing unit, 7 wells allowedDENBURY ONSHORE, LLC
  8. Order 18396Case 16132Established the spacing unit, 7 wells allowedMARATHON OIL CO.
  9. Order 32733Case 30127Designated the spacing unit, 8 wells allowedMARATHON OIL CO.
  10. Order 32749Case 30143Established 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

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