BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

1,280-acre Bakken spacing unit

T145N R94W sections 4, 9

Spacing unit9 wells allowed · order 32749Killdeer-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T145N R94W sections 4, 9
Pool
Killdeer-Bakken
Zone
Zone V
County
Dunn County
Surveyed wells inside
11
Most wells operated by
Burlington / Marathon
Unit id
dsu-b9778aeb8edced4fdbe0
Wells allowed by the latest linked order
9
Wells assigned to this unit
10
Pending permits inside
0
Balance under the allowance
-2
First linked order
Oct 26, 2007
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.75 two-mile laterals per 1,280 acres
Density drilled so far
10.97 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

LIL J. REISS 34-9HDEMAY 21-4HMcCONNELL 11-4HROONEY 34-9HSAGLER 21-4TFHARLENE 11-4TFHOSMUND 34-9TFHGUSTAV 44-9TFHGUNVALDSON 44-9HBROWN 24-9HLOWRY 44-9TFH1 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
LIL J. REISS 34-9HMARATHON OIL COMPANYActive (A)13,949 ft100%
DEMAY 21-4HMARATHON OIL COMPANYActive (A)11,979 ft100%
McCONNELL 11-4HMARATHON OIL COMPANYActive (A)11,298 ft100%
ROONEY 34-9HMARATHON OIL COMPANYActive (A)10,338 ft100%
SAGLER 21-4TFHMARATHON OIL COMPANYActive (A)10,309 ft100%
ARLENE 11-4TFHMARATHON OIL COMPANYActive (A)10,264 ft100%
OSMUND 34-9TFHMARATHON OIL COMPANYActive (A)10,218 ft100%
GUSTAV 44-9TFHMARATHON OIL COMPANYActive (A)9,990 ft100%
GUNVALDSON 44-9HMARATHON OIL COMPANYActive (A)9,957 ft100%
BROWN 24-9HMARATHON OIL COMPANYPlugged and abandoned (PA)9,340 ft100%
LOWRY 44-9TFHMARATHON OIL COMPANYActive (A)8,306 ft83%

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 12902Case 10902Pooled all interests in the unitMARATHON OIL CO.
  4. Order 13506Case 11399Designated the spacing unit
  5. Order 15645Case 13369Established the spacing unit, 4 wells allowedMARATHON OIL CO.
  6. Order 18256Case 15993Designated the spacing unit, 7 wells allowedDENBURY ONSHORE, LLC
  7. Order 18396Case 16132Established the spacing unit, 7 wells allowedMARATHON OIL CO.
  8. Order 29892Case 27449Designated the spacing unit, 9 wells allowedMARATHON OIL CO.
  9. Order 29915Case 27472Established the spacing unit, 9 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

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