BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

2,560-acre Bakken spacing unit

T145N R94W sections 3, 4, 9, 10

Spacing unitKilldeer-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T145N R94W sections 3, 4, 9, 10
Pool
Killdeer-Bakken
Zone
Zone VII
County
Dunn County
Surveyed wells inside
21
Most wells operated by
MARATHON OIL COMPANY
Unit id
dsu-48a7f0f1cd4750c5a4d8
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.71 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

REISS RANCH 24-10HLIL J. REISS 34-9HDEMAY 21-4HMcCONNELL 11-4HFINHOLT 34-10HROONEY 34-9HFITTERER 11-3HSAGLER 21-4TFHSWENSON 24-10HARLENE 11-4TFHDURKEE 44-10HSTELLA 44-10HOSMUND 34-9TFHDENNY 11-3TFHLOWRY 44-9TFHGUSTAV 44-9TFHGUNVALDSON 44-9HBROWN 24-9HWINNIFRED BROWN 34-10HDECORAH 44-10TFHRYAN MADISON 1-H1 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
REISS RANCH 24-10HMARATHON OIL COMPANYActive (A)19,265 ft100%
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%
FINHOLT 34-10HMARATHON OIL COMPANYActive (A)10,380 ft100%
ROONEY 34-9HMARATHON OIL COMPANYActive (A)10,338 ft100%
FITTERER 11-3HMARATHON OIL COMPANYActive (A)10,312 ft100%
SAGLER 21-4TFHMARATHON OIL COMPANYActive (A)10,309 ft100%
SWENSON 24-10HMARATHON OIL COMPANYActive (A)10,273 ft100%
ARLENE 11-4TFHMARATHON OIL COMPANYActive (A)10,264 ft100%
DURKEE 44-10HMARATHON OIL COMPANYActive (A)10,251 ft100%
STELLA 44-10HMARATHON OIL COMPANYActive (A)10,220 ft100%
OSMUND 34-9TFHMARATHON OIL COMPANYActive (A)10,218 ft100%
DENNY 11-3TFHMARATHON OIL COMPANYActive (A)10,215 ft100%
LOWRY 44-9TFHMARATHON OIL COMPANYActive (A)10,037 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%
WINNIFRED BROWN 34-10HMARATHON OIL COMPANYPlugged and abandoned (PA)8,872 ft100%
DECORAH 44-10TFHMARATHON OIL COMPANYActive (A)7,159 ft70%
RYAN MADISON 1-HRYAN EXPLORATION, INC.Plugged and abandoned (PA)5,495 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 29892Case 27449Established the spacing unitMARATHON OIL CO.
  2. Order 29915Case 27472Designated the spacing unitMARATHON OIL CO.
  3. Order 30727Case 28272Pooled all interests in the unitMARATHON OIL CO.
  4. Order 32749Case 30143Designated the spacing 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.