BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

1,280-acre Bakken spacing unit

T145N R94W sections 16, 21

Spacing unit4 wells allowed · order 32749Killdeer-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T145N R94W sections 16, 21
Pool
Killdeer-Bakken
Zone
Zone I
County
Dunn County
Surveyed wells inside
9
Most wells operated by
Burlington / Marathon
Unit id
dsu-c093846799cf9dc79c0e
Wells allowed by the latest linked order
4
Wells assigned to this unit
5
Pending permits inside
0
Balance under the allowance
-5
First linked order
Jul 27, 2007
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
1 (0.96 two-mile equivalents)
Neighbourhood target density
9.54 two-mile laterals per 1,280 acres
Density drilled so far
8.65 per 1,280 acres

Room to drill: 1 lateral 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

SORENSON 11-16HPENTICOFF 21-16TFHJENDRICK 21-16HCOOLEY 11-16TFHHELSETH 41-16HHERRBOLT 31-16TFHKENYON 41-16TFHL.R. 21-16HJOHN REISS JR 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
SORENSON 11-16HMARATHON OIL COMPANYActive (A)10,572 ft81%
PENTICOFF 21-16TFHMARATHON OIL COMPANYActive (A)10,452 ft81%
JENDRICK 21-16HMARATHON OIL COMPANYActive (A)10,383 ft84%
COOLEY 11-16TFHMARATHON OIL COMPANYActive (A)10,372 ft81%
HELSETH 41-16HMARATHON OIL COMPANYActive (A)10,336 ft100%
HERRBOLT 31-16TFHMARATHON OIL COMPANYActive (A)10,316 ft100%
KENYON 41-16TFHMARATHON OIL COMPANYActive (A)10,270 ft100%
L.R. 21-16HMARATHON OIL COMPANYActive (A)9,425 ft100%
JOHN REISS JR 34-21HMARATHON OIL COMPANYActive (A)9,006 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 11192Case 9527Established the spacing unitMARATHON OIL CO.
  2. Order 11687Case 9921Designated the spacing unitMarathon
  3. Order 12130Case 10262Pooled 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 30290Case 27838Designated the spacing unit, 8 wells allowedMARATHON OIL CO.
  10. Order 30375Case 27923Established the spacing unit, 8 wells allowedMARATHON OIL CO.
  11. Order 31800Case 29231Established the spacing unit, 4 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.