BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

320-acre Bakken spacing unit

T151N R91W section 23

Spacing unit5 wells allowed · order 35934Parshall-Bakken

Unit facts

Formation
Bakken
Acres
320
Type
Spacing unit
Land described
T151N R91W section 23
Pool
Parshall-Bakken
Zone
Zone II
County
Mountrail County
Surveyed wells inside
2
Most wells operated by
EOG Resources
Unit id
dsu-667554d50f034ea9e9a3
Wells allowed by the latest linked order
5
Wells assigned to this unit
1
Pending permits inside
0
Balance under the allowance
+3
First linked order
Mar 2, 2010
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
8.07 two-mile laterals per 1,280 acres
Density drilled so far
3.18 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. 3 more would fit the density but not the spacing rule. 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

LIBERTY 09-23HLIBERTY 33-1423H1 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
LIBERTY 09-23HEOG RESOURCES, INC.Active (A)4,316 ft100%
LIBERTY 33-1423HEOG RESOURCES, INC.Active (A)4,021 ft49%

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 14315Case 12073Established the spacing unit, 1 well allowedEOG RESOURCES, INC.
  2. Order 14315Case 12073Designated the spacing unitEOG RESOURCES, INC.
  3. Order 20839Case 18553Pooled all interests in the unitEOG RESOURCES, INC.
  4. Order 23226Case 20920Designated the spacing unit, 5 wells allowedEOG RESOURCES, INC.
  5. Order 23314Case 21008Established the spacing unit, 5 wells allowedEOG RESOURCES, INC.
  6. Order 33661Case 30989Designated the spacing unitIRON OIL OPERATING, LLC

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

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