BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T155N R91W sections 1, 12

Spacing unitStanley-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T155N R91W sections 1, 12
Pool
Stanley-Bakken
Zone
Zone VII
County
Mountrail County
Surveyed wells inside
6
Most wells operated by
STEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLC
Unit id
dsu-91a5d481620536f0d600
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
6.9 two-mile laterals per 1,280 acres
Density drilled so far
3.06 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

CABOT 15591-0112-5HCABOT 15591-0112-4HBURKE 27-07HBURKE 4-06HGJOA LYNN 100-12HPURCELL 1-01H1 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
CABOT 15591-0112-5HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)10,284 ft100%
CABOT 15591-0112-4HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)10,208 ft100%
BURKE 27-07HEOG RESOURCES, INC.Active (A)2,979 ft64%
BURKE 4-06HEOG RESOURCES, INC.Active (A)2,882 ft64%
GJOA LYNN 100-12HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)2,852 ft48%
PURCELL 1-01HEOG RESOURCES, INC.Active (A)2,382 ft53%

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 32657Case 30047Designated the spacing unitPHOENIX OPERATING LLC
  2. Order 33029Case 30416Established the spacing unitSEG WILLISTON, LLC
  3. Order 33337Case 30687Pooled all interests in the unitSEG WILLISTON, LLC
  4. Order 35207Case 32436Designated the spacing unitHUNT 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

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