BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

2,560-acre Bakken spacing unit

T155N R91W sections 2, 3, 10, 11

Spacing unitStanley-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T155N R91W sections 2, 3, 10, 11
Pool
Stanley-Bakken
Zone
Zone XXII
County
Mountrail County
Surveyed wells inside
14
Most wells operated by
STEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLC
Unit id
dsu-3b655377acb3c7cd4f3f
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.5 two-mile laterals per 1,280 acres
Density drilled so far
5.41 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

GREENBRIER 15591-0211-4HGreenbrier 15591W-0211- 6HGreenbrier 15591W-0211- 5HGreenbrier 15591-0211-3HSLJOHN PAUL 11-2H-155-91RONALD CARTER 11-2H-155-91ALLISON ANN 10-3HANTHONY ROBERT 10-3HCRAIG ALLEN 10-3HAMY ELIZABETH 11-2HGreenbrier 15591W-0211- 7HSLWADE MORRIS 10-3HWASCANA JELLESED 2HWASCANA SCHAEFER 3H1 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
GREENBRIER 15591-0211-4HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)10,366 ft100%
Greenbrier 15591W-0211- 6HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)10,305 ft100%
Greenbrier 15591W-0211- 5HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)10,304 ft100%
Greenbrier 15591-0211-3HSLSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)10,296 ft100%
JOHN PAUL 11-2H-155-91STEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)9,764 ft100%
RONALD CARTER 11-2H-155-91STEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)9,764 ft100%
ALLISON ANN 10-3HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)9,751 ft100%
ANTHONY ROBERT 10-3HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)9,104 ft100%
CRAIG ALLEN 10-3HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)8,998 ft100%
AMY ELIZABETH 11-2HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)8,827 ft100%
Greenbrier 15591W-0211- 7HSLSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)8,465 ft83%
WADE MORRIS 10-3HSTEPHENS WILLISTON, LLC DBA SEG WILLISTON, LLCActive (A)8,139 ft100%
WASCANA JELLESED 2HSwanson Oil & Gas LLCActive (A)5,583 ft100%
WASCANA SCHAEFER 3HSwanson Oil & Gas LLCActive (A)4,331 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 32218Case 29633Designated the spacing unitSEG WILLISTON, LLC
  2. Order 32219Case 29634Established the spacing unitSEG WILLISTON, LLC
  3. 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

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