BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

2,560-acre Bakken spacing unit

T156N R101W sections 25, 26, 35, 36

Spacing unitTyrone-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T156N R101W sections 25, 26, 35, 36
Pool
Tyrone-Bakken
Zone
Zone XI
County
Williams County
Surveyed wells inside
13
Most wells operated by
OASIS PETROLEUM NORTH AMERICA LLC
Unit id
dsu-28cb13a47c52211f53f3
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.47 two-mile laterals per 1,280 acres
Density drilled so far
5.7 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

STATE 34-36-2HSTATE 34-36-1HSTATE 34-36-1TFHLOGAN 5601 11-26 8TARLYSS 5601 14-26TDALE 5601 14-26BLOGAN 5601 11-26 7BLOGAN 5601 13-26 4TLOGAN 5601 42-35HLOGAN 5601 13-26 5BCORNABEAN 156-101-25-36-1HSTATE 34-36-2TFHMCCAULEY LOGAN 5601 11-26 6T1 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
STATE 34-36-2HWHITING OIL AND GAS CORPORATIONActive (A)12,148 ft100%
STATE 34-36-1HWHITING OIL AND GAS CORPORATIONActive (A)10,655 ft100%
STATE 34-36-1TFHWHITING OIL AND GAS CORPORATIONActive (A)9,825 ft100%
LOGAN 5601 11-26 8TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,737 ft100%
ARLYSS 5601 14-26TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,716 ft100%
DALE 5601 14-26BOASIS PETROLEUM NORTH AMERICA LLCPlugged and abandoned (PA)9,643 ft100%
LOGAN 5601 11-26 7BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,637 ft100%
LOGAN 5601 13-26 4TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,510 ft100%
LOGAN 5601 42-35HOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,497 ft100%
LOGAN 5601 13-26 5BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,439 ft100%
CORNABEAN 156-101-25-36-1HWHITING OIL AND GAS CORPORATIONActive (A)9,404 ft100%
STATE 34-36-2TFHWHITING OIL AND GAS CORPORATIONActive (A)9,366 ft100%
MCCAULEY LOGAN 5601 11-26 6TOASIS PETROLEUM NORTH AMERICA LLCActive (A)1,793 ft18%

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 25727Case 23387Designated the spacing unitKODIAK OIL & GAS (USA) INC.
  2. Order 26317Case 23974Established the spacing unitWHITING OIL AND GAS CORP.
  3. Order 28350Case 25937Pooled all interests in the unitWHITING OIL AND GAS CORP.
  4. Order 36005Case 33055Designated the spacing unitSLAWSON EXPLORATION COMPANY, INC.

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.