BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,280-acre Bakken spacing unit

T156N R101W sections 26, 35

Spacing unit12 wells allowed · order 36005Tyrone-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T156N R101W sections 26, 35
Pool
Tyrone-Bakken
Zone
Zone VII
County
Williams County
Surveyed wells inside
8
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-9bbd73f5fb405d38b1f3
Wells allowed by the latest linked order
12
Wells assigned to this unit
7
Pending permits inside
0
Balance under the allowance
+4
First linked order
Oct 14, 2010
Laterals that still fit (Nov 2026 method)
1 (0.95 two-mile equivalents)
Neighbourhood target density
7.42 two-mile laterals per 1,280 acres
Density drilled so far
6.57 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

LOGAN 5601 11-26 8TARLYSS 5601 14-26TDALE 5601 14-26BLOGAN 5601 11-26 7BLOGAN 5601 13-26 4TLOGAN 5601 42-35HLOGAN 5601 13-26 5BMCCAULEY 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
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%
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 15469Case 13196Established the spacing unit, 1 well allowedOASIS PETROLEUM NORTH AMERICA LLC
  2. Order 17919Case 15664Established the spacing unit, 1 well allowedPetro-Hunt
  3. Order 17919Case 15664Designated the spacing unitPetro-Hunt
  4. Order 18172Case 15171Established the spacing unit, 4 wells allowed
  5. Order 19743Case 17473Pooled all interests in the unitOASIS PETROLEUM NORTH AMERICA LLC
  6. Order 21127Case 18826Established the spacing unit, 8 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  7. Order 23166Case 20860Designated the spacing unit, 12 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  8. Order 23797Case 21455Established the spacing unit, 12 wells allowedOASIS PETROLEUM NORTH AMERICA 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.