BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

2,560-acre Bakken spacing unit

T156N R101W sections 28, 29, 32, 33

Spacing unit1 wells allowed · order 23166Tyrone-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T156N R101W sections 28, 29, 32, 33
Pool
Tyrone-Bakken
Zone
Zone XI
County
Williams County
Surveyed wells inside
14
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-cf4fa104a14bc3b9ca17
Wells allowed by the latest linked order
1
Wells assigned to this unit
2
Pending permits inside
0
Balance under the allowance
-13
First linked order
Mar 14, 2014
Review note
later_order_likely_missing
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.3 two-mile laterals per 1,280 acres
Density drilled so far
6.66 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

HOLMES 5501 12-5 4BHOLMES 5501 12-5 5THARBOUR 5501 14-5 2THARBOUR 5501 14-4 7BHOLMES HARBOUR 5501 14-5 2BHOLMES 5501 11-5 #2THARBOUR 5501 13-4HHOLMES 5501 11-5 #3BHOLMES 5501 14-5 6THARBOUR 5601 42-33 2BHOLMES 5601 44-32HHARBOUR 5601 42-33 5THARBOUR 5601 42-33 3THARBOUR 5601 42-33 4B1 mi

DMR footprint (NAD83) with the published surface locations of its wells. Laterals run under the unit; pads often sit on a neighbouring section.

Wells inside the unit

WellOperatorStatusLateral inside
HOLMES 5501 12-5 4BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,692 ft100%
HOLMES 5501 12-5 5TOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,361 ft100%
HARBOUR 5501 14-5 2TOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,355 ft100%
HARBOUR 5501 14-4 7BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,249 ft100%
HOLMES HARBOUR 5501 14-5 2BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,151 ft100%
HOLMES 5501 11-5 #2TOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,141 ft100%
HARBOUR 5501 13-4HOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,045 ft100%
HOLMES 5501 11-5 #3BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,999 ft100%
HOLMES 5501 14-5 6TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,940 ft100%
HARBOUR 5601 42-33 2BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,816 ft100%
HOLMES 5601 44-32HOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,723 ft100%
HARBOUR 5601 42-33 5TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,653 ft100%
HARBOUR 5601 42-33 3TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,539 ft100%
HARBOUR 5601 42-33 4BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,526 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 23166Case 20860Established the spacing unit, 1 well allowedOASIS PETROLEUM NORTH AMERICA LLC
  2. Order 23166Case 20860Designated the spacing unitOASIS PETROLEUM NORTH AMERICA LLC
  3. Order 25884Case 23544Pooled all interests in the unitOASIS PETROLEUM NORTH AMERICA LLC
  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

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