BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,280-acre Bakken spacing unit

T158N R99W sections 27, 34

Spacing unit4 wells allowed · order 35445Lone Tree Lake-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T158N R99W sections 27, 34
Pool
Lone Tree Lake-Bakken
Zone
Zone II
County
Williams County
Surveyed wells inside
5
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-87375cdf6fefe1623116
Wells allowed by the latest linked order
4
Wells assigned to this unit
4
Pending permits inside
0
Balance under the allowance
-1
First linked order
Feb 10, 2012
Laterals that still fit (Nov 2026 method)
1 (0.96 two-mile equivalents)
Neighbourhood target density
6.2 two-mile laterals per 1,280 acres
Density drilled so far
4.83 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

UPPSALIR 5799 42-11 2BWM HELSTAD 158-99-34C-27-2BWM HELSTAD 158-99-34C-27-3BWM HELSTAD 158-99-34C-27-4BHELSTAD 158-99-34D-27-1H1 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
UPPSALIR 5799 42-11 2BENERPLUS RESOURCES USA CORPORATIONDrilling (DRL)10,414 ft50%
WM HELSTAD 158-99-34C-27-2BENERPLUS RESOURCES USA CORPORATIONActive (A)10,294 ft100%
WM HELSTAD 158-99-34C-27-3BENERPLUS RESOURCES USA CORPORATIONActive (A)10,283 ft100%
WM HELSTAD 158-99-34C-27-4BENERPLUS RESOURCES USA CORPORATIONActive (A)10,240 ft100%
HELSTAD 158-99-34D-27-1HENERPLUS RESOURCES USA CORPORATIONActive (A)9,619 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 18446Case 16181Designated the spacing unit, 4 wells allowed
  2. Order 18854Case 16585Established the spacing unit, 4 wells allowed
  3. Order 21218Case 18917Designated the spacing unit, 7 wells allowedCRESCENT POINT ENERGY US CORP.
  4. Order 22882Case 20576Established the spacing unit, 7 wells allowedG3 OPERATING, L.L.C.
  5. Order 24045Case 21691Pooled all interests in the unitHRC OPERATING, LLC
  6. Order 35055Case 32300Designated the spacing unit, 4 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  7. Order 35416Case 32570Established the spacing unit, 4 wells allowedENERPLUS RESOURCES (USA) CORP.

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.