BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,280-acre Bakken spacing unit

T154N R96W sections 18, 19

Spacing unit12 wells allowed · order 33838Grinnell-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T154N R96W sections 18, 19
Pool
Grinnell-Bakken
Zone
Zone II
County
Williams County
Surveyed wells inside
8
Most wells operated by
Continental Resources
Unit id
dsu-943834191d1423c901fc
Wells allowed by the latest linked order
12
Wells assigned to this unit
6
Pending permits inside
0
Balance under the allowance
+4
First linked order
Aug 20, 2009
Laterals that still fit (Nov 2026 method)
1 (0.95 two-mile equivalents)
Neighbourhood target density
8.57 two-mile laterals per 1,280 acres
Density drilled so far
7.89 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

ARLEY 21X-18EArley 5-18HArley 6-18H1ARLEY 21X-18AARLEY 21X-18BARLEY 21X-18FSARA 41X-13HXEArley 7-18HSL1 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
ARLEY 21X-18ECONTINENTAL RESOURCES, INC.Active (A)16,945 ft100%
Arley 5-18HCONTINENTAL RESOURCES, INC.Active (A)10,133 ft100%
Arley 6-18H1CONTINENTAL RESOURCES, INC.Active (A)10,114 ft100%
ARLEY 21X-18ACONTINENTAL RESOURCES, INC.Active (A)10,031 ft100%
ARLEY 21X-18BCONTINENTAL RESOURCES, INC.Active (A)9,495 ft100%
ARLEY 21X-18FCONTINENTAL RESOURCES, INC.Active (A)9,315 ft100%
SARA 41X-13HXECONTINENTAL RESOURCES, INC.Abandoned (AB)9,190 ft92%
Arley 7-18HSLCONTINENTAL RESOURCES, INC.Active (A)7,965 ft79%

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 13372Case 11276Designated the spacing unitXTO ENERGY INC.
  2. Order 13378Case 11282Designated the spacing unit
  3. Order 14595Case 12343Designated the spacing unit, 2 wells allowedXTO ENERGY INC.
  4. Order 20425Case 18156Pooled all interests in the unitXTO ENERGY INC.
  5. Order 20280Case 18011Established the spacing unit, 8 wells allowedXTO ENERGY INC.
  6. Order 25993Case 23652Designated the spacing unit, 12 wells allowedWHITING OIL AND GAS CORP.
  7. Order 26289Case 23946Established the spacing unit, 12 wells allowedXTO ENERGY 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

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