BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

2,560-acre Bakken spacing unit

T156N R100W sections 4, 5, 8, 9

Spacing unitEast Fork-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T156N R100W sections 4, 5, 8, 9
Pool
East Fork-Bakken
Zone
Zone X
County
Williams County
Surveyed wells inside
13
Most wells operated by
WHITING OIL AND GAS CORPORATION
Unit id
dsu-6a15196f3bf44b0668f3
Laterals that still fit (Nov 2026 method)
1 (1 two-mile equivalents)
Neighbourhood target density
7.5 two-mile laterals per 1,280 acres
Density drilled so far
5.75 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

IRGENS 41-17-2HIRGENS 41-17-1HUIRGENS 41-17-3HIRGENS 41-17-2TFHIRGENS 41-17-1TFHCAVALLI STATE 156-100-9-4-11TFHANNA 14-8-2HCAVALLI STATE 34-9-4HANNA 14-8-1TFHANNA 14-8-1HUCAVALLI STATE 156-100-9-4-1HANNA 156-100-8-5-1HCAVALLI STATE 34-9-5HU1 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
IRGENS 41-17-2HWHITING OIL AND GAS CORPORATIONActive (A)11,287 ft100%
IRGENS 41-17-1HUWHITING OIL AND GAS CORPORATIONActive (A)10,881 ft100%
IRGENS 41-17-3HWHITING OIL AND GAS CORPORATIONActive (A)10,863 ft100%
IRGENS 41-17-2TFHWHITING OIL AND GAS CORPORATIONActive (A)10,819 ft100%
IRGENS 41-17-1TFHWHITING OIL AND GAS CORPORATIONActive (A)10,437 ft100%
CAVALLI STATE 156-100-9-4-11TFHWHITING OIL AND GAS CORPORATIONActive (A)10,414 ft100%
ANNA 14-8-2HWHITING OIL AND GAS CORPORATIONActive (A)10,226 ft100%
CAVALLI STATE 34-9-4HWHITING OIL AND GAS CORPORATIONActive (A)10,215 ft100%
ANNA 14-8-1TFHWHITING OIL AND GAS CORPORATIONActive (A)10,196 ft100%
ANNA 14-8-1HUWHITING OIL AND GAS CORPORATIONActive (A)10,103 ft100%
CAVALLI STATE 156-100-9-4-1HWHITING OIL AND GAS CORPORATIONActive (A)10,042 ft100%
ANNA 156-100-8-5-1HWHITING OIL AND GAS CORPORATIONActive (A)9,965 ft100%
CAVALLI STATE 34-9-5HUWHITING OIL AND GAS CORPORATIONActive (A)1,801 ft16%

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 23697Case 21380Designated the spacing unitCONTINENTAL RESOURCES, INC.
  2. Order 26317Case 23974Established the spacing unitWHITING OIL AND GAS CORP.
  3. Order 28355Case 25942Pooled all interests in the unitWHITING OIL AND GAS CORP.
  4. Order 35871Case 32942Designated the spacing unitCONTINENTAL RESOURCES, 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.