BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,280-acre Bakken spacing unit

T156N R96W sections 30, 31

Spacing unit2 wells allowed · order 35003Dollar Joe-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T156N R96W sections 30, 31
Pool
Dollar Joe-Bakken
Zone
Zone II
County
Williams County
Surveyed wells inside
10
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-ac60e260caf568a6e4fd
Wells allowed by the latest linked order
2
Wells assigned to this unit
2
Pending permits inside
0
Balance under the allowance
-8
First linked order
Jul 15, 2005
Laterals that still fit (Nov 2026 method)
1 (0.95 two-mile equivalents)
Neighbourhood target density
7.85 two-mile laterals per 1,280 acres
Density drilled so far
5.47 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. 1 more would fit the density but not the spacing rule. 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

OLSON 14-31TFHFOSS 21-30HTri D Ranch 5696 13-18 4BOlson 31-31-3HTri D Ranch 5696 13-18 3BOlson 31-31-4HOlson 31-31HTri D Ranch 5696 13-18 5BOlson 31-31-2HOlson 31-31HU1 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
OLSON 14-31TFHWHITING OIL AND GAS CORPORATIONActive (A)9,302 ft100%
FOSS 21-30HWHITING OIL AND GAS CORPORATIONAbandoned (AB)7,774 ft100%
Tri D Ranch 5696 13-18 4BWHITING OIL AND GAS CORPORATIONActive (A)5,166 ft32%
Olson 31-31-3HWHITING OIL AND GAS CORPORATIONActive (A)5,150 ft33%
Tri D Ranch 5696 13-18 3BWHITING OIL AND GAS CORPORATIONActive (A)5,125 ft34%
Olson 31-31-4HWHITING OIL AND GAS CORPORATIONActive (A)5,091 ft33%
Olson 31-31HWHITING OIL AND GAS CORPORATIONActive (A)5,023 ft33%
Tri D Ranch 5696 13-18 5BWHITING OIL AND GAS CORPORATIONActive (A)5,014 ft33%
Olson 31-31-2HWHITING OIL AND GAS CORPORATIONActive (A)5,008 ft32%
Olson 31-31HUWHITING OIL AND GAS CORPORATIONActive (A)4,917 ft32%

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 10083Case 8586Established the spacing unitBLACK ROCK RESOURCES, LLC,
  2. Order 10660Case 9012Designated the spacing unit
  3. Order 10794Case 9186Pooled all interests in the unitMARATHON OIL COMPANY
  4. Order 14648Case 12392Designated the spacing unitAMERICAN OIL & GAS, INC.
  5. Order 14705Case 12449Designated the spacing unit, 2 wells allowedCONTINENTAL RESOURCES, INC.
  6. Order 18881Case 16612Established the spacing unit, 4 wells allowedWHITING OIL & GAS CORP.
  7. Order 22721Case 20415Established the spacing unit, 8 wells allowedWHITING OIL AND GAS CORP.
  8. Order 31493Case 28942Established the spacing unit, 2 wells allowedWHITING OIL AND GAS 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

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