BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

2,560-acre Bakken spacing unit

T156N R102W sections 29, 30, 31, 32

Spacing unitBull Butte-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T156N R102W sections 29, 30, 31, 32
Pool
Bull Butte-Bakken
Zone
Zone VII
County
Williams County
Surveyed wells inside
12
Most wells operated by
OASIS PETROLEUM NORTH AMERICA LLC
Unit id
dsu-a351ad14e9050a3f8172
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
5.75 two-mile laterals per 1,280 acres
Density drilled so far
4.37 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

SAM 30-31 #1-HSAM 30-31 #7TFHSAM 30-31 #3HSAM 30-31 XE #1HSAM 30-31 #6TFHDRIESBACH 5602 44-32HCyclone 5502 11-17 3BCyclone 5502 11-17 4BCyclone 5502 11-17 2BPhoenix 5602 13-17 4BPhoenix 5602 13-17 2BPhoenix 5602 13-17 3B1 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
SAM 30-31 #1-HDEVON ENERGY WILLISTON, L.L.C.Active (A)10,069 ft100%
SAM 30-31 #7TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)10,021 ft100%
SAM 30-31 #3HDEVON ENERGY WILLISTON, L.L.C.Active (A)10,015 ft100%
SAM 30-31 XE #1HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,989 ft100%
SAM 30-31 #6TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,979 ft100%
DRIESBACH 5602 44-32HOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,702 ft100%
Cyclone 5502 11-17 3BOASIS PETROLEUM NORTH AMERICA LLCActive (A)5,516 ft26%
Cyclone 5502 11-17 4BOASIS PETROLEUM NORTH AMERICA LLCActive (A)5,426 ft32%
Cyclone 5502 11-17 2BOASIS PETROLEUM NORTH AMERICA LLCActive (A)5,173 ft32%
Phoenix 5602 13-17 4BOASIS PETROLEUM NORTH AMERICA LLCActive (A)5,165 ft33%
Phoenix 5602 13-17 2BOASIS PETROLEUM NORTH AMERICA LLCActive (A)5,146 ft33%
Phoenix 5602 13-17 3BOASIS PETROLEUM NORTH AMERICA LLCActive (A)5,140 ft33%

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 27634Case 25215Established the spacing unitSTATOIL OIL AND GAS LP
  2. Order 27752Case 25347Pooled all interests in the unitSTATOIL OIL & GAS LP
  3. Order 32131Case 29561Designated the spacing unitOASIS PETROLEUM NORTH AMERICA LLC
  4. Order 35807Case 32881Designated the spacing unitPHOENIX OPERATING LLC

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

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