BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

2,560-acre Bakken spacing unit

T155N R101W sections 15, 16, 21, 22

Spacing unitCow Creek-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T155N R101W sections 15, 16, 21, 22
Pool
Cow Creek-Bakken
Zone
Zone IV
County
Williams County
Surveyed wells inside
14
Most wells operated by
OASIS PETROLEUM NORTH AMERICA LLC
Unit id
dsu-f751c6566ec90cd1ff5c
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.24 two-mile laterals per 1,280 acres
Density drilled so far
6.12 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

DRUMMOND 5501 42-21 4TM. MACKLIN 15-22 #4HM. MACKLIN 15-22 #2TFHDRUMMOND 5501 42-21 6TM. MACKLIN 15-22 #7HDRUMMOND 5501 41-21 8TM. MACKLIN 15-22 1HM. MACKLIN 15-22 #5HDRUMMOND 5501 42-21 5BDRUMMOND 5501 42-21 3BBUD L 5501 44-21TDRUMMOND 5501 41-21 7BDRUMMOND 5501 44-21HTWOBINS 5501 41-21 9TX1 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
DRUMMOND 5501 42-21 4TOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,285 ft100%
M. MACKLIN 15-22 #4HDEVON ENERGY WILLISTON, L.L.C.Active (A)10,041 ft100%
M. MACKLIN 15-22 #2TFHDEVON ENERGY WILLISTON, L.L.C.Active (A)9,901 ft100%
DRUMMOND 5501 42-21 6TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,842 ft100%
M. MACKLIN 15-22 #7HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,803 ft100%
DRUMMOND 5501 41-21 8TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,676 ft100%
M. MACKLIN 15-22 1HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,585 ft100%
M. MACKLIN 15-22 #5HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,570 ft100%
DRUMMOND 5501 42-21 5BOASIS PETROLEUM NORTH AMERICA LLCAbandoned (AB)9,512 ft100%
DRUMMOND 5501 42-21 3BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,490 ft100%
BUD L 5501 44-21TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,476 ft100%
DRUMMOND 5501 41-21 7BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,388 ft100%
DRUMMOND 5501 44-21HOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,363 ft100%
TWOBINS 5501 41-21 9TXOASIS PETROLEUM NORTH AMERICA LLCActive (A)3,280 ft35%

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 22307Case 20000Designated the spacing unitLIBERTY RESOURCES LLC
  2. Order 25005Case 22670Established the spacing unitSTATOIL OIL AND GAS LP
  3. Order 25375Case 23042Pooled all interests in the unitSTATOIL OIL & GAS LP
  4. Order 34491Case 31755Designated the spacing unitDEVON ENERGY WILLISTON, L.L.C.

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.