BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

2,560-acre Bakken spacing unit

T155N R100W sections 17, 18, 19, 20

Spacing unitCow Creek-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T155N R100W sections 17, 18, 19, 20
Pool
Cow Creek-Bakken
Zone
Zone IV
County
Williams County
Surveyed wells inside
12
Most wells operated by
DEVON ENERGY WILLISTON, L.L.C.
Unit id
dsu-33140c346c92f0664e7e
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.51 two-mile laterals per 1,280 acres
Density drilled so far
5.87 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

TUFTO 6-7-18-19F 3HTUFTO 6-7-18-19F 4TFHTUFTO 6-7-18-19F 5HTUFTO 6-7-18-19F 1HLEOPARD 20-18 4TFH XWBLUE HEELER 20-17 1TFHLEOPARD 20-17 3HLEOPARD 20-17 2TFHBLUE HEELER 20-17 2H XEA. TUFTO 18-19 1-HLEOPARD 20-17 1HTUFTO 6-7-18-19F 2TFH1 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
TUFTO 6-7-18-19F 3HDEVON ENERGY WILLISTON, L.L.C.Drilling (DRL)11,234 ft52%
TUFTO 6-7-18-19F 4TFHDEVON ENERGY WILLISTON, L.L.C.Drilling (DRL)10,633 ft50%
TUFTO 6-7-18-19F 5HDEVON ENERGY WILLISTON, L.L.C.Drilling (DRL)10,412 ft50%
TUFTO 6-7-18-19F 1HDEVON ENERGY WILLISTON, L.L.C.Drilling (DRL)10,408 ft50%
LEOPARD 20-18 4TFH XWZavanna Energy Operating, LLCActive (A)10,380 ft100%
BLUE HEELER 20-17 1TFHZavanna Energy Operating, LLCActive (A)10,297 ft100%
LEOPARD 20-17 3HZavanna Energy Operating, LLCActive (A)10,133 ft100%
LEOPARD 20-17 2TFHZavanna Energy Operating, LLCActive (A)10,131 ft100%
BLUE HEELER 20-17 2H XEZavanna Energy Operating, LLCActive (A)10,109 ft100%
A. TUFTO 18-19 1-HDEVON ENERGY WILLISTON, L.L.C.Active (A)9,967 ft100%
LEOPARD 20-17 1HZavanna Energy Operating, LLCActive (A)9,340 ft100%
TUFTO 6-7-18-19F 2TFHDEVON ENERGY WILLISTON, L.L.C.Drilling (DRL)9,253 ft47%

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 28158Case 25747Extended the spacing unitSTATOIL OIL AND GAS LP
  2. Order 28323Case 25908Pooled all interests in the unitSTATOIL OIL & GAS LP
  3. 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

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