BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

3,840-acre Bakken spacing unit

T151N R92W section 36

Spacing unitBig Bend-Bakken

Unit facts

Formation
Bakken
Acres
3,840
Type
Spacing unit
Land described
T151N R92W section 36
Pool
Big Bend-Bakken
Zone
Zone LI
County
Mountrail County
Surveyed wells inside
24
Most wells operated by
DEVON ENERGY WILLISTON, L.L.C.
Unit id
dsu-17b2e42abc7e4b68e446
Laterals that still fit (Nov 2026 method)
1 (1.43 two-mile equivalents)
Neighbourhood target density
8.51 two-mile laterals per 1,280 acres
Density drilled so far
7.38 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

SERPENT FEDERAL 8-36-32HSERPENT FEDERAL 3-36-32HSERPENT FEDERAL 7-36-32TFHSERPENT (FEDERAL) 4 SLTFHSERPENT FEDERAL 5-36-32TFHSERPENT FEDERAL 6-36-32TFHSERPENT FEDERAL 1-36-31HPETERSON 6-5-4 HDNORTH SEGMENT 6-5-4 HWPETERSON 6-5-4 HQPETERSON 6-5-4 HCNORTH SEGMENT 6-5-4 HBNORTH SEGMENT 6-5-4 HYSERPENT FEDERAL 2-36-31HNORTH SEGMENT 6-5-4 HASERPENT (FEDERAL) 4-36-31TFHOLSON 12-1HDOLSON 12-1HYOLSON 1-12HWOLSON 12-1HCOLSON 12-1HXOLSON 1-12HPETERSON 6-5-4 HZLOSPREY FEDERAL 2 SLH1 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
SERPENT FEDERAL 8-36-32HSLAWSON EXPLORATION COMPANY, INC.Active (A)16,071 ft100%
SERPENT FEDERAL 3-36-32HSLAWSON EXPLORATION COMPANY, INC.Active (A)15,199 ft100%
SERPENT FEDERAL 7-36-32TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)15,166 ft100%
SERPENT (FEDERAL) 4 SLTFHSLAWSON EXPLORATION COMPANY, INC.Active (A)15,149 ft100%
SERPENT FEDERAL 5-36-32TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)15,116 ft100%
SERPENT FEDERAL 6-36-32TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)14,962 ft100%
SERPENT FEDERAL 1-36-31HSLAWSON EXPLORATION COMPANY, INC.Active (A)10,768 ft100%
PETERSON 6-5-4 HDDEVON ENERGY WILLISTON, L.L.C.Active (A)10,207 ft67%
NORTH SEGMENT 6-5-4 HWDEVON ENERGY WILLISTON, L.L.C.Active (A)10,168 ft67%
PETERSON 6-5-4 HQDEVON ENERGY WILLISTON, L.L.C.Active (A)10,138 ft67%
PETERSON 6-5-4 HCDEVON ENERGY WILLISTON, L.L.C.Active (A)10,135 ft67%
NORTH SEGMENT 6-5-4 HBDEVON ENERGY WILLISTON, L.L.C.Active (A)10,127 ft68%
NORTH SEGMENT 6-5-4 HYDEVON ENERGY WILLISTON, L.L.C.Active (A)10,125 ft67%
SERPENT FEDERAL 2-36-31HSLAWSON EXPLORATION COMPANY, INC.Active (A)10,096 ft100%
NORTH SEGMENT 6-5-4 HADEVON ENERGY WILLISTON, L.L.C.Active (A)10,095 ft59%
SERPENT (FEDERAL) 4-36-31TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)9,847 ft100%
OLSON 12-1HDDEVON ENERGY WILLISTON, L.L.C.Active (A)5,067 ft52%
OLSON 12-1HYDEVON ENERGY WILLISTON, L.L.C.Active (A)5,062 ft50%
OLSON 1-12HWDEVON ENERGY WILLISTON, L.L.C.Active (A)5,060 ft50%
OLSON 12-1HCDEVON ENERGY WILLISTON, L.L.C.Active (A)5,057 ft50%
OLSON 12-1HXDEVON ENERGY WILLISTON, L.L.C.Active (A)5,013 ft50%
OLSON 1-12HDEVON ENERGY WILLISTON, L.L.C.Active (A)4,522 ft52%
PETERSON 6-5-4 HZLDEVON ENERGY WILLISTON, L.L.C.Active (A)4,145 ft27%
OSPREY FEDERAL 2 SLHSLAWSON EXPLORATION COMPANY, INC.Active (A)3,836 ft27%

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 28092Case 25682Established the spacing unitSLAWSON EXPLORATION CO., INC.
  2. Order 28250Case 25834Designated the spacing unitSLAWSON EXPLORATION CO., INC.
  3. Order 28782Case 26364Pooled all interests in the unitSLAWSON EXPLORATION CO., INC.
  4. Order 34203Case 31482Designated the spacing unitSLAWSON EXPLORATION COMPANY, 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

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