BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

1,920-acre Bakken spacing unit

T155N R102W sections 31, 32, 33

Spacing unit4 wells allowed · order 35950Painted Woods-Bakken

Unit facts

Formation
Bakken
Acres
1,920
Type
Spacing unit
Land described
T155N R102W sections 31, 32, 33
Pool
Painted Woods-Bakken
Zone
Zone X
County
Williams County
Surveyed wells inside
7
Most wells operated by
Devon Energy
Unit id
dsu-7c1f2a4ba06bcb8fafef
Wells allowed by the latest linked order
4
Wells assigned to this unit
4
Pending permits inside
0
Balance under the allowance
-3
First linked order
Sep 20, 2022
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
5.02 two-mile laterals per 1,280 acres
Density drilled so far
4.85 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

MARILYN 31-33 3HMARILYN 31-33 1HMARILYN 31-33 2HMARILYN 31-33 4HWING 4-33 #1HMORTENSON 5-32 1-HJACK ERICKSON 6-31 1-H1 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
MARILYN 31-33 3HDEVON ENERGY WILLISTON, L.L.C.Active (A)15,777 ft100%
MARILYN 31-33 1HDEVON ENERGY WILLISTON, L.L.C.Active (A)15,515 ft100%
MARILYN 31-33 2HDEVON ENERGY WILLISTON, L.L.C.Active (A)15,463 ft100%
MARILYN 31-33 4HDEVON ENERGY WILLISTON, L.L.C.Active (A)14,766 ft100%
WING 4-33 #1HDEVON ENERGY WILLISTON, L.L.C.Inactive (IA)4,970 ft52%
MORTENSON 5-32 1-HDEVON ENERGY WILLISTON, L.L.C.Active (A)4,683 ft51%
JACK ERICKSON 6-31 1-HDEVON ENERGY WILLISTON, L.L.C.Inactive (IA)4,625 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 32055Case 29485Established the spacing unit, 4 wells allowedGRAYSON MILL OPERATING, LLC
  2. Order 32068Case 29498Pooled all interests in the unitGRAYSON MILL 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

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