BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

1,280-acre Bakken spacing unit

T149N R91W sections 22, 27

Spacing unit14 wells allowed · order 35852Heart Butte-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T149N R91W sections 22, 27
Pool
Heart Butte-Bakken
Zone
Zone XXXVIII
County
Dunn County
Surveyed wells inside
1
Most wells operated by
Devon Energy
Unit id
dsu-26fc524f50949352ce22
Wells allowed by the latest linked order
14
Wells assigned to this unit
1
Pending permits inside
0
Balance under the allowance
+13
First linked order
Jun 18, 2010
Laterals that still fit (Nov 2026 method)
7 (6.69 two-mile equivalents)
Neighbourhood target density
7.62 two-mile laterals per 1,280 acres
Density drilled so far
1.13 per 1,280 acres

Room to drill: 7 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

SARAH YELLOW WOLF 22-27HC1 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
SARAH YELLOW WOLF 22-27HCDEVON ENERGY WILLISTON, L.L.C.Active (A)11,910 ft100%

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 14494Case 12243Designated the spacing unit, 2 wells allowedPEAK NORTH DAKOTA, LLC
  2. Order 14689Case 12433Established the spacing unit, 2 wells allowedXTO ENERGY INC.
  3. Order 17625Case 15379Listed the unit in a pool zone table, 7 wells allowedQEP ENERGY CO.
  4. Order 18092Case 15837Established the spacing unit, 7 wells allowedDAKOTA-3 E&P CO., LLC
  5. Order 19406Case 17138Pooled all interests in the unitWPX ENERGY WILLISTON, LLC
  6. Order 23891Case 21549Designated the spacing unit, 14 wells allowedXTO ENERGY INC.
  7. Order 24021Case 21667Established the spacing unit, 14 wells allowedWPX ENERGY WILLISTON, 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

One other unit shares a surveyed well with this one; overlapping units are not additive.