BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

640-acre Bakken spacing unit

T149N R91W section 9

Spacing unit6 wells allowed · order 35852Heart Butte-Bakken

Unit facts

Formation
Bakken
Acres
640
Type
Spacing unit
Land described
T149N R91W section 9
Pool
Heart Butte-Bakken
Zone
Zone XI
County
Dunn County
Surveyed wells inside
1
Most wells operated by
Devon Energy
Unit id
dsu-bd7f4c76139b8a8e7920
Wells allowed by the latest linked order
6
Wells assigned to this unit
1
Pending permits inside
0
Balance under the allowance
+5
First linked order
Jun 18, 2010
Laterals that still fit (Nov 2026 method)
1 (0.48 two-mile equivalents)
Neighbourhood target density
8.06 two-mile laterals per 1,280 acres
Density drilled so far
1.09 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. 4 more would fit the density but not the spacing rule. 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

EDWARD GOODBIRD 9HD1 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
EDWARD GOODBIRD 9HDDEVON ENERGY WILLISTON, L.L.C.Active (A)5,669 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 14536Case 12284Established the spacing unit, 1 well allowedQUESTAR EXPLORATION AND PRODUCTION CO.
  2. Order 18092Case 15837Established the spacing unit, 4 wells allowedDAKOTA-3 E&P CO., LLC
  3. Order 19405Case 17137Pooled all interests in the unitWPX ENERGY WILLISTON, LLC
  4. Order 32107Case 29537Listed the unit in a pool zone table, 6 wells allowedWPX ENERGY WILLISTON, LLC
  5. Order 32361Case 29754Established the spacing unit, 6 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

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