BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

1,280-acre Bakken spacing unit

T149N R91W sections 28, 33

Spacing unit8 wells allowed · order 35852Heart Butte-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T149N R91W sections 28, 33
Pool
Heart Butte-Bakken
Zone
Zone XXX
County
Dunn County
Surveyed wells inside
7
Most wells operated by
XTO Energy
DMR case / order on the footprint
11447 /
Unit id
dsu-30870f70d7b34284279c
Wells allowed by the latest linked order
8
Wells assigned to this unit
7
Pending permits inside
0
Balance under the allowance
+1
First linked order
Sep 28, 2009
Laterals that still fit (Nov 2026 method)
2 (1.91 two-mile equivalents)
Neighbourhood target density
8.63 two-mile laterals per 1,280 acres
Density drilled so far
6.77 per 1,280 acres

Room to drill: 2 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

FBIR GRINNELL 34X-33AFBIR GRINNELL 34X-33CFBIR GRINNELL 34X-33EFBIR GRINNELL 34X-33DFBIR GRINNELL 34X-33BFBIR GRINNELL 34X-33GFBIR GRINNELL 34X-33F1 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
FBIR GRINNELL 34X-33AXTO ENERGY INCActive (A)10,599 ft100%
FBIR GRINNELL 34X-33CXTO ENERGY INCActive (A)10,437 ft100%
FBIR GRINNELL 34X-33EXTO ENERGY INCActive (A)10,197 ft100%
FBIR GRINNELL 34X-33DXTO ENERGY INCActive (A)10,067 ft100%
FBIR GRINNELL 34X-33BXTO ENERGY INCActive (A)9,789 ft100%
FBIR GRINNELL 34X-33GXTO ENERGY INCActive (A)9,663 ft100%
FBIR GRINNELL 34X-33FXTO ENERGY INCActive (A)9,460 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 13568Case 11447Established the spacing unitXTO ENERGY INC.
  2. Order 13817Case 11669Designated the spacing unitQUESTAR EXPL. AND PROD. CO.
  3. Order 14375Case 12125Designated the spacing unitKODIAK OIL & GAS (USA) INC.
  4. Order 14494Case 12243Designated the spacing unit, 2 wells allowedPEAK NORTH DAKOTA, LLC
  5. Order 16640Case 14363Designated the spacing unit, 6 wells allowedENERPLUS RESOURCES (U.S.A.) INC.
  6. Order 17367Case 15119Established the spacing unit, 6 wells allowedXTO ENERGY INC.
  7. Order 18817Case 16551Pooled all interests in the unitXTO ENERGY INC.
  8. Order 17625Case 15379Designated the spacing unit, 4 wells allowedQEP ENERGY CO.
  9. Order 18007Case 15752Designated the spacing unit, 6 wells allowedDAKOTA-3 E&P CO., LLC
  10. Order 18717Case 16451Designated the spacing unit, 6 wells allowedENERPLUS RESOURCES (U.S.A.) INC.
  11. Order 18222Case 15960Designated the spacing unit, 8 wells allowedDAKOTA-3 E&P CO., LLC
  12. Order 20494Case 18225Designated the spacing unit, 8 wells allowedKODIAK OIL & GAS (USA) INC.
  13. Order 21676Case 19373Established the spacing unit, 8 wells allowedXTO ENERGY INC.
  14. Order 28823Case 26397Designated the spacing unit, 3 wells allowedWPX ENERGY WILLISTON, LLC
  15. Order 28823Case 26397Listed the unit in a pool zone table, 8 wells allowedWPX ENERGY WILLISTON, LLC
  16. Order 28856Case 26430Designated the spacing unit, 3 wells allowedRIMROCK OIL & GAS WILLISTON LLC
  17. Order 28856Case 26430Listed the unit in a pool zone table, 8 wells allowedRIMROCK OIL & GAS WILLISTON LLC
  18. Order 28984Case 26551Designated the spacing unit, 3 wells allowedRIMROCK OIL & GAS WILLISTON LLC
  19. Order 29000Case 26567Listed the unit in a pool zone table, 8 wells allowedRIMROCK OIL & GAS 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

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