BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,600-acre Bakken spacing unit

T151N R92W sections 10, 11, 12

Spacing unit6 wells allowed · order 34203Big Bend-Bakken

Unit facts

Formation
Bakken
Acres
1,600
Type
Spacing unit
Land described
T151N R92W sections 10, 11, 12
Pool
Big Bend-Bakken
Zone
Zone XXXIV
County
Mountrail County
Surveyed wells inside
10
Most wells operated by
Slawson
Unit id
dsu-cc26ce8042532efedf6d
Wells allowed by the latest linked order
6
Wells assigned to this unit
7
Pending permits inside
0
Balance under the allowance
-4
First linked order
Sep 2, 2009
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
8.55 two-mile laterals per 1,280 acres
Density drilled so far
9.59 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

PERISCOPE FEDERAL 8-10-11-12HPERISCOPE FEDERAL 4 SLHPERISCOPE FEDERAL 5-10-7TFHPERISCOPE FEDERAL 4-10-7TFHPERISCOPE FEDERAL 9-10-7TFHPERISCOPE FEDERAL 6-10-11-12TFHPERISCOPE FEDERAL 2-10-11-12HPERISCOPE FEDERAL 3-10-11-12HPERISCOPE FEDERAL 1-10-11-12HPERISCOPE FEDERAL 7-10-11-12TFH1 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
PERISCOPE FEDERAL 8-10-11-12HSLAWSON EXPLORATION COMPANY, INC.Active (A)13,774 ft100%
PERISCOPE FEDERAL 4 SLHSLAWSON EXPLORATION COMPANY, INC.Active (A)12,863 ft99%
PERISCOPE FEDERAL 5-10-7TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)12,776 ft72%
PERISCOPE FEDERAL 4-10-7TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)12,769 ft72%
PERISCOPE FEDERAL 9-10-7TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)12,709 ft72%
PERISCOPE FEDERAL 6-10-11-12TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)12,705 ft100%
PERISCOPE FEDERAL 2-10-11-12HSLAWSON EXPLORATION COMPANY, INC.Active (A)12,551 ft100%
PERISCOPE FEDERAL 3-10-11-12HSLAWSON EXPLORATION COMPANY, INC.Active (A)12,515 ft100%
PERISCOPE FEDERAL 1-10-11-12HSLAWSON EXPLORATION COMPANY, INC.Active (A)12,339 ft100%
PERISCOPE FEDERAL 7-10-11-12TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)12,315 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 13558Case 11439Designated the spacing unit
  2. Order 13496Case 11392Designated the spacing unitQUESTAR EXPL. AND PROD. CO.
  3. Order 14127Case 11939Designated the spacing unit, 2 wells allowedEOG RESOURCES, INC.
  4. Order 15085Case 12822Pooled all interests in the unitSLAWSON EXPLORATION CO., INC.
  5. Order 16851Case 14573Designated the spacing unit, 6 wells allowedSPOTTED HAWK DEVELOPMENT, LLC
  6. Order 16860Case 14582Established the spacing unit, 6 wells allowedSLAWSON EXPLORATION CO., INC.
  7. Order 22209Case 19902Designated the spacing unit, 6 wells allowedWPX ENERGY WILLISTON, LLC
  8. Order 22702Case 20395Designated the spacing unit, 6 wells allowedEOG RESOURCES, INC.
  9. Order 21993Case 19687Established the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  10. Order 22417Case 20112Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  11. Order 23316Case 21010Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  12. Order 24511Case 22177Designated the spacing unit, 10 wells allowedSLAWSON EXPLORATION CO., INC.
  13. Order 24606Case 22272Established the spacing unit, 10 wells allowedSLAWSON EXPLORATION CO., INC.
  14. Order 29877Case 27433Designated the spacing unit, 6 wells allowedSLAWSON EXPLORATION CO., INC.
  15. Order 29999Case 27555Established the spacing unit, 6 wells allowedSLAWSON EXPLORATION CO., 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

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