BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T150N R92W sections 17, 20

Spacing unit7 wells allowed · order 35220Van Hook-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T150N R92W sections 17, 20
Pool
Van Hook-Bakken
Zone
Zone II
County
Mountrail County
Surveyed wells inside
9
Most wells operated by
Burlington / Marathon
Unit id
dsu-f44c01ecab4e269958cc
Wells allowed by the latest linked order
7
Wells assigned to this unit
8
Pending permits inside
0
Balance under the allowance
-2
First linked order
Mar 27, 2009
Review note
over_allowance
Laterals that still fit (Nov 2026 method)
1 (0.96 two-mile equivalents)
Neighbourhood target density
9.22 two-mile laterals per 1,280 acres
Density drilled so far
8.35 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. 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

CONKLIN USA 31-17HBIG EAGLE USA 41-17TFHWHEELER USA 21-17TFHSNOW BIRD USA 31-17TFHELK 17-20HELONGORIA USA 21-17HSpencer USA 11-17TFHOLD BEAR USA 11-17HELK USA 11-17H1 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
CONKLIN USA 31-17HMARATHON OIL COMPANYActive (A)10,592 ft100%
BIG EAGLE USA 41-17TFHMARATHON OIL COMPANYActive (A)10,374 ft100%
WHEELER USA 21-17TFHMARATHON OIL COMPANYActive (A)9,982 ft100%
SNOW BIRD USA 31-17TFHMARATHON OIL COMPANYActive (A)9,947 ft100%
ELK 17-20HEDEVON ENERGY WILLISTON, L.L.C.Active (A)9,942 ft98%
LONGORIA USA 21-17HMARATHON OIL COMPANYActive (A)9,779 ft100%
OLD BEAR USA 11-17HMARATHON OIL COMPANYActive (A)9,779 ft100%
Spencer USA 11-17TFHMARATHON OIL COMPANYActive (A)9,779 ft100%
ELK USA 11-17HMARATHON OIL COMPANYActive (A)9,305 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 12906Case 10906Established the spacing unitMARATHON OIL CO.
  2. Order 15446Case 13178Designated the spacing unit, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  3. Order 15642Case 13366Established the spacing unit, 2 wells allowedMARATHON OIL CO.
  4. Order 16265Case 13992Pooled all interests in the unitMARATHON OIL CO.
  5. Order 16851Case 14573Designated the spacing unit, 4 wells allowedSPOTTED HAWK DEVELOPMENT, LLC
  6. Order 17196Case 14946Established the spacing unit, 4 wells allowedMARATHON OIL CO.
  7. Order 18908Case 16639Established the spacing unit, 7 wells allowedMARATHON OIL CO.
  8. Order 18903Case 16634Designated the spacing unit, 7 wells allowedWINDSOR ENERGY GROUP, 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.