BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T156N R92W sections 20, 21

Spacing unit21 wells allowed · order 35988Alger-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T156N R92W sections 20, 21
Pool
Alger-Bakken
Zone
Zone XX
County
Mountrail County
Surveyed wells inside
12
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-f95dc190d5bc89e9591e
Wells allowed by the latest linked order
21
Wells assigned to this unit
6
Pending permits inside
0
Balance under the allowance
+9
First linked order
Mar 10, 2010
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.63 two-mile laterals per 1,280 acres
Density drilled so far
11.66 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

MALLARD 5692 31-22 5TMALLARD 5692 21-20 #10BMALLARD 5692 31-22 11T2MALLARD 5692 31-22 8BMALLARD 5692 31-22 7TMALLARD 5692 31-22 12T2MALLARD 5692 31-22 6BMALLARD 5692 21-20 #9T2MALLARD 5692 21-20 #4TMALLARD 5692 21-20 #3BMALLARD 5692 21-20 #2TMALLARD 5692 21-20H1 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
MALLARD 5692 31-22 5TOASIS PETROLEUM NORTH AMERICA LLCActive (A)12,173 ft97%
MALLARD 5692 21-20 #10BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,732 ft100%
MALLARD 5692 31-22 11T2OASIS PETROLEUM NORTH AMERICA LLCPlugged and abandoned (PA)10,545 ft95%
MALLARD 5692 31-22 8BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,412 ft95%
MALLARD 5692 31-22 7TOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,340 ft97%
MALLARD 5692 31-22 12T2OASIS PETROLEUM NORTH AMERICA LLCActive (A)10,314 ft95%
MALLARD 5692 31-22 6BOASIS PETROLEUM NORTH AMERICA LLCActive (A)10,301 ft95%
MALLARD 5692 21-20 #9T2OASIS PETROLEUM NORTH AMERICA LLCActive (A)9,933 ft100%
MALLARD 5692 21-20 #4TOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,798 ft100%
MALLARD 5692 21-20 #3BOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,700 ft100%
MALLARD 5692 21-20 #2TOASIS PETROLEUM NORTH AMERICA LLCPlugged and abandoned (PA)9,687 ft100%
MALLARD 5692 21-20HOASIS PETROLEUM NORTH AMERICA LLCActive (A)9,422 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 14350Case 12100Established the spacing unit, 1 well allowedOASIS PETROLEUM NORTH AMERICA LLC
  2. Order 14350Case 12100Designated the spacing unitOASIS PETROLEUM NORTH AMERICA LLC
  3. Order 18506Case 16240Designated the spacing unitEOG RESOURCES, INC.
  4. Order 18989Case 16720Pooled all interests in the unitOASIS PETROLEUM NORTH AMERICA LLC
  5. Order 19146Case 16878Designated the spacing unit, 6 wells allowedHESS CORP.
  6. Order 19671Case 17402Established the spacing unit, 6 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  7. Order 22282Case 19975Designated the spacing unit, 12 wells allowedFIDELITY EXPLORATION & PRODUCTION CO.
  8. Order 22758Case 20452Established the spacing unit, 12 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  9. Order 23546Case 21242Established the spacing unit, 21 wells allowedOASIS PETROLEUM NORTH AMERICA 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.