BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T153N R91W sections 26, 27

Spacing unit11 wells allowed · order 35866Sanish-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T153N R91W sections 26, 27
Pool
Sanish-Bakken
Zone
Zone XXIII
County
Mountrail County
Surveyed wells inside
11
Most wells operated by
Chord / Enerplus / Oasis / Whiting
Unit id
dsu-ed1f42d91915c1d39e86
Wells allowed by the latest linked order
11
Wells assigned to this unit
5
Pending permits inside
0
Balance under the allowance
0
First linked order
Aug 28, 2007
Laterals that still fit (Nov 2026 method)
1 (0.95 two-mile equivalents)
Neighbourhood target density
8.43 two-mile laterals per 1,280 acres
Density drilled so far
7.18 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

LIFFRIG 11-27-2HFLADELAND 13-27HLIFFRIG 11-27HMCNAMARA 42-26XHFLADELAND 13-27TFHFLADELAND 14-27HMCNAMARA 42-26-2XHMCNAMARA 42-26HNesheim 11-24HUMCNAMARA 42-26-3XHMCNAMARA 41-26XH1 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
LIFFRIG 11-27-2HWHITING OIL AND GAS CORPORATIONActive (A)10,179 ft100%
FLADELAND 13-27HWHITING OIL AND GAS CORPORATIONActive (A)9,800 ft100%
LIFFRIG 11-27HWHITING OIL AND GAS CORPORATIONActive (A)9,354 ft100%
MCNAMARA 42-26XHWHITING OIL AND GAS CORPORATIONActive (A)8,275 ft85%
FLADELAND 13-27TFHWHITING OIL AND GAS CORPORATIONActive (A)8,269 ft100%
FLADELAND 14-27HWHITING OIL AND GAS CORPORATIONActive (A)7,527 ft100%
MCNAMARA 42-26-2XHWHITING OIL AND GAS CORPORATIONActive (A)6,611 ft70%
MCNAMARA 42-26HWHITING OIL AND GAS CORPORATIONActive (A)5,705 ft58%
Nesheim 11-24HUWHITING OIL AND GAS CORPORATIONActive (A)4,880 ft51%
MCNAMARA 42-26-3XHWHITING OIL AND GAS CORPORATIONActive (A)3,402 ft33%
MCNAMARA 41-26XHWHITING OIL AND GAS CORPORATIONActive (A)1,753 ft17%

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 11295Case 9615Established the spacing unitWHITING OIL & GAS CORP.
  2. Order 11296Case 9616Pooled all interests in the unitWHITING OIL & GAS CORP.
  3. Order 11399Case 9687Designated the spacing unitWHITING OIL & GAS CORP.
  4. Order 13904Case 11743Designated the spacing unit, 4 wells allowedWHITING OIL & GAS CORP.
  5. Order 15653Case 13377Established the spacing unit, 6 wells allowedWHITING OIL & GAS CORP.
  6. Order 23196Case 20890Designated the spacing unit, 6 wells allowedMUREX PETROLEUM CORP.
  7. Order 22284Case 19977Designated the spacing unit, 8 wells allowedFIDELITY EXPLORATION & PRODUCTION CO.
  8. Order 22284Case 19977Listed the unit in a pool zone table, 6 wells allowedFIDELITY EXPLORATION & PRODUCTION CO.
  9. Order 22761Case 20455Designated the spacing unit, 8 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  10. Order 23316Case 21010Designated the spacing unit, 8 wells allowedSLAWSON EXPLORATION CO., INC.
  11. Order 23552Case 21248Designated the spacing unit, 6 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  12. Order 22755Case 20449Established the spacing unit, 11 wells allowedWHITING OIL AND GAS CORP.
  13. Order 24404Case 22070Designated the spacing unit, 11 wells allowedOASIS PETROLEUM NORTH AMERICA LLC
  14. Order 31505Case 28954Designated the spacing unitWHITING OIL AND GAS CORP.

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

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