BBakken SubsurfaceNorth Dakota well index

Spacing unit · Mountrail County

1,280-acre Bakken spacing unit

T151N R92W sections 20, 21

Spacing unit3 wells allowed · order 34203Big Bend-Bakken

Unit facts

Formation
Bakken
Acres
1,280
Type
Spacing unit
Land described
T151N R92W sections 20, 21
Pool
Big Bend-Bakken
Zone
Zone XX
County
Mountrail County
Surveyed wells inside
15
Most wells operated by
Slawson
Unit id
dsu-67880d1a4b2342128bd2
Wells allowed by the latest linked order
3
Wells assigned to this unit
1
Pending permits inside
0
Balance under the allowance
-12
First linked order
Dec 12, 2013
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
9.18 two-mile laterals per 1,280 acres
Density drilled so far
7.67 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

Switchback 4-21UTFHSwitchback 5-21UTFHMOLE 6-20TFHMOLE 3-20HMOLE 5-20TFHMOLE 4-20TFHMOLE 7-20TFHMOLE 2-20HDIAMONDBACK 1 SLHDIAMONDBACK 3-21HMOLE 1-20HDIAMONDBACK 2-21HDIAMONDBACK 1-21HMOLE 1 SLHMUSTANG 1 SLH1 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
Switchback 4-21UTFHSLAWSON EXPLORATION COMPANY, INC.Active (A)10,840 ft100%
Switchback 5-21UTFHSLAWSON EXPLORATION COMPANY, INC.Active (A)9,954 ft100%
MOLE 6-20TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)5,211 ft100%
MOLE 3-20HSLAWSON EXPLORATION COMPANY, INC.Active (A)5,190 ft100%
MOLE 5-20TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)5,071 ft100%
MOLE 4-20TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)5,029 ft100%
MOLE 7-20TFHSLAWSON EXPLORATION COMPANY, INC.Active (A)5,021 ft100%
MOLE 2-20HSLAWSON EXPLORATION COMPANY, INC.Active (A)4,955 ft100%
DIAMONDBACK 1 SLHSLAWSON EXPLORATION COMPANY, INC.Active (A)4,856 ft100%
DIAMONDBACK 3-21HSLAWSON EXPLORATION COMPANY, INC.Active (A)4,848 ft100%
MOLE 1-20HSLAWSON EXPLORATION COMPANY, INC.Active (A)4,601 ft100%
DIAMONDBACK 2-21HSLAWSON EXPLORATION COMPANY, INC.Active (A)4,411 ft100%
DIAMONDBACK 1-21HSLAWSON EXPLORATION COMPANY, INC.Active (A)4,398 ft100%
MOLE 1 SLHSLAWSON EXPLORATION COMPANY, INC.Active (A)3,772 ft79%
MUSTANG 1 SLHSLAWSON EXPLORATION COMPANY, INC.Active (A)2,580 ft51%

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 21993Case 19687Designated the spacing unit, 4 wells allowedSLAWSON EXPLORATION CO., INC.
  2. Order 22417Case 20112Established the spacing unit, 4 wells allowedSLAWSON EXPLORATION CO., INC.
  3. Order 24511Case 22177Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  4. Order 24511Case 22177Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  5. Order 24512Case 22178Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  6. Order 24512Case 22178Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  7. Order 24606Case 22272Established the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  8. Order 24606Case 22272Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  9. Order 24704Case 22369Designated the spacing unitSLAWSON EXPLORATION CO., INC.
  10. Order 24704Case 22369Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  11. Order 24704Case 22369Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  12. Order 24705Case 22370Established the spacing unitSLAWSON EXPLORATION CO., INC.
  13. Order 24705Case 22370Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  14. Order 24705Case 22370Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  15. Order 25185Case 22854Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  16. Order 25185Case 22854Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  17. Order 25483Case 23152Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  18. Order 25483Case 23152Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  19. Order 25584Case 23241Designated the spacing unit, 7 wells allowedMARATHON OIL CO.
  20. Order 25584Case 23241Listed the unit in a pool zone table, 2 wells allowedMARATHON OIL CO.
  21. Order 25803Case 23463Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  22. Order 25803Case 23463Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  23. Order 26421Case 24078Designated the spacing unit, 7 wells allowedMARATHON OIL CO.
  24. Order 26421Case 24078Listed the unit in a pool zone table, 2 wells allowedMARATHON OIL CO.
  25. Order 27378Case 24986Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  26. Order 27378Case 24986Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  27. Order 27841Case 25438Designated the spacing unit, 7 wells allowedSLAWSON EXPLORATION CO., INC.
  28. Order 27841Case 25438Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  29. Order 28092Case 25682Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  30. Order 28092Case 25682Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  31. Order 28250Case 25834Established the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  32. Order 28250Case 25834Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  33. Order 28393Case 25980Designated the spacing unit, 3 wells allowedEOG RESOURCES, INC.
  34. Order 28393Case 25980Listed the unit in a pool zone table, 2 wells allowedEOG RESOURCES, INC.
  35. Order 28626Case 26210Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  36. Order 28626Case 26210Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  37. Order 28983Case 26550Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  38. Order 28983Case 26550Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  39. Order 29082Case 26648Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  40. Order 29082Case 26648Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  41. Order 29190Case 26754Listed the unit in a pool zone table, 3 wells allowedWHITING OIL AND GAS CORP.
  42. Order 29191Case 26755Listed the unit in a pool zone table, 2 wells allowedWHITING OIL AND GAS CORP.
  43. Order 29191Case 26755Listed the unit in a pool zone table, 3 wells allowedWHITING OIL AND GAS CORP.
  44. Order 29192Case 26756Listed the unit in a pool zone table, 2 wells allowedWHITING OIL AND GAS CORP.
  45. Order 29192Case 26756Listed the unit in a pool zone table, 3 wells allowedWHITING OIL AND GAS CORP.
  46. Order 29530Case 27084Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  47. Order 29530Case 27084Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  48. Order 29877Case 27433Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  49. Order 29877Case 27433Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  50. Order 29950Case 27506Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  51. Order 29950Case 27506Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  52. Order 29999Case 27555Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  53. Order 29999Case 27555Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  54. Order 30066Case 27622Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  55. Order 30066Case 27622Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  56. Order 30067Case 27623Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  57. Order 30067Case 27623Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  58. Order 30405Case 27953Pooled all interests in the unitSLAWSON EXPLORATION CO., INC.
  59. Order 30408Case 27956Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  60. Order 30408Case 27956Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  61. Order 30620Case 28164Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  62. Order 30620Case 28164Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  63. Order 30384Case 27932Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  64. Order 30384Case 27932Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  65. Order 30828Case 28370Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  66. Order 30828Case 28370Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  67. Order 30829Case 28371Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  68. Order 30829Case 28371Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  69. Order 30830Case 28372Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  70. Order 30830Case 28372Listed the unit in a pool zone table, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  71. Order 31117Case 28574Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  72. Order 31382Case 28832Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  73. Order 31382Case 28832Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  74. Order 31432Case 28886Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  75. Order 31432Case 28886Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  76. Order 31516Case 28965Designated the spacing unit, 3 wells allowedWPX ENERGY WILLISTON, LLC
  77. Order 31516Case 28965Listed the unit in a pool zone table, 2 wells allowedWPX ENERGY WILLISTON, LLC
  78. Order 31540Case 28989Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  79. Order 31540Case 28989Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  80. Order 31541Case 28990Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  81. Order 31541Case 28990Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  82. Order 31542Case 28991Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  83. Order 31542Case 28991Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  84. Order 31937Case 29367Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  85. Order 31937Case 29367Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  86. Order 32006Case 29435Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO. INC.
  87. Order 32006Case 29435Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO. INC.
  88. Order 32177Case 29605Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  89. Order 32177Case 29605Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  90. Order 33202Case 30589Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  91. Order 33202Case 30589Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  92. Order 33303Case 30652Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION CO., INC.
  93. Order 33303Case 30652Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION CO., INC.
  94. Order 34203Case 31482Designated the spacing unitSLAWSON EXPLORATION COMPANY, INC.
  95. Order 34203Case 31482Designated the spacing unit, 3 wells allowedSLAWSON EXPLORATION COMPANY, INC.
  96. Order 34203Case 31482Listed the unit in a pool zone table, 2 wells allowedSLAWSON EXPLORATION COMPANY, 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

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