BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

2,560-acre Bakken spacing unit

T155N R95W sections 23, 24, 25, 26

Spacing unit2 wells allowed · order 32884Capa-Bakken

Unit facts

Formation
Bakken
Acres
2,560
Type
Spacing unit
Land described
T155N R95W sections 23, 24, 25, 26
Pool
Capa-Bakken
Zone
Zone XI
County
Williams County
Surveyed wells inside
15
Most wells operated by
XTO Energy
Unit id
dsu-e1496447dad48e5d1419
Wells allowed by the latest linked order
2
Wells assigned to this unit
0
Pending permits inside
0
Balance under the allowance
-13
First linked order
Aug 14, 2015
Laterals that still fit (Nov 2026 method)
1 (0.95 two-mile equivalents)
Neighbourhood target density
9.92 two-mile laterals per 1,280 acres
Density drilled so far
7.08 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

MARILYN 21X-23AALLIE 31X-24BALLIE 31X-24AMARILYN 21X-23DMARILYN 21X-23GMARILYN 21X-23CMARILYN 21X-23HALLIE 31X-24FALLIE 31X-24EXHALLIE 31X-24DMARILYN 21X-23ALLIE 31X-24HTUBIE 21X-23ALLIE 31X-24CALLIE 31X-241 mi

DMR footprint (NAD83) with the published surface locations of its wells. Laterals run under the unit; pads often sit on a neighbouring section.

Wells inside the unit

WellOperatorStatusLateral inside
MARILYN 21X-23AXTO ENERGY INCActive (A)10,305 ft100%
ALLIE 31X-24BXTO ENERGY INCActive (A)10,291 ft100%
ALLIE 31X-24AXTO ENERGY INCActive (A)10,284 ft100%
MARILYN 21X-23DXTO ENERGY INCActive (A)10,230 ft100%
MARILYN 21X-23GXTO ENERGY INCActive (A)10,229 ft100%
MARILYN 21X-23CXTO ENERGY INCActive (A)10,206 ft100%
MARILYN 21X-23HXTO ENERGY INCActive (A)10,174 ft100%
ALLIE 31X-24FXTO ENERGY INCActive (A)10,089 ft100%
ALLIE 31X-24EXHXTO ENERGY INCActive (A)10,056 ft100%
ALLIE 31X-24DXTO ENERGY INCActive (A)9,797 ft100%
MARILYN 21X-23XTO ENERGY INCActive (A)9,750 ft100%
ALLIE 31X-24HXTO ENERGY INCActive (A)9,715 ft100%
TUBIE 21X-23XTO ENERGY INCActive (A)9,480 ft100%
ALLIE 31X-24CXTO ENERGY INCActive (A)9,383 ft100%
ALLIE 31X-24XTO ENERGY INCActive (A)9,367 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 26286Case 23943Designated the spacing unit, 2 wells allowedXTO ENERGY INC.
  2. Order 26564Case 24199Established the spacing unit, 2 wells allowedXTO ENERGY INC.
  3. Order 30082Case 27638Pooled all interests in the unitXTO HOLDINGS, 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

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