BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

640-acre Bakken spacing unit

T155N R102W section 21

Spacing unit1 wells allowed · order 14439Squires-Bakken

Unit facts

Formation
Bakken
Acres
640
Type
Spacing unit
Land described
T155N R102W section 21
Pool
Squires-Bakken
Zone
Zone I
County
Williams County
Surveyed wells inside
2
Most wells operated by
Devon Energy
Unit id
dsu-7c4b43f26da4c1a5de63
Wells allowed by the latest linked order
1
Wells assigned to this unit
1
Pending permits inside
0
Balance under the allowance
-1
First linked order
Mar 2, 2010
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
5.73 two-mile laterals per 1,280 acres
Density drilled so far
2.01 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. 4 more would fit the density but not the spacing rule. 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

MONT 02-21HShaffer 155-102-27-22-13H1 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
MONT 02-21HDEVON ENERGY WILLISTON, L.L.C.Active (A)5,441 ft100%
Shaffer 155-102-27-22-13HKRAKEN OPERATING, LLCActive (A)5,133 ft52%

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 14439Case 12185Established the spacing unit, 1 well allowedEOG RESOURCES, INC.
  2. Order 16455Case 14180Pooled all interests in the unitEOG RESOURCES, 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

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