BBakken SubsurfaceNorth Dakota well index

Spacing unit · Williams County

640-acre Bakken spacing unit

T155N R100W section 11

Spacing unitStony Creek-Bakken

Unit facts

Formation
Bakken
Acres
640
Type
Spacing unit
Land described
T155N R100W section 11
Pool
Stony Creek-Bakken
Zone
Zone I
County
Williams County
Surveyed wells inside
6
Most wells operated by
Zavanna Energy Operating, LLC
Unit id
dsu-fc96207f9c81bd7e2492
Laterals that still fit (Nov 2026 method)
1 (0.48 two-mile equivalents)
Neighbourhood target density
8.14 two-mile laterals per 1,280 acres
Density drilled so far
4.32 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. 2 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

WILDCAT 1-11HMastiff 22-11 4H XESHEPHERD 3-11 1HSHEPHERD 3-11 2TFHSHEPHERD 3-11 3HSHEPHERD 3-11 4TFH1 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
WILDCAT 1-11HZavanna Energy Operating, LLCActive (A)5,980 ft100%
Mastiff 22-11 4H XEZavanna Energy Operating, LLCActive (A)5,143 ft50%
SHEPHERD 3-11 1HZavanna Energy Operating, LLCActive (A)4,733 ft41%
SHEPHERD 3-11 2TFHZavanna Energy Operating, LLCActive (A)3,300 ft31%
SHEPHERD 3-11 3HZavanna Energy Operating, LLCActive (A)2,238 ft25%
SHEPHERD 3-11 4TFHZavanna Energy Operating, LLCActive (A)1,007 ft13%

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 19364Case 17096Pooled all interests in the unitZAVANNA, 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

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