BBakken SubsurfaceNorth Dakota well index

Spacing unit · Dunn County

640-acre Bakken spacing unit

T149N R91W section 34

Spacing unit7 wells allowed · order 35852Heart Butte-Bakken

Unit facts

Formation
Bakken
Acres
640
Type
Spacing unit
Land described
T149N R91W section 34
Pool
Heart Butte-Bakken
Zone
Zone XII
County
Dunn County
Surveyed wells inside
7
Most wells operated by
XTO Energy
Unit id
dsu-4f7f966de6a1189bae8b
Wells allowed by the latest linked order
7
Wells assigned to this unit
0
Pending permits inside
0
Balance under the allowance
0
First linked order
Nov 24, 2010
Laterals that still fit (Nov 2026 method)
0
Neighbourhood target density
7.7 two-mile laterals per 1,280 acres
Density drilled so far
6.98 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. 1 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

FBIR REESE 43X-33DFBIR REESE 43X-33AFBIR REESE 43X-33EFBIR REESE 43X-33CFBIR REESE 43X-33GFBIR REESE 43X-33BFBIR REESE 43X-33F1 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
FBIR REESE 43X-33DXTO ENERGY INCActive (A)5,504 ft94%
FBIR REESE 43X-33AXTO ENERGY INCActive (A)5,385 ft94%
FBIR REESE 43X-33EXTO ENERGY INCActive (A)5,231 ft95%
FBIR REESE 43X-33CXTO ENERGY INCActive (A)5,221 ft98%
FBIR REESE 43X-33GXTO ENERGY INCActive (A)5,184 ft93%
FBIR REESE 43X-33BXTO ENERGY INCActive (A)5,159 ft99%
FBIR REESE 43X-33FXTO ENERGY INCActive (A)5,144 ft96%

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 15508Case 13235Established the spacing unit, 2 wells allowedQEP ENERGY CO.
  2. Order 23891Case 21549Established the spacing unit, 7 wells allowedXTO ENERGY INC.
  3. Order 26163Case 23822Pooled all interests in the unitXTO ENERGY 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

One other unit shares a surveyed well with this one; overlapping units are not additive.