← Wells

42-461-43570

Horizontal

BROOK UNIT N-12L

UPTON County · District 9 · PIONEER NATURAL RES. USA, INC.

Permits

1

Max Depth

8,625 ft

First Permit

2026-03-24

Latest Activity

2026-03-24

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Formation Tops (10) Elevation 2,775 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 2,417 ft+358 ft
GRAYBURG 4,042 ft-1,267 ft
SAN ANDRES - SALTWATER FLOW (San Andres)4,257 ft-1,482 ft
CLEARFORK (Clear Fork)6,321 ft-3,546 ft
SPRABERRY 7,189 ft-4,414 ft
DEVONIAN ——
ELLENBURGER ——
FUSSELMAN ——
STRAWN ——
WOLFCAMP ——

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section
✓ 42-461-43562 BROOK N-12O · PIONEER NATURAL RES. USA, INC.
0.2 mi
Yates 2,448'Grayburg 4,050'San Andres 4,255'Clear Fork 6,327'Spraberry 7,220'Wolfcamp 8,785'Fusselman —Devonian —Strawn —Ellenburger —
✓ 42-461-43555 BROOK N-12F · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,417'Grayburg 3,998'San Andres 4,240'Clear Fork 6,301'Spraberry 7,168'Wolfcamp 8,737'Fusselman —Ellenburger —Devonian —Strawn —
✓ 42-461-43554 BROOK N-12E · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,418'Grayburg 4,010'San Andres 4,232'Clear Fork 6,306'Spraberry 7,167'Wolfcamp 8,731'Devonian —Ellenburger —Fusselman —Strawn —
✓ 42-461-43553 BROOK N-12D · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,419'Grayburg 4,015'San Andres 4,238'Clear Fork 6,309'Spraberry 7,155'Wolfcamp 8,731'Strawn —Devonian —Ellenburger —Fusselman —
✓ 42-461-43552 BROOK N-12C · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,417'Grayburg 4,017'San Andres 4,245'Clear Fork 6,311'Spraberry 7,164'Wolfcamp 8,740'Strawn —Fusselman —Devonian —Ellenburger —
✓ 42-461-43551 BROOK N-12B · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,409'Grayburg 4,023'San Andres 4,242'Clear Fork 6,308'Spraberry 7,155'Wolfcamp 8,731'Devonian —Fusselman —Ellenburger —Strawn —
✓ 42-461-43550 BROOK N-12A · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,414'Grayburg 4,038'San Andres 4,252'Clear Fork 6,316'Spraberry 7,167'Wolfcamp 8,738'Strawn —Fusselman —Ellenburger —Devonian —
✓ 42-461-41139 PEMBROOK UNIT · PIONEER NATURAL RES. USA, INC.
0.6 mi
Yates 2,414'Grayburg 4,130'San Andres 4,248'Spraberry 7,186'Dean 8,602'Fusselman —Wolfcamp —Ellenburger —Dean —Devonian —Strawn —

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Casing (3)

SizeSet DepthCement
13.375"1,347 ft1,640 sx
9.625"5,580 ft1,450 sx
5.5"23,435 ft1,370 sx

Permit History (1)

#914141 Drill

BROOK UNIT N-12L · 8,625 ft

2026-03-24

Applications (1)

#914141 A PIONEER NATURAL RES. USA, INC.
received 2026-03-13

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2026-08-07 log on file
Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.

Google Maps → Explorer Map →
Lat 31.500525
Lon -101.892577

Well Details

Well Number
12H
Max Depth
8,625 ft
Drill Type
Horizontal
County
UPTON
District
9
Operator
PIONEER NATURAL RES. USA, INC.

Operator

Location
Y SPRING
P-5 Status
Active (filed 2025-08-01)
Cum Oil (all leases)
1,771,882,421 bbl
Cum Gas (all leases)
1,763,727,021 mcf
Activities
CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits
15,468