42-461-43551

Horizontal

BROOK N-12B

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

Permits

1

Max Depth

10,714 ft

First Permit

2026-03-12

Latest Activity

2026-03-12

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

Shut-In

Plugged

Formation Tops (10) Elevation 2,754 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 2,409 ft+345 ft
GRAYBURG 4,023 ft-1,269 ft
SAN ANDRES - SALTWATER FLOW (San Andres)4,242 ft-1,488 ft
CLEARFORK (Clear Fork)6,308 ft-3,554 ft
SPRABERRY 7,155 ft-4,401 ft
WOLFCAMP 8,731 ft-5,977 ft
DEVONIAN
ELLENBURGER
FUSSELMAN
STRAWN

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
42-461-43550 BROOK N-12A · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,414'Grayburg 4,038'San Andres 4,252'Clear Fork 6,316'Spraberry 7,167'Wolfcamp 8,738'Ellenburger Devonian Strawn Fusselman
42-461-43552 BROOK N-12C · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,417'Grayburg 4,017'San Andres 4,245'Clear Fork 6,311'Spraberry 7,164'Wolfcamp 8,740'Fusselman Ellenburger Devonian Strawn
42-461-43553 BROOK N-12D · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,419'Grayburg 4,015'San Andres 4,238'Clear Fork 6,309'Spraberry 7,155'Wolfcamp 8,731'Fusselman Ellenburger Devonian Strawn
42-461-43554 BROOK N-12E · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,418'Grayburg 4,010'San Andres 4,232'Clear Fork 6,306'Spraberry 7,167'Wolfcamp 8,731'Strawn Devonian Ellenburger Fusselman
42-461-43555 BROOK N-12F · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,417'Grayburg 3,998'San Andres 4,240'Clear Fork 6,301'Spraberry 7,168'Wolfcamp 8,737'Fusselman Strawn Ellenburger Devonian
42-461-43570 BROOK UNIT N-12L · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,417'Grayburg 4,042'San Andres 4,257'Clear Fork 6,321'Spraberry 7,189'Fusselman Ellenburger Devonian Strawn Wolfcamp
42-461-41139 PEMBROOK UNIT · PIONEER NATURAL RES. USA, INC.
0.5 mi
Yates 2,414'Grayburg 4,130'San Andres 4,248'Spraberry 7,186'Dean 8,602'Devonian Fusselman Ellenburger Dean Strawn Wolfcamp
42-461-41137 PEMBROOK UNIT · PIONEER NATURAL RES. USA, INC.
0.5 mi
Yates 2,415'Grayburg 4,135'San Andres 4,264'Spraberry 7,199'Dean 8,602'Wolfcamp Ellenburger Devonian Strawn Fusselman

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"1,279 ft1,485 sx
9.625"5,660 ft1,875 sx
5.5"24,644 ft1,735 sx

Permit History (1)

Applications (1)

#914013 A PIONEER NATURAL RES. USA, INC.
received 2026-03-09

Records & Logs

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

W-2/G-1 2026-07-29 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.

Lat 31.499604
Lon -101.898060

Well Details

Well Number
2H
Max Depth
10,714 ft
Drill Type
Horizontal
County
UPTON
District
9

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