42-461-40885

PRODUCING Horizontal

BROOK B-12S

UPTON County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA) R 40 EXC

Permits

1

Max Depth

10,170 ft

First Permit

2018-05-23

Latest Activity

2018-05-23

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2019-05-17

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2019-05

Last Production

2026-07

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (10) Elevation 2,746 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 1 ft+2,745 ft
YATES 2,301 ft+445 ft
GRAYBURG 3,751 ft-1,005 ft
SAN ANDRES - SALTWATER FLOW (San Andres)3,941 ft-1,195 ft
SPRABERRY 6,898 ft-4,152 ft
WOLFCAMP 8,471 ft-5,725 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
42-461-40886 BROOK B-12T · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,316'Grayburg 3,755'San Andres 3,948'Spraberry 6,884'Wolfcamp 8,456'Fusselman Strawn Ellenburger Devonian
42-461-40887 BROOK B-12U · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,320'Grayburg 3,761'San Andres 3,944'Spraberry 6,870'Wolfcamp 8,439'Devonian Fusselman Ellenburger Strawn
42-461-42261 BROOK B-2C · PIONEER NATURAL RES. USA, INC.
0.0 mi
Rustler 1,369'Yates 2,343'Grayburg 3,903'San Andres 4,136'Spraberry 6,979'Wolfcamp 8,536'Fusselman Ellenburger Devonian Strawn
42-461-42262 BROOK B-2D · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,363'Grayburg 3,951'San Andres 4,193'Spraberry 7,046'Wolfcamp 8,651'Strawn Fusselman Devonian Ellenburger
42-461-42263 BROOK B-2E · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,363'Grayburg 3,946'San Andres 5,409'Spraberry 7,080'Wolfcamp 8,691'Fusselman Ellenburger Devonian Strawn
42-461-41116 WOODFIN-DOLLIE E16C · PIONEER NATURAL RES. USA, INC.
1.3 mi
Yates 2,334'Grayburg 3,892'Grayburg 3,893'San Andres 4,047'San Andres 4,048'Spraberry 6,910'Spraberry 6,911'Devonian Ellenburger Fusselman Wolfcamp Strawn
42-461-41115 WOODFIN-DOLLIE E16B · PIONEER NATURAL RES. USA, INC.
1.3 mi
Yates 2,332'Grayburg 3,903'San Andres 4,063'Spraberry 6,929'Wolfcamp Ellenburger Fusselman Strawn Devonian
42-461-41177 BROOK A-5E · PIONEER NATURAL RES. USA, INC.
1.7 mi
Yates 2,308'Grayburg 3,947'San Andres 4,043'Spraberry 6,971'Dean 8,388'Wolfcamp 8,571'Fusselman Strawn Devonian Ellenburger

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).

Perforations (1)

IntervalType
9,508–21,930 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,288 ft1,275 sx
9.625"8,664 ft944 sx
5.5"21,960 ft3,264 sx

Permit History (1)

Applications (1)

#840281 A PIONEER NATURAL RES. USA, INC.
received 2018-05-21

Records & Logs

2 completion filings on record · 2 with log images at RRC.

W-2/G-1 2019-09-13 log on file
W-2/G-1 2019-07-08 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 31.430556
Lon -101.869996

Well Details

Well Number
19H
Max Depth
10,170 ft
Drill Type
Horizontal
County
UPTON
District
7
Completed
2019-05-17

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
15,399