42-461-41670

PRODUCING Horizontal

BROOK A-4B

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

Permits

1

Max Depth

10,249 ft

First Permit

2021-02-22

Latest Activity

2021-02-22

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2022-01-06

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2021-09

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 (9) Elevation 2,705 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 2,298 ft+407 ft
GRAYBURG 3,923 ft-1,218 ft
SAN ANDRES - SALTWATER FLOW (San Andres)4,037 ft-1,332 ft
SPRABERRY 6,961 ft-4,256 ft
WOLFCAMP 8,565 ft-5,860 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
42-461-41666 BROOK A-4A · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,309'Grayburg 3,923'San Andres 4,034'Spraberry 6,969'Wolfcamp 8,573'Strawn Fusselman Devonian Ellenburger
42-461-41671 BROOK A-4C · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,299'Grayburg 3,925'San Andres 4,035'Spraberry 6,964'Wolfcamp 8,564'Strawn Devonian Ellenburger Fusselman
42-461-41672 BROOK A-4D · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,299'Yates 2,317'Grayburg 3,930'Grayburg 3,931'San Andres 4,038'San Andres 4,039'Spraberry 6,960'Spraberry 6,961'Wolfcamp 8,566'Wolfcamp 8,567'Devonian Strawn +2 more
42-461-41673 BROOK A-4E · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,297'Grayburg 3,931'Grayburg 3,932'San Andres 4,041'Spraberry 6,959'Wolfcamp 8,555'Fusselman Ellenburger Devonian Strawn
42-461-41674 BROOK A-4F · PIONEER NATURAL RES. USA, INC.
0.0 mi
Yates 2,298'Yates 2,299'Grayburg 3,934'San Andres 4,042'Spraberry 6,959'Spraberry 6,960'Wolfcamp 8,555'Ellenburger Wolfcamp Devonian Fusselman Strawn
42-461-41176 BROOK A-5B · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,293'Grayburg 3,953'San Andres 4,045'Spraberry 6,955'Dean 8,367'Wolfcamp 8,551'Fusselman Strawn Devonian Ellenburger
42-461-41178 BROOK A-5C · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,297'Grayburg 3,942'San Andres 4,044'Spraberry 6,952'Dean 8,361'Wolfcamp 8,548'Strawn Fusselman Devonian Ellenburger
42-461-41185 BROOK A-5G · PIONEER NATURAL RES. USA, INC.
0.3 mi
Yates 2,297'Grayburg 3,949'San Andres 4,045'Spraberry 6,969'Dean 8,379'Wolfcamp 8,551'Wolfcamp 8,568'Fusselman Devonian Strawn 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
9,495–19,476 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,260 ft1,350 sx
9.625"5,396 ft1,530 sx
5.5"19,501 ft1,365 sx

Permit History (1)

Applications (1)

#867251 A PIONEER NATURAL RES. USA, INC.
received 2021-01-22

Records & Logs

2 completion filings on record · 1 with log images at RRC.

W-2/G-1 2022-03-15
W-2/G-1 2022-02-15 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 31.448661
Lon -101.843598

Well Details

Well Number
2H
Max Depth
10,249 ft
Drill Type
Horizontal
County
UPTON
District
7
Completed
2022-01-06

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