42-461-33987

Final Completion

PEMBROOK UNIT

UPTON County · District 7 · PIONEER NATURAL RES. USA, INC.

Permits

Max Depth

8,300 ft

First Permit

1993-12-28

Latest Activity

1999-08-24

Lifespan

6 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

EXXON CORP. 1993-2000→ EXXON MOBIL CORPORATION 2000-2005→ PIONEER NATURAL RES. USA, INC. 2005-2026

Lease Production

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

Oil

production & DCA →

Formation Tops (6) Elevation 2,689 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CLEARFORK (Clear Fork)	6,154 ft	-3,465 ft
LOWER CLEARFORK (Clear Fork)	6,559 ft	-3,870 ft
UPPER SPRABERRY (Spraberry)	7,012 ft	-4,323 ft
HAZEL	7,185 ft	-4,496 ft
M SPRABERRY	7,623 ft	-4,934 ft
LOWER SPRABERRY (Spraberry)	7,903 ft	-5,214 ft

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 ↗

Perforations (3)

Interval	Type
7,017–7,224 ft	Perforated
7,628–7,939 ft	Perforated
7,975–7,992 ft	Open hole

Casing (2)

Size	Set Depth	Cement
12.75"	523 ft	330 sx
4.5"	7,975 ft	1,385 sx

Permit History (2)

#486923 Drill Final Completion

PEMBROOK UNIT · 8,200 ft

1999-08-24

Spud 1999-08-29

#419626 Drill

PEMBROOK UNIT · 8,300 ft

1993-12-28

Applications (2)

#486923 A PIONEER NATURAL RES. USA, INC.

received 1999-08-24

#419626 A EXXON CORP.

received 1993-12-23

Records & Logs

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

W-2/G-1 2023-10-04

W-2/G-1 1999-12-09 log on file

W-2/G-1 1999-12-16

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.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in UPTON County.

Well Details

Well Number: 939
Max Depth: 8,300 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: PIONEER NATURAL RES. USA, INC.

Operator

Name: PIONEER NATURAL RES. USA, INC
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: 15,403