42-383-35979

Final Completion

UNIVERSITY "12-12"

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

Permits

Max Depth

9,500 ft

First Permit

1983-09-15

Latest Activity

2007-05-19

Lifespan

24 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2007-10

Last Production

2026-07

Operator History

Chain of Custody

PIONEER NATURAL RES. USA, INC. 2007-2022→ REVERENCE OPERATING LLC 2024-2026

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 (4) Elevation 2,698 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
TOP UPPER SPRABERRY (Spraberry)	5,304 ft	-2,606 ft
TOP LOWER SPRABERRY (Spraberry)	5,812 ft	-3,114 ft
TOP DEAN (Dean)	6,576 ft	-3,878 ft
TOP WOLFCAMP (Wolfcamp)	6,750 ft	-4,052 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 (6)

Interval	Type
5,319–5,328 ft	Perforated
5,972–6,121 ft	Perforated
6,619–6,716 ft	Perforated
6,933–7,080 ft	Perforated
7,508–7,539 ft	Perforated
8,117–8,365 ft	Perforated

Casing (2)

Size	Set Depth	Cement
12.75"	856 ft	850 sx
4.5"	9,083 ft	1,130 sx

Permit History (2)

#638796 Drill Final Completion

UNIVERSITY "12-12" · 9,500 ft

2007-05-19

Spud 2007-07-28

#212654 Drill

UNIVERSITY 12/BLK.12 "A" · 7,100 ft

1983-09-15

Applications (2)

#638796 A PIONEER NATURAL RES. USA, INC.

received 2007-05-10

#212654 A PALO PETROLEUM, INC.

received 1983-08-30

Records & Logs

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

W-2/G-1 2007-12-13 log on file

W-2/G-1 2008-01-03

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 REAGAN County.

Well Details

Well Number: 4
Max Depth: 9,500 ft
Drill Type: Vertical
County: REAGAN
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: 15,401