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42-383-36135

Final Completion

UNIVERSITY 58-31

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

Permits

1

Max Depth

9,600 ft

First Permit

2008-01-15

Latest Activity

2008-01-15

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2008-04-28

Shut-In

—

Plugged

2015-10-19

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2008-04

Last Production

2020-07

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 2,564 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
TOP UPPER SPRABERRY (Spraberry)5,606 ft-3,042 ft
TOP LOWER SPRABERRY (Spraberry)6,164 ft-3,600 ft
TOP DEAN (Dean)6,996 ft-4,432 ft
TOP WOLFCAMP (Wolfcamp)7,159 ft-4,595 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 (4)

IntervalType
5,624–5,789 ftPerforated
6,209–6,493 ftPerforated
7,045–7,154 ftPerforated
7,350–8,094 ftPerforated

Casing (2)

SizeSet DepthCement
8.625"559 ft300 sx
4.5"8,488 ft925 sx

Permit History (1)

#652663 Drill Final Completion

UNIVERSITY "58-31" · 9,600 ft

2008-01-15

Spud 2008-03-06

Applications (1)

#652663 A PIONEER NATURAL RES. USA, INC.
received 2008-01-08

Records & Logs

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

W-2/G-1 2008-06-25 log on file
W-2/G-1 2008-07-22
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
1
Max Depth
9,600 ft
Drill Type
Vertical
County
REAGAN
District
7
Operator
PIONEER NATURAL RES. USA INC.
Completed
2008-04-28

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
15,401