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42-461-35949

Final Completion

UNIVERSITY 4-8

UPTON County · District 7 · PIONEER NATURAL RES. USA INC. · SHEEP MOUNTAIN (CONSOLIDATED)

Permits

2

Max Depth

10,500 ft

First Permit

2008-06-28

Latest Activity

2009-03-23

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2008-10-01

Shut-In

—

Plugged

2016-05-31

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2008-10

Last Production

2026-07

Lease Production

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

Oil
production & DCA →
Oil
production & DCA →
Oil
production & DCA →

Formation Tops (6) Elevation 2,742 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
TOP UPPER SPABERRY6,355 ft-3,613 ft
TOP UPPER SPRABERRY (Spraberry)6,355 ft-3,613 ft
TOP LOWER SPRABERRY (Spraberry)6,878 ft-4,136 ft
TOP DEAN (Dean)7,678 ft-4,936 ft
TOP WOLFCAMP (Wolfcamp)7,830 ft-5,088 ft
TOP STRAWN (Strawn)9,423 ft-6,681 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 (5)

IntervalType
6,406–6,642 ftPerforated
7,218–7,229 ftPerforated
7,728–8,149 ftPerforated
8,475–8,705 ftPerforated
9,614–9,781 ftPerforated

Casing (2)

SizeSet DepthCement
8.625"648 ft400 sx
4.5"10,248 ft1,200 sx

Permit History (2)

#679405 Recompletion Final Completion

UNIVERSITY "4-8" · 10,250 ft

2009-03-23

Spud 2009-03-02

#664310 Drill Final Completion

UNIVERSITY "4-8" · 10,500 ft

2008-06-28

Spud 2008-07-29

Applications (2)

#679405 A PIONEER NATURAL RES. USA, INC.
received 2009-03-12
#664310 A PIONEER NATURAL RES. USA, INC.
received 2008-06-12

Records & Logs

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

W-2/G-1 2009-05-04 log on file
W-2/G-1 2009-07-07
W-2/G-1 2008-12-22 log on file
W-2/G-1 2009-01-13
W-2/G-1 2009-01-06
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
1
Max Depth
10,500 ft
Drill Type
Vertical
County
UPTON
District
7
Operator
PIONEER NATURAL RES. USA INC.
Completed
2008-10-01

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