42-003-38271

UNIVERITY BLOCK 9/WOLFCAMP/UNIT

ANDREWS County · District 8 · XTO ENERGY INC.

Permits

Max Depth

10,800 ft

First Permit

1997-08-28

Latest Activity

2003-08-22

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

CROSS TIMBERS OPERATING COMPANY 1993-2001→ EXXON CORP. 1993-1997→ XTO ENERGY INC. 2001-2026

Lease Production

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

Formation Tops (7) Elevation 3,171 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
GRAYBURG	4,278 ft	-1,107 ft
SAN ANDRES	4,682 ft	-1,511 ft
TUBB	5,732 ft	-2,561 ft
TUBB	5,737 ft	-2,566 ft
WOLFCAMP	8,426 ft	-5,255 ft
PENN (Pennsylvanian)	8,773 ft	-5,602 ft
DEVONIAN	10,389 ft	-7,218 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 (10)

Interval	Type
8,902–9,228 ft	Perforated
8,996–9,002 ft	Perforated
9,022–9,028 ft	Perforated
9,120–9,125 ft	Perforated
9,140–9,171 ft	Perforated
10,394–10,591 ft	Perforated
10,443–10,457 ft	Perforated
10,498–10,506 ft	Perforated
10,526–10,534 ft	Perforated
10,582–10,591 ft	Perforated

Casing (3)

Size	Set Depth	Cement
13.375"	326 ft	400 sx
8.625"	5,082 ft	850 sx
5.5"	10,695 ft	800 sx

Permit History (3)

#535563 Recompletion

UNIVERITY BLOCK 9/WOLFCAMP/UNIT · 8,530 ft

2003-08-22

#496059 Recompletion Final Completion

UNIVERSITY BLOCK 9/PENN/UNIT · 10,695 ft

2000-06-14

Spud 2000-10-13

#466443 Drill Final Completion

STATE UNIVERSITY AO · 10,800 ft

1997-08-28

Spud 1997-08-31

Applications (3)

#535563 A XTO ENERGY INC.

received 2003-08-20

#496059 A CROSS TIMBERS OPERATING COMPANY

received 2000-06-12

#466443 A CROSS TIMBERS OPERATING COMPANY

received 1997-08-19

Records & Logs

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

W-2/G-1 2017-02-28

W-2/G-1 2000-11-08

W-2/G-1 2001-01-04

W-2/G-1 1997-12-01 log on file

W-2/G-1 1998-03-09

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 ANDREWS County.

Well Details

Well Number: 11AO
Max Depth: 10,800 ft
Drill Type: Vertical
County: ANDREWS
District: 8
Operator: XTO ENERGY INC.

Operator

Name: XTO ENGY INC
Location: SPRING
P-5 Status: X (filed 2026-04-08)
Cum Oil (all leases): 772,419,164 bbl
Cum Gas (all leases): 11,039,899,986 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 16,138