42-501-35591

Final Completion

CORNELL UNIT

YOAKUM County · District 8 · XTO ENERGY INC.

Permits

Max Depth

5,700 ft

First Permit

2006-06-23

Latest Activity

2009-02-06

Lifespan

3 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

Injection / Disposal

H-1 Injection Inactive UIC #000112190 permitted 2015-03-03

Permitted Volume

2,000 bbl/d

Max Pressure

2,150 psi

Injection Interval

4,300–5,415 ft

Injected (12mo)

—

Operator History

Chain of Custody

EXXON CORP. 1993-2000→ EXXON MOBIL CORPORATION 2000-2000→ CROSS TIMBERS OPERATING COMPANY 2000-2001→ XTO ENERGY INC. 2001-2025→ HILCORP ENERGY COMPANY 2025-2026

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 3,601 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
RUSTLER ANHYDRITE (Rustler)	2,167 ft	+1,434 ft
SALADO SALTS (Salado)	2,215 ft	+1,386 ft
YATES SADN (Yates)	2,912 ft	+689 ft
QUEEN ANHYDRITES & SANDS (Queen)	3,688 ft	-87 ft
GRAYBURG DOLOMITES (Grayburg)	4,354 ft	-753 ft
TRIASSIC DOCUM RED BEDS	—	—

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 (2)

Interval	Type
4,957–5,226 ft	Perforated
5,272–5,284 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	2,220 ft	750 sx
5.5"	5,415 ft	1,225 sx

Permit History (2)

#677835 Drill Final Completion

CORNELL UNIT · 5,700 ft

2009-02-06

Spud 2009-04-14

#619348 Drill

CORNELL UNIT · 5,700 ft

2006-06-23

Applications (2)

#677835 A XTO ENERGY INC.

received 2009-01-26

#619348 A XTO ENERGY INC.

received 2006-05-16

Records & Logs

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

W-2/G-1 2009-10-15 log on file

W-2/G-1 2009-12-10

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images 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 YOAKUM County.

Well Details

Well Number: 311
Max Depth: 5,700 ft
Drill Type: Vertical
County: YOAKUM
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