42-161-30466

WILLIFORD GAS UNIT NO. 1

FREESTONE County · District 5 · XTO ENERGY INC.

Permits

Max Depth

12,422 ft

First Permit

1978-12-12

Latest Activity

2003-10-28

Lifespan

25 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

Lease Production

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

Formation Tops (7) Elevation 442 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
AUSTIN CHALK	3,468 ft	-3,026 ft
RODESSA	7,349 ft	-6,907 ft
PETTIT	7,929 ft	-7,487 ft
TRAVIS PEAK	8,100 ft	-7,658 ft
COTTON VALLEY SD (Cotton Valley)	10,010 ft	-9,568 ft
BOSSIER	11,635 ft	-11,193 ft
COTTON VALLEY LIME (Cotton Valley)	12,205 ft	-11,763 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 (2)

Interval	Type
11,395–11,530 ft	Perforated
12,255–12,269 ft	Perforated

Casing (4)

Size	Set Depth	Cement
15.375"	80 ft	8 sx
9.625"	4,862 ft	1,860 sx
2.875"	12,156 ft	—
5.5"	12,419 ft	1,600 sx

Permit History (3)

#536867 Recompletion

WILLIFORD GAS UNIT NO. 1 · 12,422 ft

2003-10-28

#458889 Recompletion Final Completion

WILLIFORD GAS UNIT #1 · 12,422 ft

1997-02-20

Spud 1996-11-14

#38671 Drill Final Completion

WILLIFORD · 12,422 ft

1978-12-12

Spud 1979-02-17

Applications (3)

#536867 A XTO ENERGY INC.

received 2003-09-26

#458889 A MARATHON OIL COMPANY

received 1997-02-20

#38671 A TEXAS OIL & GAS CORP.

received 1978-12-12

Records & Logs

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

W-2/G-1 1997-02-13 log on file

W-2/G-1 1997-03-07

W-2/G-1 1979-06-04

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 FREESTONE County.

Well Details

Well Number: 1
Max Depth: 12,422 ft
Drill Type: Vertical
County: FREESTONE
District: 5
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: 16,139