42-493-32213

Final Completion

SCHIFFERS RANCH

WILSON County · District 1 · FIRST ROCK INC. · MARCELINA CREEK (BUDA)

Permits

Max Depth

7,400 ft

First Permit

1990-05-25

Latest Activity

2003-01-02

Lifespan

13 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1990-06-16

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: FIRST ROCK INC. ≠ Production: FIRST LIGHT OPERATING, LLC (reported 2026-04)

Resolved via: production → FIRST LIGHT OPERATING, LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

STONEBURNER EXPLORATION, INC. 1993-1993→ PENROD OIL COMPANY OF TEXAS, INC 1993-1993→ LUCROS INTERNATIONAL CORPORATION 1994-1994→ PEDECO, INC. 1999-1999→ FIRST ROCK, INC. 2001-2025→ FIRST LIGHT OPERATING, LLC 2025-2026

Lease Production

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

Formation Tops (7) Elevation 439 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CARRIZO SAND (Carrizo)	1,710 ft	-1,271 ft
MIDWAY SN (Midway)	4,790 ft	-4,351 ft
ANACACHO	6,698 ft	-6,259 ft
AUSTIN CHALK	6,876 ft	-6,437 ft
AUSTIN CHALK	6,900 ft	-6,461 ft
EAGLEFORD (Eagle Ford)	7,150 ft	-6,711 ft
BUDA	7,208 ft	-6,769 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
6,989–7,139 ft	Perforated
7,212–7,214 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	797 ft	335 sx
5.5"	7,212 ft	215 sx

Permit History (2)

#526361 Recompletion Final Completion

SCHIFFERS · 7,223 ft

2003-01-02

Spud 2003-01-04

#373160 Drill Final Completion

SCHIFFERS RANCH · 7,400 ft

1990-05-25

Spud 1990-05-28

Applications (2)

#526361 A FIRST ROCK, INC.

received 2002-12-13

#373160 A STONEBURNER EXPLORATION, INC.

received 1990-05-10

Records & Logs

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

W-2/G-1 2003-03-24 log on file

W-2/G-1 2003-07-14

W-2/G-1 1990-07-09 log on file

W-2/G-1 1990-07-14

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 WILSON County.

Well Details

Well Number: 3
Max Depth: 7,400 ft
Drill Type: Vertical
County: WILSON
District: 1
Operator: FIRST ROCK INC.
Completed: 1990-06-16

Operator

Name: FIRST ROCK, INC
Location: CORPUS CHRI, ST
P-5 Status: Active (filed 2026-04-06)
Cum Oil (all leases): 1,171,762 bbl
Cum Gas (all leases): 823,441 mcf
Activities: CSGD/P, G/PUR, OPRS/O
Total Permits: 68