42-177-30881

Final Completion Horizontal

MUENZLER

GONZALES County · District 1 · FIRST ROCK INC. · MAG (AUSTIN CHALK)

Permits

Max Depth

7,120 ft

First Permit

1981-03-26

Latest Activity

2021-12-28

Lifespan

41 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1984-01-19

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

ALCORN PROD CO. 1993-1995→ FIRST ROCK, INC. 1995-2023

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 (14) Elevation 350 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
REKLAW	1,800 ft	-1,450 ft
CARRIZO	2,000 ft	-1,650 ft
WILCOX - DISPOSAL (Wilcox)	2,500 ft	-2,150 ft
BASE WILCOX (Wilcox)	4,100 ft	-3,750 ft
NAVARRO	5,010 ft	-4,660 ft
BASE MIDWAY SHALE (Midway)	6,350 ft	-6,000 ft
TOP AUSTIN CHALK (Austin Chalk)	6,440 ft	-6,090 ft
AUSTIN CHALK - H2S (Austin Chalk)	6,565 ft	-6,215 ft
TOP EAGLEFORD SHALE (Eagle Ford)	6,870 ft	-6,520 ft
TOP BUDA (Buda)	6,935 ft	-6,585 ft
TOP GEORGETOWN (Georgetown)	7,060 ft	-6,710 ft
BUDA - H2S, DISPOSAL (Buda)	—	—
EAGLE FORD - H2S (Eagle Ford)	—	—
EDWARDS - H2S (Edwards)	—	—

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 ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section

✓ 42-177-31568 SCHAUER · ROYAL OIL & GAS CORP.

0.6 mi

Austin Chalk 6,522'Eagle Ford 6,862'Eagle Ford 6,862'Buda 6,902'Buda 6,905'Del Rio 7,000'

✓ 42-177-34156 LESTER UNIT · BARON ENERGY INC.

1.4 mi

Wilcox 3,452'Wilcox 3,452'Midway 5,270'Anacacho 6,680'Austin Chalk 6,810'Austin Chalk 6,810'Eagle Ford 7,170'Eagle Ford 7,170'Navarro —Carrizo —Buda —Edwards — +1 more

✓ 42-177-31954 LESTER UNIT · WILSON, BILLY R.

1.4 mi

Anacacho 6,600'Austin Chalk 6,715'

✓ 42-177-34452 LEWIS & CLARK 'S' · MILLENNIUM EXPLORATION CO. LLC

1.7 mi

Reklaw 1,580'Carrizo 2,070'Wilcox 2,180'Navarro 5,764'Austin Chalk 7,127'Eagle Ford —Buda —Edwards —

✓ 42-177-34454 LEWIS & CLARK 'N' · MILLENNIUM EXPLORATION CO. LLC

2.1 mi

Reklaw 1,842'Carrizo 1,920'Wilcox 3,080'Navarro 5,800'Austin Chalk 6,916'Eagle Ford —Buda —Edwards —

✓ 42-177-34547 STOREY-RICOCHET B · AUTERRA OPERATING, LLC

3.4 mi

Reklaw 1,200'Carrizo 1,365'Wilcox 2,092'Navarro 4,906'Austin Chalk 6,452'Eagle Ford 6,790'Buda —Edwards —

✓ 42-177-34546 STOREY-RICOCHET A · AUTERRA OPERATING, LLC

3.4 mi

Reklaw 1,200'Carrizo 1,365'Wilcox 2,092'Navarro 4,906'Austin Chalk 6,464'Eagle Ford 6,918'Edwards —Buda —

✓ 42-177-34510 STOBAUGH-STOREY A · AUTERRA OPERATING, LLC

4.3 mi

Anacacho 6,442'Austin Chalk 6,655'Eagle Ford 6,874'Wilcox —Reklaw —Buda —Edwards —Navarro —Carrizo —

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (3)

Interval	Type
6,488–8,523 ft	Open hole
6,615–6,858 ft	Perforated
6,947–7,034 ft	Perforated

Casing (4)

Size	Set Depth	Cement
10.75"	2,334 ft	1,150 sx
10.75"	2,335 ft	1,150 sx
2.375"	6,908 ft	—
5.5"	7,118 ft	600 sx

Permit History (3)

#875383 Recompletion Final Completion

MUENZLER UNIT · 6,800 ft

2021-12-28

Spud 2022-05-20

#227494 Recompletion Final Completion

MUENZLER, L. B. · 7,120 ft

1984-01-25

#113415 Drill Final Completion

MUENZLER, L.B. · 7,118 ft

1981-03-26

Spud 1981-04-03

Applications (3)

#875383 A FIRST ROCK, INC.

received 2021-12-16

#227494 A ALCORN PROD CO.

received 1984-01-24

#113415 A ALCORN PROD CO.

received 1981-03-26

Records & Logs

4 completion filings on record.

W-2/G-1 2022-07-21

W-2/G-1 1984-01-30

W-2/G-1 1981-06-05

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.

Google Maps → Explorer Map →

Lat 29.438730

Lon -97.529927

Well Details

Well Number: 1H
Max Depth: 7,120 ft
Drill Type: Horizontal
County: GONZALES
District: 1
Operator: FIRST ROCK INC.
Completed: 1984-01-19

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