WELL · 42-177-30881 · DISTRICT 1
Muenzler #1H
Gonzales County · Mag (Austin Chalk) field · Horizontal
Muenzler #1H (API 42-177-30881) is a horizontal well in Gonzales County operated by First Rock Inc., completed January 19, 1984.
The RRC has issued 3 drilling permits between 1981 and 2021, permitted to 7,120 ft.
Completion filings report 10 formation tops, including Reklaw, Carrizo, Wilcox, Navarro.
Its lease has reported 47.8K barrels of oil and 14.8K mcf of gas since January 1993, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Corpus Christ, TX · P-5 Y, filed Feb 4, 2026 · 68 permits on file · (361) 215-5559
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | First Rock Inc. |
| Production reports | First Rock, Inc.through Oct 2023 |
| Latest permit | First Rock, Inc.Dec 28, 2021 |
- 7,120
- total depth, ft
- 3
- permits on file
- Dec 28, 2021
- last permit issued
- Jan 19, 1984
- completed
- 47.8K
- cumulative oil, bbl
- 14.8K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 19, 1984
- Shut in
- —
- Plugged
- —
Surface location
29.438730, -97.529927
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Gonzales County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Muenzler O-1-9601 | Mag (Austin Chalk) | First Rock, Inc. | 2 | 47.8K | 14.8K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 0
Gas, mcf lease total
Last 12 months 0 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Alcorn Prod Co.Jan 1993 → Jul 1995
- 2First Rock, Inc.Sep 1995 → Oct 2023
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 875383-99 | Recompletion | First Rock, Inc. | Dec 16, 2021 | Dec 28, 2021 | May 20, 2022 | 6,800 |
| 227494-99 | Recompletion | Alcorn Prod Co. | Jan 24, 1984 | Jan 25, 1984 | — | 7,120 |
| 113415-99 | Drill | Alcorn Prod Co. | Mar 26, 1981 | Mar 26, 1981 | Apr 3, 1981 | 7,118 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-9601 | — | — | — | — |
| — | — O-1-9601 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 350 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Reklaw | 1,800 | -1,450 |
| Carrizo | 2,000 | -1,650 |
| WilcoxWILCOX - DISPOSAL | 2,500 | -2,150 |
| WilcoxBASE WILCOX | 4,100 | -3,750 |
| Navarro | 5,010 | -4,660 |
| MidwayBASE MIDWAY SHALE | 6,350 | -6,000 |
| Austin ChalkTOP AUSTIN CHALK | 6,440 | -6,090 |
| Austin ChalkAUSTIN CHALK - H2S | 6,565 | -6,215 |
| Eagle FordTOP EAGLEFORD SHALE | 6,870 | -6,520 |
| BudaTOP BUDA | 6,935 | -6,585 |
| GeorgetownTOP GEORGETOWN | 7,060 | -6,710 |
| BudaBUDA - H2S, DISPOSAL | — | — |
| Eagle FordEAGLE FORD - H2S | — | — |
| EdwardsEDWARDS - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,488 | 8,523 | Open hole |
| 6,615 | 6,858 | Perforated |
| 6,947 | 7,034 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,334 | 14.75 | 1,150 S |
| 10.75 | 2,335 | 14.75 | 1,150 S |
| 2.375 | 6,908 | — | — |
| 5.5 | 7,118 | 9.875 | 600 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Apr 27, 2023 | Jul 21, 2022 | — |
| 00 | May 16, 1984 | Jan 30, 1984 | — |
| 00 | May 2, 1984 | Jan 30, 1984 | — |
| 00 | Jan 12, 1984 | Jun 5, 1981 | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-177-30881 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-177-30881 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Schauer42-177-31568
1.0 KM · Royal Oil & Gas Corp. · Section with this well →
| Austin Chalk | 6,522 | -6,172 |
| Eagle Ford | 6,862 | -6,512 |
| Eagle Ford | 6,862 | -6,512 |
| Buda | 6,902 | -6,552 |
| Del Rio | 7,000 | -6,650 |
Lester Unit42-177-34156
2.3 KM · Baron Energy Inc. · Section with this well →
| Wilcox | 3,452 | -3,148 |
| Wilcox | 3,452 | -3,148 |
| Midway | 5,270 | -4,966 |
| Anacacho | 6,680 | -6,376 |
| Austin Chalk | 6,810 | -6,506 |
| Austin Chalk | 6,810 | -6,506 |
| Eagle Ford | 7,170 | -6,866 |
| Eagle Ford | 7,170 | -6,866 |
13 TOPS · FIRST 8
Lester Unit42-177-31954
2.3 KM · Wilson, Billy R. · Section with this well →
| Anacacho | 6,600 | -6,267 |
| Austin Chalk | 6,715 | -6,382 |
Lewis & Clark 'S'42-177-34452
2.8 KM · Millennium Exploration Co. LLC · Section with this well →
| Reklaw | 1,580 | -1,563 |
| Carrizo | 2,070 | -2,053 |
| Wilcox | 2,180 | -2,163 |
| Navarro | 5,764 | -5,747 |
| Austin Chalk | 7,127 | -7,110 |
| Eagle Ford | — | |
| Buda | — | |
| Edwards | — |
Lewis & Clark 'N'42-177-34454
3.3 KM · Millennium Exploration Co. LLC · Section with this well →
| Reklaw | 1,842 | -1,820 |
| Carrizo | 1,920 | -1,898 |
| Wilcox | 3,080 | -3,058 |
| Navarro | 5,800 | -5,778 |
| Austin Chalk | 6,916 | -6,894 |
| Buda | — | |
| Eagle Ford | — | |
| Edwards | — |
Storey-Ricochet B42-177-34547
5.5 KM · Auterra Operating, LLC · Section with this well →
| Reklaw | 1,200 | -849 |
| Carrizo | 1,365 | -1,014 |
| Wilcox | 2,092 | -1,741 |
| Navarro | 4,906 | -4,555 |
| Austin Chalk | 6,452 | -6,101 |
| Eagle Ford | 6,790 | -6,439 |
| Buda | — | |
| Edwards | — |
Storey-Ricochet A42-177-34546
5.5 KM · Auterra Operating, LLC · Section with this well →
| Reklaw | 1,200 | -849 |
| Carrizo | 1,365 | -1,014 |
| Wilcox | 2,092 | -1,741 |
| Navarro | 4,906 | -4,555 |
| Austin Chalk | 6,464 | -6,113 |
| Eagle Ford | 6,918 | -6,567 |
| Buda | — | |
| Edwards | — |
Stobaugh-Storey A42-177-34510
7.0 KM · Auterra Operating, LLC · Section with this well →
| Anacacho | 6,442 | -6,108 |
| Austin Chalk | 6,655 | -6,321 |
| Eagle Ford | 6,874 | -6,540 |
| Buda | — | |
| Navarro | — | |
| Edwards | — | |
| Wilcox | — | |
| Carrizo | — |
9 TOPS · FIRST 8
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/17730881, documented in the API reference.