WELL · 42-409-33082 · DISTRICT 4
Brown-Mauch Unit #1
San Patricio County · Plymouth field · Shut IN · Vertical
Brown-Mauch Unit #1 (API 42-409-33082) is a well in San Patricio County operated by Welderxp Ltd., completed February 10, 2020 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued September 30, 2018, permitted to 6,000 ft.
It was permitted by Welder Exploration & Prod., Inc. and has since transferred to Welderxp Ltd. on the wellbore schedule.
Completion filings report 3 formation tops, including Miocene (undifferentiated), Catahoula, Vicksburg.
No lease production has been reported under this well’s leases.
It holds an active disposal or injection permit; TexNet located 0 M2+ earthquakes within 10 km over the last two years.
Operator of record
Permitted by Welder Exploration & Prod., Inc.; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Nov 4, 2025 · 14 permits on file · (210) 601-1249
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Welderxp Ltd. |
| Production reports | none |
| Latest permit | Welder Exploration & Prod., Inc.Sep 30, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,000
- total depth, ft
- 1
- permits on file
- Sep 30, 2018
- last permit issued
- Feb 10, 2020
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 10, 2020
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.062975, -97.359075
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in San Patricio 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Brown-Mauch Unit O-4-14110 | Plymouth | Welderxp Ltd. | 1 | 0 | 0 | Apr 2018 – Jul 2026 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 836530-99 | Drill | Welder Exploration & Prod., Inc. | Feb 16, 2018 | Sep 30, 2018 | Mar 28, 2018 | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-14110 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 40 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE-LAGARTO-OAKVILLE - INJEC | 2,000 | -1,960 |
| CatahoulaCATAHOULA-FRIO - INJECTION/DISPO | 4,300 | -4,260 |
| CatahoulaCATAHOULA-ANAHUAC - INJECTION/DI | — | — |
| Vicksburg | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,668 | 5,724 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 537 | 12.25 | 480 S |
| 7 | 5,307 | 8.75 | 165 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 | Sep 22, 2020 | Sep 8, 2020 | — |
| 00 | Mar 26, 2019 | Jan 23, 2019 | Yes |
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 42-409-33082 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-33082 → 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.
Mauch42-409-33074
0.3 KM · Welder Exploration & Prod., Inc. · Section with this well →
| Miocene (undifferentiated) | 2,000 | -1,959 |
| Catahoula | 3,930 | -3,889 |
| Catahoula | 4,700 | -4,659 |
| Vicksburg | — |
Mauch-Angeline Unit B42-409-33084
0.5 KM · Welder Exploration & Prod., Inc. · Section with this well →
| Miocene (undifferentiated) | 2,130 | -2,090 |
| Catahoula | 3,950 | -3,910 |
| Catahoula | 4,500 | -4,460 |
| Vicksburg | — |
Mauch42-409-33075
0.6 KM · Welder Exploration & Prod., Inc. · Section with this well →
| Miocene (undifferentiated) | 2,070 | -2,032 |
| Catahoula | 3,900 | -3,862 |
| Catahoula | 4,500 | -4,462 |
| Vicksburg | — |
Mauch-Angeline Unit A42-409-33083
0.8 KM · Welder Exploration & Prod., Inc. · Section with this well →
| Miocene (undifferentiated) | 2,080 | -2,038 |
| Catahoula | 4,000 | -3,958 |
| Catahoula | 4,500 | -4,458 |
| Vicksburg | — |
Angeline42-409-33080
1.1 KM · Welder Exploration & Prod., Inc. · Section with this well →
| Miocene (undifferentiated) | 2,100 | -2,060 |
| Catahoula | 3,950 | -3,910 |
| Catahoula | 4,550 | -4,510 |
| Vicksburg | — |
Roots-Havelka42-409-33136
1.1 KM · Jura Energy Operating LLC · Section with this well →
| Miocene (undifferentiated) | 3,854 | -3,815 |
| Catahoula | 4,485 | -4,446 |
| Catahoula | 4,822 | -4,783 |
| Vicksburg | — |
Mauch-Roots Unit42-409-33089
1.3 KM · Welder Exploration & Prod., Inc. · Section with this well →
| Miocene (undifferentiated) | 2,050 | -2,010 |
| Catahoula | 4,000 | -3,960 |
| Catahoula | 4,350 | -4,310 |
| Vicksburg | 5,500 | -5,460 |
Baptist Foundation of TX, et AL42-409-32912
1.8 KM · Sandalwood Exploration, L.P. · Section with this well →
| Miocene (undifferentiated) | 3,410 | -3,369 |
| Catahoula | 4,006 | -3,965 |
| Catahoula | 4,006 | -3,965 |
| Catahoula | 4,006 | -3,965 |
| Massive Frio | 6,530 | -6,489 |
| Vicksburg | 8,070 | -8,029 |
| I-65 | 8,590 | -8,549 |
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 222K
- bbl, all reported
- Jan 2026
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000116579 | H-1 Injection | Active | 10,000 | 825 | 5,340–5,800 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
TexNet catalog via USGS
Seismicity near this well
- 0
- M2+ events within 10 km, last 2 years
- —
- largest
A proximity count, not an attribution. How to read it →
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/40933082, documented in the API reference.