WELL · 42-409-33077 · DISTRICT 4
Welder Efh Unit #6
San Patricio County · Plymouth field · Shut IN · Vertical
Welder Efh Unit #6 (API 42-409-33077) is a well in San Patricio County operated by Welderxp Ltd., completed May 29, 2018 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued November 30, 2017, permitted to 7,000 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.
Its lease has reported 305 barrels of oil since May 2018, last reporting in July 2026.
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 | Welder Exploration & Prod., Inc.through Dec 2020 |
| Latest permit | Welder Exploration & Prod., Inc.Nov 30, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,000
- total depth, ft
- 1
- permits on file
- Nov 30, 2017
- last permit issued
- May 29, 2018
- completed
- 305
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 29, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.078726, -97.387485
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 |
|---|---|---|---|---|---|---|
| Welder Efh Unit O-4-14088 | Plymouth | Welderxp Ltd. | 1 | 305 | 0 | May 2018 – Jul 2026 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Welder Exploration & Prod., Inc.Aug 2018 → Dec 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 833647-99 | Drill | Welder Exploration & Prod., Inc. | Nov 29, 2017 | Nov 30, 2017 | — | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-14088 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 41 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE-LAGARTO-OAKVILLE - INJEC | 1,990 | -1,949 |
| CatahoulaCATAHOULA-ANAHUAC - INJECTION/DI | 4,000 | -3,959 |
| CatahoulaCATAHOULA-FRIO - INJECTION/DISPO | 4,650 | -4,609 |
| Vicksburg | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,602 | 5,604 | Perforated |
| 5,609 | 5,611 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 883 | 12.25 | 580 S |
| 7 | 6,000 | 8.75 | 295 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 20, 2018 | Sep 17, 2018 | 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 42-409-33077 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-33077 → 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.
Brown-Mauch Unit42-409-33082
3.3 KM · Welder Exploration & Prod., Inc. · Section with this well →
| Miocene (undifferentiated) | 2,000 | -1,960 |
| Catahoula | 4,300 | -4,260 |
| Vicksburg | — | |
| Catahoula | — |
Mauch42-409-33074
3.6 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
3.8 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
3.9 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 | — |
Baptist Foundation of TX, et AL42-409-32912
4.1 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 |
Mauch-Angeline Unit A42-409-33083
4.1 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 | — |
Welder, Minnie S.42-409-33081
4.3 KM · Frostwood Energy, LLC · Section with this well →
| Miocene (undifferentiated) | 3,300 | -3,262 |
| Catahoula | 3,850 | -3,812 |
| Catahoula | 4,133 | -4,095 |
| Vicksburg | — |
Angeline42-409-33080
4.4 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 | — |
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/40933077, documented in the API reference.