WELL · 42-409-33032 · DISTRICT 4
Welder Efh #4
San Patricio County · Plymouth field · Shut IN · Vertical
Welder Efh #4 (API 42-409-33032) is a well in San Patricio County operated by Welderxp Ltd., completed January 15, 2015 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 27, 2014, permitted to 7,500 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 41.2K barrels of oil and 19.9K mcf of gas since January 2015, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
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.May 27, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,500
- total depth, ft
- 2
- permits on file
- May 27, 2014
- last permit issued
- Jan 15, 2015
- completed
- 41.2K
- cumulative oil, bbl
- 19.9K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 15, 2015
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
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 |
|---|---|---|---|---|---|---|
| Welder Efh O-4-13987 | Plymouth | Welderxp Ltd. | 2 | 41.2K | 19.9K | Jan 2015 – 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.Jan 2015 → Dec 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 785269-98 | Drill | Welder Exploration & Prod., Inc. | Feb 18, 2015 | May 27, 2014 | Dec 3, 2014 | 7,500 |
| 785269-99 | Drill | Welder Exploration & Prod., Inc. | Apr 22, 2014 | May 27, 2014 | Dec 4, 2014 | 7,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-13987 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 32 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE-LAGARTO-OAKVILLE - INJEC | 2,690 | -2,658 |
| CatahoulaCATAHOULA-ANAHUAC - INJECTION/DI | 4,010 | -3,978 |
| CatahoulaCATAHOULA-FRIO - INJECTION/DISPO | 4,780 | -4,748 |
| Vicksburg | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,494 | 6,506 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 805 | 12.25 | 402 S |
| 5.5 | 6,650 | 7.875 | 626 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 | Mar 4, 2016 | Mar 17, 2015 | 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 42-409-33032 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-33032 → 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.
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/40933032, documented in the API reference.