WELL · 42-409-31561 · DISTRICT 4
Welder E.H. #1
San Patricio County · Plymouth (Magnolia Upper) field · Shut IN · Vertical
Welder E.H. #1 (API 42-409-31561) is a well in San Patricio County operated by Welderxp Ltd., completed January 2, 1982 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued August 25, 1981, permitted to 7,000 ft.
It was permitted by Sun Expl. & Prod. CO.-Houston and has since transferred to Welderxp Ltd. on the wellbore schedule.
Its lease has reported 3.12K barrels of oil and 3.96K mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Sun Expl. & Prod. Co.-Houston; the EWA schedule now lists a different operator.
- Based in
- San Antonio, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 29, 2026
- Permits on file
- 14
- Phone
- (210) 354-1515
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Welderxp Ltd. |
| Production reports | Efp Energythrough Apr 1996 |
| Latest permit | Sun Expl. & Prod. Co.-HoustonAug 25, 1981 |
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
- Aug 25, 1981
- last permit issued
- Jan 2, 1982
- completed
- 3.12K
- cumulative oil, bbl
- 3.96K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 2, 1982
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Welder, E.H. O-4-9963 | Plymouth (Magnolia, Upper) | Welderxp Ltd. | 1 | 3.12K | 3.96K | Jan 1993 – 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.
- 1Five-Jab, Inc.Jan 1993 → Feb 1996
- 2Efp EnergyMar 1996 → Apr 1996
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 131335-99 | Drill | Sun Expl. & Prod. Co.-Houston | Aug 25, 1981 | Aug 25, 1981 | Oct 11, 1981 | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-9963 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,836 | 5,842 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 675 | 14.75 | 625 S |
| 2.375 | 5,726 | — | — |
| 7 | 6,800 | 9.875 | 850 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 | Jan 12, 1984 | Jan 11, 1982 | — |
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 42-409-31561 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-31561 → 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/40931561, documented in the API reference.