TEXAS · WELLS · SAN PATRICIO COUNTY · API 42-409-01558 · DISTRICT 04
Welder E.H. -C- #56
San Patricio County · Plymouth (6000 -B- Sand) field · Producing · Vertical
Welder E.H. -C- #56 (API 42-409-01558) is a well in San Patricio County operated by Mcgowan Working Partners Inc., completed October 9, 2012 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued January 30, 1996, permitted to 6,151 ft.
It was permitted by Marathon Oil Company and has since transferred to Mcgowan Working Partners Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including Heep A Sand, Heep B Sand, Heep C Sand.
Its 2 leases have reported 826K barrels of oil and 1.29M mcf of gas since January 1993, last reporting in July 2026. The leases carry 52 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Marathon Oil Company; the EWA schedule now lists a different operator.
- Based in
- Jackson, MS
- P-5 status
- Active (A)
- P-5 last filed
- Oct 27, 2025
- Permits on file
- 60
- Phone
- (601) 982-3444
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | McGowan Working Partners Inc. |
| Production reports | McGowan Working Partners, Inc.through Apr 2026 |
| Latest permit | Marathon Oil CompanyJan 30, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,151
- total depth, ft
- 1
- permits on file
- Jan 30, 1996
- last permit issued
- Oct 9, 2012
- completed
- 826K
- cumulative oil, bbl
- 1.29M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 9, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 2 leases this well is completed on; they carry 52 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Welder, E. H., -C- O-4-2126 | Plymouth | McGowan Working Partners, Inc. | 51 | 763K | 1.16M | Jan 1993 – Jul 2026 |
| Welder, E.H. -C- O-4-12523 | Plymouth (6000 -B- Sand) | McGowan Working Partners, Inc. | 1 | 63.2K | 129K | Jan 1996 – Jul 2026 |
Oil, barrels lease total
Last 12 months 40,018 · prior 12 37,441(+7%)
Gas, mcf lease total
Last 12 months 49,839 · prior 12 39,154(+27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil CompanyJan 1993 → Jan 2003
- 2EOG Resources, Inc.Feb 2003 → Feb 2004
- 3McGowan Working Partners, Inc.Aug 2012 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 443837-99 | Recompletion | Marathon Oil Company | Jan 18, 1996 | Jan 30, 1996 | Dec 12, 1995 | 6,151 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 9, 2012 | Welder E.H. -C- O-4-12523 | Plymouth (6000 -B- Sand) | McGowan Working Partners Inc. | Producing | 6,151 |
| — | Welder E. H. -C- O-4-2126 | Plymouth | McGowan Working Partners Inc. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 52 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Heep a Sand | 5,579 | -5,527 |
| Heep B Sand | 5,593 | -5,541 |
| Heep C Sand | 5,617 | -5,565 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,617 | 5,627 | Perforated |
| 5,671 | 5,676 | Perforated |
| 6,027 | 6,032 | Perforated |
| 6,048 | 6,051 | Perforated |
| — | 5,599 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13 | 328 | 16 | 200 S |
| 13 | 328 | — | — |
| 7.625 | 5,638 | 11 | 300 S |
| 7.625 | 5,638 | — | — |
| 2 | 6,025 | — | — |
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 20, 2013 | Feb 5, 2013 | — |
| 00 | May 29, 2009 | Apr 27, 2009 | — |
| 00 | Jun 20, 1996 | Jan 16, 1996 | Yes |
| 00 | Apr 15, 1996 | Jan 23, 1996 | Yes |
| 00 | Feb 16, 1996 | Nov 13, 1967 | — |
| 00 | Jan 12, 1984 | Nov 13, 1967 | — |
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 42-409-01558 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-01558 → 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/40901558, documented in the API reference.