WELL · 42-409-01589 · DISTRICT 4
Welder E. H. -C- #135
San Patricio County · Plymouth (6100 Sand) field · Vertical
Welder E. H. -C- #135 (API 42-409-01589) is a permitted well in San Patricio County filed by Mcgowan Working Partners, Inc.; no completion report is on file yet.
The RRC has issued 4 drilling permits between 1977 and 2013, permitted to 6,162 ft.
It was permitted by Mcgowan Working Partners, Inc. and has since transferred to Marathon Oil Company on the wellbore schedule.
Completion filings report 6 formation tops, including Miocene (undifferentiated), Anaguac, Frio, Heep 5600' Sand.
Its 2 leases have reported 43.1K barrels of oil and 142K mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by McGowan Working Partners, Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Apr 4, 2026 · 3,707 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil Company |
| Production reports | McGowan Working Partners, Inc.through Apr 2026 |
| Latest permit | McGowan Working Partners, Inc.Apr 23, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,162
- total depth, ft
- 4
- permits on file
- Apr 23, 2013
- last permit issued
- —
- completed
- 43.1K
- cumulative oil, bbl
- 142K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| E. H. Welder 'C' O-4-13790 | Plymouth (6100 Sand) | McGowan Working Partners, Inc. | 1 | 43.1K | 142K | May 2013 – Jul 2026 |
| Welder, E. H. -C- G-4-78077 | Plymouth (5350) | McGowan Working Partners, Inc. | 1 | 0 | 0 | Jan 1993 – May 2013 |
Oil, barrels lease total
Last 12 months 3,665 · prior 12 3,427(+7%)
Gas, mcf lease total
Last 12 months 6,686 · prior 12 4,655(+44%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1McGowan Working Partners, Inc.May 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 760987-99 | Recompletion | McGowan Working Partners, Inc. | Apr 17, 2013 | Apr 23, 2013 | Apr 23, 2013 | 6,162 |
| 266095-99 | Recompletion | Marathon Oil Company | Jan 14, 1985 | May 20, 1985 | — | 6,162 |
| 27898-99 | Recompletion | Marathon Oil Company | Jul 5, 1978 | Jul 5, 1978 | — | 6,162 |
| 14010-99 | Recompletion | Marathon Oil Company | Dec 14, 1977 | Dec 14, 1977 | — | 6,162 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-78077 | — | — | — | — |
| — | — O-4-13790 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 58 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE & YOUNGER | 1 | 57 |
| Anaguac | 4,450 | -4,392 |
| Frio | 5,100 | -5,042 |
| Heep 5600' Sand | 5,592 | -5,534 |
| Magnolia 5800' Sand | 5,842 | -5,784 |
| Plymouth 6100' Sand | 6,115 | -6,057 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,356 | 5,359 | Perforated |
| 5,598 | 5,604 | Perforated |
| 5,859 | 5,863 | Perforated |
| 6,050 | 6,058 | Perforated |
| 6,124 | 6,128 | Perforated |
| — | 5,592 | Perforated |
| — | 6,145 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,193 | — | 750 S |
| 10.75 | 1,207 | 15 | 750 S |
| 2.875 | 2,783 | — | — |
| 2 | 5,562 | — | — |
| 5.5 | 6,162 | 9.875 | 500 S |
| 5.5 | 6,162 | — | 500 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 | Dec 19, 2013 | Jun 12, 2013 | — |
| 00 | Sep 19, 1985 | Aug 30, 1985 | — |
| 00 | Jan 12, 1984 | Jan 26, 1978 | — |
| 00 | Jan 12, 1984 | — | — |
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 42-409-01589 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-01589 → 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/40901589, documented in the API reference.