WELL · 42-391-01740 · DISTRICT 2
Mellon Oil Unit #20
Refugio County · Tom Oconnor (4400) field · Vertical
Mellon Oil Unit #20 (API 42-391-01740) is a plugged well in Refugio County, plugged May 9, 2011, last operated by T-C Oil Company LLC.
The RRC has issued one drilling permit, issued October 7, 1977, permitted to 5,826 ft.
It was permitted by Mellon Oil Unit and has since transferred to T-C Oil Company LLC on the wellbore schedule.
Its lease has reported 852K barrels of oil and 451K mcf of gas since January 1993, last reporting in July 2017. The lease carries 28 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mellon Oil Unit; the EWA schedule now lists a different operator.
Refugio, TX · P-5 Y, filed Oct 4, 2025 · 287 permits on file · (361) 646-9296
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | T-C Oil Company LLC |
| Production reports | T-C Oil Company, LLCthrough Mar 2015 |
| Latest permit | Mellon Oil UnitOct 7, 1977 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,826
- total depth, ft
- 1
- permits on file
- Oct 7, 1977
- last permit issued
- Sep 28, 1977
- completed
- 852K
- cumulative oil, bbl
- 451K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2017
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 28, 1977
- Shut in
- —
- Plugged
- May 9, 2011
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 28 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mellon Oil Unit O-2-2192 | Tom Oconnor (4400) | T-C Oil Company, LLC | 28 | 852K | 451K | Jan 1993 – Jul 2017 |
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.
- 1Mellon Oil UnitJan 1993 → Jun 2004
- 2T - C Oil CompanyJul 2004 → Dec 2011
- 3T-C Oil Company, LLCJan 2012 → Mar 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 10617-99 | Recompletion | Mellon Oil Unit | Oct 7, 1977 | Oct 7, 1977 | — | 5,826 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-2192 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,394 | 4,397 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,029 | 15 | 375 S |
| 7 | 5,830 | — | 1,026 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 | Oct 12, 1977 | — |
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 42-391-01740 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01740 → 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/39101740, documented in the API reference.