WELL · 42-391-01581 · DISTRICT 2
Oconnor Thomas -A- #A3U
Refugio County · Tom Oconnor (5900 Sand) field · Vertical
Oconnor Thomas -A- #A3U (API 42-391-01581) is a disposal or injection well in Refugio County operated by T-C Oil Company LLC under an active UIC permit.
The RRC has issued 2 drilling permits between 1979 and 1983, permitted to 5,920 ft.
It was permitted by Copano Company and has since transferred to T-C Oil Company LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Lagarto, Eocene, Oakville, Miocene (undifferentiated).
Its 2 leases have reported 22.8M barrels of oil and 14.9M mcf of gas since January 1993, last reporting in July 2026. The leases carry 596 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 379K barrels injected in the 12 months reported through September 2025.
Operator of record
Permitted by Copano Company; 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 | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Copano CompanyNov 17, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,920
- total depth, ft
- 2
- permits on file
- Nov 17, 1983
- last permit issued
- —
- completed
- 22.8M
- cumulative oil, bbl
- 14.9M
- 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 596 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Tom Oconnor (5800 SD) Fld. Unit O-2-5280 | Tom Oconnor (5800) | Hilcorp Energy Company | 594 | 22.8M | 14.9M | Jan 1993 – Jul 2026 |
| O'Conner, Thomas -A- O-2-5599 | Tom Oconnor | T-C Oil Company, LLC | 2 | 0 | 0 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 673,200 · prior 12 524,408(+28%)
Gas, mcf lease total
Last 12 months 117,526 · prior 12 83,712(+40%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Quintana Pet. Corp.Jan 1993 → Nov 2000
- 2Hilcorp Energy CompanyDec 2000 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 220850-99 | Recompletion | Copano Company | Nov 14, 1983 | Nov 17, 1983 | — | 5,920 |
| 48633-99 | Recompletion | Copano Company | May 16, 1979 | May 16, 1979 | — | 5,920 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-5599 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 49 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lagarto | 1 | 48 |
| LagartoLARGARTO | 1,500 | -1,451 |
| Eocene | 2,485 | -2,436 |
| Oakville | 2,750 | -2,701 |
| Miocene (undifferentiated)MIOCENE | 3,120 | -3,071 |
| CatahoulaCATAHOULA (MIOCENE) | 3,300 | -3,251 |
| Catahoula | 3,635 | -3,586 |
| Catahoula | 3,650 | -3,601 |
| AnahuacANAHUAC (MIOCENE) | 4,100 | -4,051 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,316 |
| Greta | 4,415 | -4,366 |
| Frio | 4,443 | -4,394 |
| Frio | 4,830 | -4,781 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,951 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,831 |
| JacksonJACKSON/YEGUA | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,625 | 5,855 | Perforated |
| 5,740 | 5,748 | Perforated |
| 5,784 | 5,799 | Perforated |
| 5,786 | 5,792 | Perforated |
| 5,791 | 5,799 | Perforated |
| — | 5,800 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,128 | 16 | 528 S |
| 1.875 | 5,572 | — | — |
| 1.875 | 5,792 | — | — |
| 5 | 5,910 | 9.875 | 528 S |
| 3.5 | — | — | — |
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 | Feb 24, 2017 | Feb 16, 2017 | — |
| 00 | Aug 9, 1994 | Jun 20, 1994 | — |
| 00 | Jun 11, 1993 | Mar 15, 1993 | — |
| 00 | Apr 20, 1993 | — | — |
| 00 | Jul 25, 1984 | May 22, 1984 | — |
| 00 | Jul 12, 1984 | May 22, 1984 | — |
| 00 | Jan 12, 1984 | Jul 10, 1979 | — |
| 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 42-391-01581 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01581 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 379K
- bbl, last 12 reported months
- 10.2M
- bbl, all reported
- Sep 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000078955 | H-1 Injection | Active | 7,500 | 2,250 | 5,784–5,799 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 378,777 · prior 12 263,084(+44%)
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/39101581, documented in the API reference.