WELL · 42-391-00311 · DISTRICT 2
T-C Oil Co.- O Connor #35
Refugio County · Lake Pasture (H-440 Sand) field · Vertical
T-C Oil CO.- O Connor #35 (API 42-391-00311) is a plugged well in Refugio County, plugged September 7, 2011, last operated by T-C Oil Company LLC.
The RRC has issued one drilling permit, issued June 12, 2007, permitted to 4,500 ft.
It was permitted by T - C Oil Company and has since transferred to T-C Oil Company LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Lagarto, Miocene (undifferentiated), Catahoula, Greta.
Its 2 leases have reported 6.52M barrels of oil and 31.4M mcf of gas since January 1993, last reporting in July 2026. The leases carry 115 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by T - C Oil Company; the EWA schedule now lists a different operator.
- Based in
- Refugio, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 3, 2025
- Permits on file
- 287
- Phone
- (361) 526-4693
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | T-C Oil Company LLC |
| Production reports | T-C Oil Company, LLCthrough Apr 2026 |
| Latest permit | T - C Oil CompanyJun 12, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,500
- total depth, ft
- 1
- permits on file
- Jun 12, 2007
- last permit issued
- —
- completed
- 6.52M
- cumulative oil, bbl
- 31.4M
- 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
- Sep 7, 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 2 leases this well is completed on; they carry 115 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| T-C Oil Co.- O'Connor O-2-2554 | Lake Pasture (H-440 Sand) | T-C Oil Company, LLC | 114 | 6.52M | 31.4M | Jan 1993 – Jul 2026 |
| T-C Oil Co.-O'Connor G-2-228683 | Lake Pasture (E-284) | T - C Oil Company | 1 | 0 | 0 | Jun 2007 – Sep 2011 |
Oil, barrels lease total
Last 12 months 275,727 · prior 12 367,755(-25%)
Gas, mcf lease total
Last 12 months 62,468 · prior 12 82,262(-24%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1T - C Oil CompanyJan 1993 → Dec 2011
- 2T-C Oil Company, LLCJan 2012 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 640004-99 | Recompletion | T - C Oil Company | Jun 1, 2007 | Jun 12, 2007 | Jun 5, 2007 | 4,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-228683 | — | — | — | — |
| — | — O-2-2554 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 59 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lagarto | 1 | 58 |
| Miocene (undifferentiated)MIOCENE | 2,248 | -2,189 |
| Catahoula | 3,750 | -3,691 |
| Greta | 4,370 | -4,311 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,884 | 2,904 | Perforated |
| — | 4,425 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,512 | 13.75 | 550 S |
| 4.5 | 4,642 | 7.875 | 675 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 | Aug 9, 2007 | Jul 6, 2007 | Yes |
| 00 | Aug 2, 2007 | — | — |
| 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 42-391-00311 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00311 → 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/39100311, documented in the API reference.