TEXAS · WELLS · REFUGIO COUNTY · T-C OIL CO.- O'CONNOR LEASE · API 42-391-31804 · DISTRICT 02
T-C Oil Co.- O Connor #78
Refugio County · Lake Pasture (H-440 Sand) field · Producing · Vertical
T-C Oil CO.- O Connor #78 (API 42-391-31804) is a well in Refugio County operated by T-C Oil Company LLC, completed March 14, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 15, 1984, permitted to 4,625 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 5 formation tops, including Lagarto, Eocene, Miocene (undifferentiated), Catahoula.
Its lease has reported 6.52M barrels of oil and 31.4M mcf of gas since January 1993, last reporting volume in April 2026. The lease carries 114 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 CompanyOct 15, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,625
- total depth, ft
- 1
- permits on file
- Oct 15, 1984
- last permit issued
- Mar 14, 2017
- completed
- 6.52M
- cumulative oil, bbl
- 31.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 14, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 114 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 – Apr 2026 |
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 |
|---|---|---|---|---|---|---|
| 254572-99 | Drill | T - C Oil Company | Oct 15, 1984 | Oct 15, 1984 | Nov 12, 1984 | 4,650 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 14, 2017 | T-C Oil Co.- O Connor O-2-2554 | Lake Pasture (H-440 Sand) | T-C Oil Company LLC | Producing | 4,625 |
Formation tops
As filed on W-2/G-1. Subsea from 59 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LagartoLARGARTO | 1 | 58 |
| Eocene | 2,180 | -2,121 |
| Miocene (undifferentiated)MIOCENE | 2,180 | -2,121 |
| Miocene (undifferentiated)MIOCENE | 3,020 | -2,961 |
| Catahoula | 3,670 | -3,611 |
| Greta | 4,350 | -4,291 |
| Lagarto | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,458 | 4,462 | Perforated |
| 4,466 | 4,472 | Perforated |
| 4,506 | 4,512 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,521 | 13.5 | 700 S |
| 5.5 | 4,610 | 8.75 | 873 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Mar 30, 2017 | Mar 17, 2017 | — |
| 00 | Dec 5, 2011 | Aug 8, 2011 | — |
| 00 | Jan 23, 1985 | Dec 14, 1984 | — |
| 00 | Jan 5, 1985 | — | — |
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 42-391-31804 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-31804 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/39131804, documented in the API reference.