WELL · 42-391-01731 · DISTRICT 2
Nordan L. A. Oconnor Thomas Est #26
Refugio County · Tom Oconnor (5800) field · Vertical
Nordan L. A. Oconnor Thomas Est #26 (API 42-391-01731) is a plugged well in Refugio County, plugged July 13, 2011, last operated by Nordan & Company.
The RRC has issued one drilling permit, issued November 6, 1995, permitted to 4,600 ft.
It was permitted by Mellon Oil Unit and has since transferred to Nordan & Company on the wellbore schedule.
Completion filings report 5 formation tops, including Lagarto, Oakville, Miocene (undifferentiated), Catahoula.
Its 3 leases have reported 23.6M barrels of oil and 15.4M mcf of gas since January 1993, last reporting in July 2026. The leases carry 625 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.
San Antonio, TX · P-5 Y, filed May 7, 2004 · 11 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Nordan & Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Mellon Oil UnitNov 6, 1995 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,600
- total depth, ft
- 1
- permits on file
- Nov 6, 1995
- last permit issued
- —
- completed
- 23.6M
- cumulative oil, bbl
- 15.4M
- 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
- Jul 13, 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 3 leases this well is completed on; they carry 625 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 |
| Mellon Oil Unit O-2-2192 | Tom Oconnor (4400) | T-C Oil Company, LLC | 28 | 852K | 451K | Jan 1993 – Jul 2017 |
| Nordan,l.a. - Oconnor,thos.,est. O-2-3955 | Tom Oconnor (5400 Sand) | T-C Oil Company, LLC | 3 | 10.7K | 16.7K | Jan 1993 – Jan 2017 |
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.
- 1Mellon Oil UnitJan 1993 → Jun 2004
- 2Nordan & CompanyJan 1993 → Jun 1998
- 3Quintana Pet. Corp.Jan 1993 → Nov 2000
- 4Hilcorp Energy CompanyDec 2000 → Apr 2026
- 5T - C Oil CompanyJul 2004 → Dec 2011
- 6T-C Oil Company, LLCJan 2012 → Mar 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 441137-99 | Recompletion | Mellon Oil Unit | Nov 1, 1995 | Nov 6, 1995 | Jan 3, 1996 | 4,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-2192 | — | — | — | — |
| — | — O-2-3955 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 49 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lagarto | 1 | 48 |
| Oakville | 2,450 | -2,401 |
| Miocene (undifferentiated)MIOCENE | 2,875 | -2,826 |
| Catahoula | 3,615 | -3,566 |
| Greta | 4,360 | -4,311 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,365 | 4,375 | Perforated |
| 4,387 | 4,392 | Perforated |
| 4,402 | 4,406 | Perforated |
| — | 3,820 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,213 | — | — |
| 7 | 5,904 | — | — |
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 | Nov 13, 2007 | Sep 5, 2007 | — |
| 00 | Aug 22, 2001 | Jun 28, 2001 | — |
| 00 | Jan 28, 1998 | Dec 15, 1997 | — |
| 00 | Apr 11, 1996 | Jan 26, 1996 | Yes |
| 00 | Feb 26, 1996 | — | — |
| 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 42-391-01731 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01731 → 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
- 0
- bbl, last 12 reported months
- 879K
- bbl, all reported
- Sep 1996
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000001969 | UIC Permit | Plugged Jul 28, 2011 | 0 | 0 | 3,630–0 |
| 000073845 | H-1 Injection | Plugged Jul 28, 2011 | 5,000 | 2,250 | 5,784–5,801 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 1,456(-100%)
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/39101731, documented in the API reference.