WELL · 42-391-00481 · DISTRICT 2
Tom Oconnor (5800 SD) Fld. Unit #51A
Refugio County · Tom Oconnor (5800) field · Vertical
Tom Oconnor (5800 SD) Fld. Unit #51A (API 42-391-00481) is a former disposal or injection well in Refugio County, last operated by Hilcorp Energy Company; its UIC permit is no longer active.
The RRC has issued 2 drilling permits between 1999 and 2000, permitted to 5,918 ft.
It was permitted by Quintana Pet. Corp. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 8 formation tops, including Surface Sand Clay, Lagarto, Oakville, Catahoula.
Its 4 leases have reported 24M barrels of oil and 16.1M mcf of gas since January 1993, last reporting in July 2026. The leases carry 668 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Quintana Pet. Corp.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 26, 2026 · 3,454 permits on file · (713) 209-2411
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Quintana Pet. Corp.Mar 3, 2000 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,918
- total depth, ft
- 2
- permits on file
- Mar 3, 2000
- last permit issued
- —
- completed
- 24M
- cumulative oil, bbl
- 16.1M
- 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 4 leases this well is completed on; they carry 668 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Williams, Maude, Etal -A- O-2-1548 | Tom Oconnor | Hilcorp Energy Company | 25 | 160K | 372K | Jan 1993 – Jul 2026 |
| Tom Oconnor (5800 SD) Fld. Unit O-2-5280 | Tom Oconnor (5800) | Hilcorp Energy Company | 594 | 22.8M | 14.9M | Jan 1993 – Jul 2026 |
| Tom O'Connor (5730 Ft. Sd.) Unit O-2-8569 | Tom O'Connor (5730, East) | Hilcorp Energy Company | 38 | 1.01M | 815K | Oct 2000 – Jul 2026 |
| Williams, Maude et al 'A' O-2-8521 | Tom O'Connor (5730, East) | Quintana Pet. Corp. | 11 | 6.26K | 13.4K | Feb 2000 – Dec 2000 |
Oil, barrels lease total
Last 12 months 686,927 · prior 12 546,584(+26%)
Gas, mcf lease total
Last 12 months 118,482 · prior 12 85,314(+39%)
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 |
|---|---|---|---|---|---|---|
| 492527-99 | Field transfer | Quintana Pet. Corp. | Feb 28, 2000 | Mar 3, 2000 | Apr 15, 1999 | 5,918 |
| 482973-99 | Recompletion | Quintana Pet. Corp. | Feb 26, 1999 | Apr 1, 1999 | Apr 15, 1999 | 5,918 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-1548 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-8521 | — | — | — | — |
| — | — O-2-8569 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 54 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,801 | 5,811 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,192 | 14 | 350 S |
| 5.5 | 5,915 | 8.75 | 500 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 | Nov 28, 2000 | Mar 16, 2000 | — |
| 00 | May 3, 2000 | Mar 16, 2000 | — |
| 00 | Apr 12, 2000 | Jul 27, 1999 | — |
| 00 | Oct 13, 1999 | Jul 27, 1999 | — |
| 00 | Aug 6, 1999 | — | — |
| 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 42-391-00481 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00481 → 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
- 0
- bbl, all reported
- —
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000122789 | H-1 Injection | Not activated | 3,500 | 2,896 | 5,792–5,830 |
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/39100481, documented in the API reference.