WELL · 42-391-01559 · DISTRICT 2
Tom Oconnor (5800 SD) Fld. Unit #103
Refugio County · Tom Oconnor (5800) field · Vertical
Tom Oconnor (5800 SD) Fld. Unit #103 (API 42-391-01559) is a disposal or injection well in Refugio County operated by Hilcorp Energy Company under an active UIC permit.
The RRC has issued one drilling permit (amended once), issued September 7, 1988, permitted to 5,900 ft.
It was permitted by Quintana Pet. Corp. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 2 leases have reported 1.19M barrels of oil and 1.38M mcf of gas since January 1993, last reporting in July 2026. The leases carry 64 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 447K barrels injected in the 12 months reported through November 2025.
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 · 3,453 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.Sep 7, 1988 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,900
- total depth, ft
- 2
- permits on file
- Sep 7, 1988
- last permit issued
- —
- completed
- 1.19M
- cumulative oil, bbl
- 1.38M
- 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 64 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Oconnor, Thomas -A- O-2-1542 | Tom Oconnor | Hilcorp Energy Company | 36 | 650K | 756K | Jan 1993 – Jul 2026 |
| O'Connor, Thomas "A" O-2-7579 | Tom O'Connor (5770 U, South) | Hilcorp Energy Company | 28 | 538K | 627K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 60,819 · prior 12 45,492(+34%)
Gas, mcf lease total
Last 12 months 1,196 · prior 12 2,441(-51%)
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 |
|---|---|---|---|---|---|---|
| 350146-98 | Other | Quintana Pet. Corp. | Oct 19, 1989 | Sep 7, 1988 | — | 5,900 |
| 350146-99 | Recompletion | Quintana Pet. Corp. | Aug 15, 1988 | Sep 7, 1988 | — | 5,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-1542 | — | — | — | — |
| — | — O-2-7579 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 48 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LagartoLARGARTO | 1,500 | -1,452 |
| Oakville | 2,750 | -2,702 |
| CatahoulaCATAHOULA (MIOCENE) | 3,300 | -3,252 |
| Catahoula | 3,686 | -3,638 |
| AnahuacANAHUAC (MIOCENE) | 4,100 | -4,052 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,317 |
| Frio | 4,443 | -4,395 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,952 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,832 |
| JacksonJACKSON/YEGUA | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,838 | 5,846 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,015 | 14 | 350 S |
| 5.5 | 5,898 | 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 | Jun 7, 2024 | Apr 26, 2024 | — |
| 00 | Oct 6, 2020 | Sep 29, 2020 | — |
| 00 | Aug 19, 1994 | Jun 20, 1994 | — |
| 00 | Jun 8, 1990 | Oct 23, 1989 | — |
| 00 | Apr 13, 1990 | — | — |
| 00 | Nov 16, 1988 | Sep 9, 1988 | Yes |
| 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 42-391-01559 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01559 → 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
- 447K
- bbl, last 12 reported months
- 788K
- bbl, all reported
- Nov 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000069706 | H-1 Injection | Active | 10,000 | 1,800 | 5,835–5,848 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 446,602 · prior 12 341,532(+31%)
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/39101559, documented in the API reference.