WELL · 42-391-00515 · DISTRICT 2
Tom Oconnor 4400 Sand Gas Unit #W909A
Refugio County · Tom Oconnor (4400) field · Vertical
Tom Oconnor 4400 Sand Gas Unit #W909A (API 42-391-00515) is a well in Refugio County operated by Quintana Pet. Corp., completed November 3, 1976.
The RRC has issued 2 drilling permits between 1998 and 2008, permitted to 5,925 ft.
It was permitted by Hilcorp Energy Company and has since transferred to Quintana Pet. Corp. on the wellbore schedule.
Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 3 leases have reported 512K barrels of oil and 1.88M mcf of gas since January 1993, last reporting in July 2026. The leases carry 70 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Hilcorp Energy Company; the EWA schedule now lists a different operator.
Refugio, TX · P-5 Y, filed Jun 9, 2000 · 1,589 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Quintana Pet. Corp. |
| Production reports | Hilcorp Energy Companythrough Jul 2025 |
| Latest permit | Hilcorp Energy CompanyJan 31, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,925
- total depth, ft
- 2
- permits on file
- Jan 31, 2008
- last permit issued
- Nov 3, 1976
- completed
- 512K
- cumulative oil, bbl
- 1.88M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 3, 1976
- 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 3 leases this well is completed on; they carry 70 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Tom O'Connor (4150 Ft. Sd.) Unit O-2-8874 | Tom O'Connor (4150) | Hilcorp Energy Company | 68 | 512K | 461K | Jun 2004 – Jul 2026 |
| Williams, Maude et al 'B' G-2-170009 | Tom Oconnor (4200) | Hilcorp Energy Company | 1 | 0 | 290K | May 1998 – Feb 2008 |
| Tom Oconnor 4400 Sand Gas Unit G-2-69474 | Tom Oconnor (4400) | Quintana Pet. Corp. | 1 | 0 | 1.13M | Jan 1993 – May 1998 |
Oil, barrels lease total
Last 12 months 102 · prior 12 4,813(-98%)
Gas, mcf lease total
Last 12 months 86 · prior 12 366(-77%)
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 → Jul 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 653683-99 | Recompletion | Hilcorp Energy Company | Jan 22, 2008 | Jan 31, 2008 | Feb 14, 2008 | 5,925 |
| 475716-99 | Recompletion | Quintana Pet. Corp. | Apr 27, 1998 | May 1, 1998 | May 12, 1998 | 5,925 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-69474 | — | — | — | — |
| — | — G-2-170009 | — | — | — | — |
| — | — O-2-8874 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 57 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,122 | 4,130 | Perforated |
| 4,146 | 4,161 | Perforated |
| 4,358 | 4,365 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,008 | 16 | 350 S |
| 5 | 5,923 | 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 | Apr 24, 2008 | Mar 5, 2008 | Yes |
| 00 | Mar 28, 2008 | — | — |
| 00 | Dec 8, 1998 | Jul 17, 1998 | Yes |
| 00 | Oct 1, 1998 | — | — |
| 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 42-391-00515 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00515 → 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/39100515, documented in the API reference.