WELL · 42-391-01841 · DISTRICT 2
Thomas O'Connor "B" #36
Refugio County · Vertical
Thomas O'Connor "B" #36 (API 42-391-01841) is a permitted well in Refugio County filed by Hilcorp Energy Company; no completion report is on file yet.
The RRC has issued 3 drilling permits between 1992 and 2010, permitted to 6,000 ft.
Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 3 leases have reported 134K barrels of oil and 503K mcf of gas since January 1993, last reporting in October 2021. The leases carry 22 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,454
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Hilcorp Energy Companythrough Mar 2018 |
| Latest permit | Hilcorp Energy CompanyJun 17, 2010 |
- 6,000
- total depth, ft
- 3
- permits on file
- Jun 17, 2010
- last permit issued
- —
- completed
- 134K
- cumulative oil, bbl
- 503K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Oct 2021
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 3 leases this well is completed on; they carry 22 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| O Connor, Thos. -B- O-2-964 | Mary Ellen Oconnor (FQ-40 Sand) | Hilcorp Energy Company | 11 | 75.5K | 186K | Jan 1993 – Oct 2021 |
| O Connor, Thos. -B- O-2-954 | Mary Ellen Oconnor (FQ- 9) | Hilcorp Energy Company | 10 | 53.5K | 308K | Jan 1993 – Apr 2020 |
| O'Connor, Thomas 'B' O-2-8387 | Mary Ellen Oconnor (FT-5) | Hilcorp Energy Company | 1 | 4.51K | 8.62K | Jul 1998 – Sep 2018 |
No volumes reported on these leases in the last three years.
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 → Mar 2018
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 697557-99 | Recompletion | Hilcorp Energy Company | Jun 14, 2010 | Jun 17, 2010 | — | 6,000 |
| 476592-99 | Recompletion | Quintana Pet. Corp. | May 26, 1998 | Jun 26, 1998 | May 12, 1998 | 6,000 |
| 404722-99 | Recompletion | Quintana Pet. Corp. | Oct 15, 1992 | Oct 16, 1992 | Nov 6, 1992 | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-954 | — | — | — | — |
| — | — O-2-964 | — | — | — | — |
| — | — O-2-8387 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 12 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LagartoLARGARTO | 1,500 | -1,488 |
| LagartoLARGARTO | 2,750 | -2,738 |
| Oakville | 2,750 | -2,738 |
| CatahoulaCATAHOULA (OLIGOCENE) | 3,300 | -3,288 |
| Oakville | 3,300 | -3,288 |
| AnahuacANAHUAC(MIOCENE) | 4,100 | -4,088 |
| Catahoula | 4,100 | -4,088 |
| AnahuacANAHUAC (MIOCENE) | 4,365 | -4,353 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,353 |
| FrioFRIO-GRETA (OLIG) | 4,785 | -4,773 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,988 |
| FrioMIDDLE FRIO (SINTON) | 5,400 | -5,388 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,868 |
| Lwr. Frio (Olig) | 6,000 | -5,988 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,518 | 5,523 | Perforated |
| 5,743 | 5,754 | Perforated |
| — | 5,894 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,260 | 12.25 | 450 S |
| 2.875 | 5,948 | 6.75 | 830 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 | Aug 26, 1998 | Jul 30, 1998 | Yes |
| 00 | Aug 5, 1998 | — | — |
| 00 | Dec 18, 1992 | Nov 20, 1992 | Yes |
| 00 | Dec 4, 1992 | — | — |
| 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 42-391-01841 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01841 → 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/39101841, documented in the API reference.