WELL · 42-391-31609 · DISTRICT 2
O Connor Thomas -C- #81
Refugio County · Tom Oconnor (5900 Sand) field · Vertical
O Connor Thomas -C- #81 (API 42-391-31609) is a well in Refugio County operated by Hilcorp Energy Company, completed March 25, 1983.
The RRC has issued 5 drilling permits between 1982 and 2023, permitted to 7,000 ft.
Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 5 leases have reported 26.7M barrels of oil and 17.6M mcf of gas since January 1993, last reporting in July 2026. The leases carry 684 wells, so these are lease totals, not this well alone.
Operator of record
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 | Hilcorp Energy CompanyAug 25, 2023 |
- 7,000
- total depth, ft
- 5
- permits on file
- Aug 25, 2023
- last permit issued
- Mar 25, 1983
- completed
- 26.7M
- cumulative oil, bbl
- 17.6M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 25, 1983
- Shut in
- —
- Plugged
- —
Surface location
28.372319, -97.151919
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Refugio County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 5 leases this well is completed on; they carry 684 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Oconnor, Thomas, -C- O-2-2566 | Tom Oconnor (4500 Greta Mass.) | Hilcorp Energy Company | 18 | 646K | 278K | Jan 1993 – Jul 2026 |
| O'Connor, Thomas -C- O-2-2876 | Tom Oconnor (5900 Sand) | Hilcorp Energy Company | 59 | 2.99M | 2.17M | 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 |
| O'Connor, Thomas -C- O-2-9135 | Tom Oconnor (5200, East) | Hilcorp Energy Company | 12 | 272K | 61.7K | Apr 2007 – Jul 2026 |
| O'Connor, Thomas "C" G-2-181089 | Tom Oconnor (5300, East) | Hilcorp Energy Company | 1 | 0 | 185K | Jan 2001 – Jan 2004 |
Oil, barrels lease total
Last 12 months 695,706 · prior 12 547,009(+27%)
Gas, mcf lease total
Last 12 months 118,176 · prior 12 86,336(+37%)
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 |
|---|---|---|---|---|---|---|
| 893142-99 | Recompletion | Hilcorp Energy Company | Aug 22, 2023 | Aug 25, 2023 | Aug 3, 2023 | 6,116 |
| 540791-99 | Recompletion | Hilcorp Energy Company | Jan 15, 2004 | Jan 16, 2004 | Jan 16, 2004 | 6,116 |
| 503505-99 | Recompletion | Hilcorp Energy Company | Dec 28, 2000 | Dec 29, 2000 | Dec 27, 2000 | 6,116 |
| 348829-99 | Recompletion | Quintana Pet. Corp. | Jul 13, 1988 | Jul 15, 1988 | — | 6,116 |
| 182835-99 | Drill | Quintana Pet. Corp. | Dec 31, 1982 | Dec 31, 1982 | — | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-181089 | — | — | — | — |
| — | — O-2-2566 | — | — | — | — |
| — | — O-2-2876 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-9135 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 58 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,374 | 4,386 | Perforated |
| 4,402 | 4,414 | Perforated |
| 5,145 | 5,160 | Perforated |
| 5,221 | 5,229 | Perforated |
| 5,684 | 5,692 | Perforated |
| 5,789 | 5,799 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,515 | 14.75 | 770 S |
| 2.875 | 5,770 | — | — |
| 7.625 | 6,115 | 9.875 | 1,100 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 | Oct 3, 2023 | Sep 15, 2023 | — |
| 00 | Apr 6, 2004 | Feb 12, 2004 | Yes |
| 00 | Mar 25, 2004 | — | — |
| 00 | May 1, 2001 | Jan 10, 2001 | Yes |
| 00 | Mar 8, 2001 | — | — |
| 00 | Jan 27, 1989 | Dec 1, 1988 | Yes |
| 00 | Jan 21, 1989 | Apr 11, 1983 | — |
| 00 | Dec 17, 1988 | — | — |
| 00 | Jan 12, 1984 | Apr 11, 1983 | — |
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 42-391-31609 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-31609 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Tom O'CONNOR(5800SAND)FIELD Unit42-391-31839
0.2 KM · Quintana Pet. Corp. · Section with this well →
| Surface Sand Clay | 1,500 | -1,443 |
| Lagarto | 1,500 | -1,443 |
| Oakville | 2,750 | -2,693 |
| Catahoula | 3,300 | -3,243 |
| Catahoula | 3,543 | -3,486 |
| Anahuac | 4,100 | -4,043 |
| Frio | 4,358 | -4,301 |
| Anahauc | 4,365 | -4,308 |
18 TOPS · FIRST 8
Tom O'Connor (5800 SD) FLD Unit42-391-31248
0.3 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,441 |
| Oakville | 2,750 | -2,691 |
| Catahoula | 3,300 | -3,241 |
| Catahoula | 3,300 | -3,241 |
| Anahuac | 4,100 | -4,041 |
| Frio | 4,362 | -4,303 |
| Frio | 4,365 | -4,306 |
| Frio | 5,000 | -4,941 |
10 TOPS · FIRST 8
Clement Heard 4242-391-33211
0.3 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,544 | -3,491 |
| Frio | 4,320 | -4,267 |
| Jackson | — |
Clement Heard 4142-391-33207
0.4 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,528 | -3,474 |
| Frio | 4,316 | -4,262 |
| Jackson | — |
Heard, Clement42-391-32518
0.4 KM · Hilcorp Energy Company · Section with this well →
| Lagarto | 2,750 | -2,692 |
| Oakville | 3,300 | -3,242 |
| Catahoula | 3,560 | -3,502 |
| Catahoula | 3,563 | -3,505 |
| Frio | 4,316 | -4,258 |
| Anahuac | 4,365 | -4,307 |
| Ananhuac | 4,365 | -4,307 |
| Anahuac | 4,365 | -4,307 |
14 TOPS · FIRST 8
Thomas O'Connor -C-42-391-01132
0.4 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,442 |
| Oakville | 2,750 | -2,692 |
| Catahoula | 3,300 | -3,242 |
| Catahoula | 3,563 | -3,505 |
| Anahuac | 4,100 | -4,042 |
| Anahuac | 4,100 | -4,042 |
| Frio | 4,322 | -4,264 |
| Frio | 4,365 | -4,307 |
12 TOPS · FIRST 8
Tom O'Connor (4150 Ft. Sd.) Unit42-391-32533
0.4 KM · Hilcorp Energy Company · Section with this well →
| Lagarto | 2,750 | -2,692 |
| Oakville | 3,300 | -3,242 |
| Catahoula | 3,566 | -3,508 |
| Catahoula | 4,100 | -4,042 |
| Catahoula | 4,100 | -4,042 |
| Greta | 4,300 | -4,242 |
| Frio | 4,318 | -4,260 |
| Anahuac | 4,365 | -4,307 |
14 TOPS · FIRST 8
Thomas O'Connor 'C'42-391-01158
0.4 KM · Hilcorp Energy Company · Section with this well →
| Oakville | 2,900 | -2,848 |
| Catahoula | 3,548 | -3,496 |
| Anahuac | 4,100 | -4,048 |
| Greta | 4,300 | -4,248 |
| Frio | 4,330 | -4,278 |
| Frio | 5,000 | -4,948 |
| Frio | 5,800 | -5,748 |
| Jackson | — |
9 TOPS · FIRST 8
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/39131609, documented in the API reference.