WELL · 42-391-00528 · DISTRICT 2
Tom O'CONNOR(5600 Foot Sand)unit #W931B
Refugio County · Vertical
Tom O'Connor(5600 Foot Sand)Unit #W931B (API 42-391-00528) is a former disposal or injection well in Refugio County, last operated by Hilcorp Energy Company; its UIC permit is no longer active.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 3 drilling permits between 1979 and 2019, permitted to 6,008 ft.
Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 2 leases have reported 22.9M barrels of oil and 15.1M mcf of gas since January 1993, last reporting in July 2026. The leases carry 602 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 | none |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Hilcorp Energy CompanyMar 19, 2019 |
- 6,008
- total depth, ft
- 3
- permits on file
- Mar 19, 2019
- last permit issued
- —
- completed
- 22.9M
- cumulative oil, bbl
- 15.1M
- 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
28.409623, -97.115842
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 2 leases this well is completed on; they carry 602 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Tom Oconnor (5800 SD) Fld. Unit O-2-5280 | Tom Oconnor (5800) | Hilcorp Energy Company | 594 | 22.8M | 14.9M | Jan 1993 – Jul 2026 |
| Williams, Maude Etal -B- O-2-5559 | Tom Oconnor (5650' Sand) | Hilcorp Energy Company | 8 | 73.5K | 156K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 673,200 · prior 12 524,408(+28%)
Gas, mcf lease total
Last 12 months 117,526 · prior 12 83,712(+40%)
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 |
|---|---|---|---|---|---|---|
| 851167-99 | Recompletion | Hilcorp Energy Company | Mar 18, 2019 | Mar 19, 2019 | — | 6,008 |
| 460304-99 | Recompletion | Quintana Pet. Corp. | Mar 25, 1997 | Apr 18, 1997 | Jun 4, 1997 | 6,008 |
| 49371-99 | Recompletion | Quintana Pet. Corp. | May 25, 1979 | May 25, 1979 | Sep 28, 1979 | 6,008 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-5559 | — | — | — | — |
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 |
|---|---|---|
| 5,676 | 5,682 | Perforated |
| 5,685 | 5,690 | Perforated |
| 5,851 | 5,859 | Perforated |
| 5,852 | 5,858 | Perforated |
| — | 5,660 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,014 | 12.25 | 375 S |
| 1.5 | 5,801 | — | — |
| 2.875 | 5,999 | 7.875 | 900 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 11, 2001 | Mar 19, 2001 | — |
| 00 | Dec 20, 2000 | Oct 23, 2000 | — |
| 00 | Nov 7, 2000 | — | — |
| 00 | Dec 10, 1984 | Nov 13, 1984 | — |
| 00 | Jan 12, 1984 | Oct 14, 1981 | — |
| 00 | Jan 12, 1984 | Nov 26, 1976 | — |
| 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 42-391-00528 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00528 → 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 (5800 SD) Fld. Unit42-391-00519
0.8 KM · Hilcorp Energy Company · Section with this well →
| Surface SD Clay | 1,500 | -1,440 |
| Lagarto | 2,750 | -2,690 |
| Oakville | 3,300 | -3,240 |
| Catahoula | 3,697 | -3,637 |
| Anahuac | 4,365 | -4,305 |
| Frio | 4,441 | -4,381 |
| Frio | 4,785 | -4,725 |
| Frio | 5,400 | -5,340 |
10 TOPS · FIRST 8
Tom O'CONNOR(5600 Foot Sand)unit42-391-80645
0.9 KM · Hilcorp Energy Company · Section with this well →
| Lagarto | 2,750 | -2,695 |
| Catahoula | 3,300 | -3,245 |
| Frio | 4,265 | -4,210 |
Williams, Maude, et al -B-42-391-00529
1.0 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 11 | 49 |
| Frio | 11 | 49 |
| Oakville | 2,750 | -2,690 |
| Jackson | — |
Williams, Maude, et al -A-42-391-00488
1.4 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,445 |
| Surface Sand Clay | 1,500 | -1,445 |
| Oakville | 2,750 | -2,695 |
| Catahoula | 3,300 | -3,245 |
| Catahoula | 3,612 | -3,557 |
| Catahoula | 4,100 | -4,045 |
| Anahuac | 4,100 | -4,045 |
| Anahuac | 4,365 | -4,310 |
18 TOPS · FIRST 8
Heard Claude E., et AL42-391-00546
1.4 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,617 | -3,559 |
| Frio | 4,374 | -4,316 |
| Jackson | — |
Williams, Maude et al "A"42-391-00448
1.5 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,445 |
| Oakville | 2,750 | -2,695 |
| Catahoula | 3,300 | -3,245 |
| Catahoula | 3,603 | -3,548 |
| Anahuac | 4,100 | -4,045 |
| Frio | 4,361 | -4,306 |
| Frio | 4,365 | -4,310 |
| Frio | 5,000 | -4,945 |
11 TOPS · FIRST 8
Williams, Maude et al -A-42-391-00455
1.7 KM · Hilcorp Energy Company · Section with this well →
| Surface Sand Clay | 1,500 | -1,445 |
| Lagarto | 2,750 | -2,695 |
| Oakville | 3,300 | -3,245 |
| Catahoula | 3,592 | -3,537 |
| Catahoula | 4,100 | -4,045 |
| Catahoula | 4,100 | -4,045 |
| Anahuac | 4,365 | -4,310 |
| Frio | 4,385 | -4,330 |
12 TOPS · FIRST 8
Williams, Maude et al "A"42-391-00470
1.7 KM · Quintana Pet. Corp. · Section with this well →
| Surface Sand & Clay | 1 | 54 |
| Lagarto | 1,500 | -1,445 |
| Lagarto | 1,500 | -1,445 |
| Oakville | 2,750 | -2,695 |
| Catahoula | 3,300 | -3,245 |
| Anahuac | 4,100 | -4,045 |
| Frio | 4,365 | -4,310 |
| Frio | 5,000 | -4,945 |
10 TOPS · FIRST 8
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 1.07M
- bbl, all reported
- Sep 2001
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000051625 | H-1 Injection | Canceled Mar 20, 2006 | 6,000 | 1,500 | 5,851–5,859 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 0
TexNet catalog via USGS
Seismicity near this well
- 0
- M2+ events within 10 km, last 2 years
- —
- largest
A proximity count, not an attribution. How to read it →
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/39100528, documented in the API reference.