WELL · 42-391-00427 · DISTRICT 2
Williams Maude et al -A- #A 19
Refugio County · Tom Oconnor (5900 Sand) field · Vertical
Williams Maude ET AL -A- #A 19 (API 42-391-00427) is a well in Refugio County operated by Hilcorp Energy Company, completed October 4, 1972.
The RRC has issued 3 drilling permits between 1979 and 2015, permitted to 5,923 ft.
Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 3 leases have reported 24.2M barrels of oil and 16.1M mcf of gas since January 1993, last reporting in July 2026. The leases carry 642 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 228K barrels injected in the 12 months reported through November 2025.
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 CompanySep 17, 2015 |
- 5,923
- total depth, ft
- 3
- permits on file
- Sep 17, 2015
- last permit issued
- Oct 4, 1972
- completed
- 24.2M
- cumulative oil, bbl
- 16.1M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 4, 1972
- 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 642 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Williams, Maude, et al -A- O-2-2878 | Tom Oconnor (5900 Sand) | Hilcorp Energy Company | 10 | 441K | 369K | 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 |
| Tom O'Connor (5730 Ft. Sd.) Unit O-2-8569 | Tom O'Connor (5730, East) | Hilcorp Energy Company | 38 | 1.01M | 815K | Oct 2000 – Jul 2026 |
Oil, barrels lease total
Last 12 months 686,927 · prior 12 546,584(+26%)
Gas, mcf lease total
Last 12 months 118,482 · prior 12 85,317(+39%)
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 |
|---|---|---|---|---|---|---|
| 810192-99 | Recompletion | Hilcorp Energy Company | Sep 9, 2015 | Sep 17, 2015 | Sep 23, 2015 | 5,923 |
| 408752-99 | Recompletion | Quintana Pet. Corp. | Feb 4, 1993 | Feb 9, 1993 | Feb 3, 1993 | 5,923 |
| 51859-99 | Recompletion | Quintana Pet. Corp. | Jun 29, 1979 | Jun 29, 1979 | — | 5,923 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-2878 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-8569 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 57 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LagartoLARGARTO | 1,500 | -1,443 |
| Oakville | 2,750 | -2,693 |
| CatahoulaCATAHOULA (MIOCENE) | 3,300 | -3,243 |
| Catahoula | 3,607 | -3,550 |
| AnahuacANAHUAC (MIOCENE) | 4,100 | -4,043 |
| Frio | 4,361 | -4,304 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,308 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,943 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,823 |
| JacksonJACKSON/YEGUA | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,584 | 5,593 | Perforated |
| 5,657 | 5,663 | Perforated |
| 5,660 | 5,666 | Perforated |
| 5,767 | 5,782 | Perforated |
| 5,851 | 5,860 | Perforated |
| 5,868 | 5,874 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,071 | 16 | 350 S |
| 1.5 | 5,554 | — | — |
| 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 | Dec 2, 2020 | Nov 12, 2020 | — |
| 00 | Sep 20, 2016 | Sep 9, 2016 | — |
| 00 | Mar 24, 1993 | Feb 18, 1993 | Yes |
| 00 | Mar 1, 1993 | May 17, 1985 | — |
| 00 | Jul 17, 1985 | May 17, 1985 | — |
| 00 | May 25, 1985 | Oct 18, 1972 | — |
| 00 | Jan 12, 1984 | Mar 12, 1980 | — |
| 00 | Jan 12, 1984 | Oct 18, 1972 | — |
| 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 42-391-00427 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00427 → 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
- 228K
- bbl, last 12 reported months
- 1.04M
- bbl, all reported
- Nov 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000123591 | H-1 Injection | Active | 6,000 | 2,600 | 5,659–5,676 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 227,757 · prior 12 213,308(+7%)
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/39100427, documented in the API reference.