WELL · 42-391-00428 · DISTRICT 2
Williams Maude et al -A- #20
Refugio County · Tom Oconnor (5900 Sand) field · Vertical
Williams Maude ET AL -A- #20 (API 42-391-00428) is a permitted well in Refugio County filed by Hilcorp Energy Company; no completion report is on file yet.
The RRC has issued 4 drilling permits (amended once) between 1995 and 2015, permitted to 5,925 ft.
Completion filings report 7 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 4 leases have reported 23.1M barrels of oil and 15.5M mcf of gas since January 1993, last reporting in July 2026. The leases carry 606 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 | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Hilcorp Energy CompanyNov 12, 2015 |
- 5,925
- total depth, ft
- 5
- permits on file
- Nov 12, 2015
- last permit issued
- —
- completed
- 23.1M
- cumulative oil, bbl
- 15.5M
- 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
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 4 leases this well is completed on; they carry 606 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Williams, Maude, Etal, -A- O-2-2589 | Tom Oconnor (5500 Sand) | Hilcorp Energy Company | 9 | 323K | 573K | 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 |
| Williams, Maude et al -A- O-2-9170 | Tom Oconnor (5425 Sand) | Hilcorp Energy Company | 2 | 143 | 2.51K | Oct 2007 – Jul 2026 |
| Maude Williams et al -A- O-2-11162 | Tom Oconnor (5200, East) | Hilcorp Energy Company | 1 | 10.2K | 2.91K | Dec 2015 – Jul 2026 |
Oil, barrels lease total
Last 12 months 673,763 · prior 12 526,253(+28%)
Gas, mcf lease total
Last 12 months 117,585 · prior 12 84,184(+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 |
|---|---|---|---|---|---|---|
| 811711-99 | Recompletion | Hilcorp Energy Company | Nov 4, 2015 | Nov 12, 2015 | Oct 1, 2015 | 5,925 |
| 689910-99 | Recompletion | Hilcorp Energy Company | Jan 18, 2010 | Jan 28, 2010 | Mar 26, 2010 | 5,925 |
| 638226-98 | Recompletion | Hilcorp Energy Company | Dec 12, 2007 | May 15, 2007 | Dec 17, 2007 | 5,925 |
| 638226-99 | Recompletion | Hilcorp Energy Company | May 2, 2007 | May 15, 2007 | — | 5,925 |
| 439594-99 | Recompletion | Quintana Pet. Corp. | Sep 5, 1995 | Sep 12, 1995 | Oct 9, 1995 | 5,925 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-2589 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-9170 | — | — | — | — |
| — | — O-2-11162 | — | — | — | — |
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 |
| CatahoulaCATAHOULA MIOCENE | 3,300 | -3,243 |
| Catahoula | 3,598 | -3,541 |
| AnahuacANAHUAC (MIOCENE) | 4,100 | -4,043 |
| AnahuacANAHUAC MIOCENE | 4,100 | -4,043 |
| Frio | 4,356 | -4,299 |
| FrioFRIO GRETA OLIGOCENE | 4,365 | -4,308 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,308 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,943 |
| FrioMIDDLE FRIO SINTON | 5,000 | -4,943 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,823 |
| FrioLOWER FRIO OLIGOCENE | 5,880 | -5,823 |
| JacksonJACKSON/YEGUA | — | — |
| NO Change | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,138 | 5,143 | Perforated |
| 5,203 | 5,211 | Perforated |
| 5,444 | 5,452 | Perforated |
| 5,531 | 5,537 | Perforated |
| 5,734 | 5,742 | Perforated |
| 5,753 | 5,758 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,009 | 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 20, 2016 | Dec 29, 2015 | — |
| 00 | Oct 5, 2010 | Aug 16, 2010 | Yes |
| 00 | Sep 15, 2010 | — | — |
| 00 | Apr 14, 2008 | Jan 14, 2008 | Yes |
| 00 | Mar 17, 2008 | — | — |
| 00 | Mar 25, 1996 | Dec 18, 1995 | Yes |
| 00 | Feb 23, 1996 | May 17, 1985 | — |
| 00 | Jun 7, 1985 | May 17, 1985 | — |
| 00 | May 29, 1985 | — | — |
| 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 42-391-00428 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00428 → 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/39100428, documented in the API reference.