WELL · 42-391-00504 · DISTRICT 2
Williams Maude et al B #4W
Refugio County · Tom Oconnor (5900 Sand) field · Vertical
Williams Maude ET AL B #4W (API 42-391-00504) is a well in Refugio County operated by Hilcorp Energy Company, completed May 19, 1995.
The RRC has issued 6 drilling permits (amended once) between 1991 and 2016, permitted to 5,928 ft.
Completion filings report 7 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 7 leases have reported 23.9M barrels of oil and 16M mcf of gas since January 1993, last reporting in July 2026. The leases carry 657 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 CompanyApr 27, 2016 |
- 5,928
- total depth, ft
- 7
- permits on file
- Apr 27, 2016
- last permit issued
- May 19, 1995
- completed
- 23.9M
- cumulative oil, bbl
- 16M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 19, 1995
- 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 7 leases this well is completed on; they carry 657 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Williams, Maude, Etal -B- O-2-1546 | Tom Oconnor | Hilcorp Energy Company | 10 | 67.9K | 115K | 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 Etal -B- O-2-5525 | Tom Oconnor (5625 Sand) | Hilcorp Energy Company | 6 | 6.9K | 8.95K | 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 |
| Maude Williams et al 'B' O-2-11161 | Tom Oconnor (5500 Sand) | Hilcorp Energy Company | 3 | 17.1K | 8.96K | Nov 2015 – Jul 2026 |
| Williams, Maude et al "B" O-2-7714 | Tom Oconnor (5900 Sand) | Hilcorp Energy Company | 5 | 40.8K | 109K | Jan 1993 – Dec 2018 |
| Williams, Maude et al "B" O-2-8170 | Tom Oconnor (5500 Sand) | Hilcorp Energy Company | 1 | 182 | 1.01K | Mar 1996 – Mar 2002 |
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 85,314(+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 |
|---|---|---|---|---|---|---|
| 815254-99 | Recompletion | Hilcorp Energy Company | Apr 25, 2016 | Apr 27, 2016 | — | 5,928 |
| 537461-99 | Recompletion | Hilcorp Energy Company | Oct 13, 2003 | Oct 17, 2003 | Mar 23, 2004 | 5,928 |
| 501723-99 | Recompletion | Quintana Pet. Corp. | Nov 8, 2000 | Dec 13, 2000 | Jan 2, 2001 | 5,928 |
| 445062-99 | Recompletion | Quintana Pet. Corp. | Feb 21, 1996 | Mar 4, 1996 | Feb 29, 1996 | 5,928 |
| 437396-99 | Recompletion | Quintana Pet. Corp. | Jun 29, 1995 | Jun 30, 1995 | May 16, 1995 | 5,928 |
| 388755-98 | Recompletion | Quintana Pet. Corp. | Sep 30, 1991 | Jun 11, 1991 | Aug 5, 1991 | 5,928 |
| 388755-99 | Recompletion | Quintana Pet. Corp. | Jun 7, 1991 | Jun 11, 1991 | — | 5,928 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-1546 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-5525 | — | — | — | — |
| — | — O-2-7714 | — | — | — | — |
| — | — O-2-8170 | — | — | — | — |
| — | — O-2-8569 | — | — | — | — |
| — | — O-2-11161 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 58 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LagartoLARGARTO | 1,500 | -1,442 |
| Oakville | 2,750 | -2,692 |
| CatahoulaCATAHOULA (MIOCENE) | 3,300 | -3,242 |
| CatahoulaCATAHOULA(MIOCENE) | 3,300 | -3,242 |
| Catahoula | 3,645 | -3,587 |
| AnahuacANAHUAC (MIOCENE) | 4,100 | -4,042 |
| AnahuacANAHUAC(MIOCENE) | 4,100 | -4,042 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,307 |
| FrioFRIO-GRETA(OLIGOCENE) | 4,365 | -4,307 |
| Frio | 4,403 | -4,345 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,942 |
| FrioLOWER FRIO (OLIGOCENE) | 5,800 | -5,742 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,822 |
| JacksonJACKSON/YEGUA | — | — |
| NO Change | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,554 | 5,560 | Perforated |
| 5,566 | 5,569 | Perforated |
| 5,630 | 5,645 | Perforated |
| 5,642 | 4,546 | Perforated |
| 5,720 | 5,729 | Perforated |
| 5,888 | 5,892 | Perforated |
| 5,900 | 5,914 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,036 | 16 | 350 S |
| 5 | 5,926 | 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 | May 25, 2017 | May 15, 2017 | — |
| 00 | Jul 29, 2005 | Apr 20, 2005 | — |
| 00 | May 10, 2005 | Apr 6, 2001 | — |
| 00 | Dec 11, 2001 | Apr 6, 2001 | — |
| 00 | Nov 19, 2001 | May 22, 1996 | Yes |
| 00 | Jul 22, 1996 | May 22, 1996 | Yes |
| 00 | Jun 3, 1996 | Jul 25, 1995 | Yes |
| 00 | Aug 18, 1995 | Jul 25, 1995 | Yes |
| 00 | Aug 1, 1995 | — | — |
| 00 | Feb 27, 1992 | Jan 22, 1992 | Yes |
| 00 | Jan 28, 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 42-391-00504 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00504 → 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
- 535K
- bbl, last 12 reported months
- 5.63M
- bbl, all reported
- Sep 2016
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000090296 | H-1 Injection | Canceled Jun 2, 2017 | 10,000 | 2,000 | 5,610–5,645 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 535,260 · prior 12 406,178(+32%)
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/39100504, documented in the API reference.