WELL · 42-391-00420 · DISTRICT 2
Williams Maude et al -A- #W806B
Refugio County · Tom Oconnor (5900 Sand) field · Vertical
Williams Maude ET AL -A- #W806B (API 42-391-00420) is a disposal or injection well in Refugio County operated by Hilcorp Energy Company under an active UIC permit.
The RRC has issued 4 drilling permits between 1984 and 2020, permitted to 5,923 ft.
Completion filings report 6 formation tops, including Lagarto, Oakville, Catahoula, Anahuac.
Its 3 leases have reported 23.9M barrels of oil and 15.3M mcf of gas since January 1993, last reporting in July 2026. The leases carry 653 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit; TexNet located 0 M2+ earthquakes within 10 km over the last two years.
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 CompanyJan 23, 2020 |
- 5,923
- total depth, ft
- 4
- permits on file
- Jan 23, 2020
- last permit issued
- —
- completed
- 23.9M
- cumulative oil, bbl
- 15.3M
- 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
28.390567, -97.126891
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 3 leases this well is completed on; they carry 653 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 |
| Tom O'CONNOR(5600 Foot Sand)unit O-2-8950 | Tom O'Connor (5600 Foot Sand) | Hilcorp Energy Company | 59 | 1.13M | 357K | Mar 2005 – Jul 2026 |
| — G-2-124036 | — | — | 0 | 0 | 0 | — |
Oil, barrels lease total
Last 12 months 684,603 · prior 12 537,324(+27%)
Gas, mcf lease total
Last 12 months 117,715 · prior 12 83,839(+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 |
|---|---|---|---|---|---|---|
| 860882-99 | Recompletion | Hilcorp Energy Company | Jan 13, 2020 | Jan 23, 2020 | Jan 5, 1939 | 5,923 |
| 357395-99 | Recompletion | Quintana Pet. Corp. | Mar 24, 1989 | Apr 24, 1989 | — | 5,923 |
| 326668-99 | Recompletion | Quintana Pet. Corp. | Feb 17, 1987 | Feb 18, 1987 | — | 5,923 |
| 231564-99 | Recompletion | Quintana Pet. Corp. | Nov 19, 1984 | Mar 5, 1984 | — | 5,923 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-124036 | — | — | — | — |
| — | — O-2-5280 | — | — | — | — |
| — | — O-2-8950 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 54 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LagartoLARGARTO | 1,500 | -1,446 |
| Oakville | 2,750 | -2,696 |
| CatahoulaCATAHOULA (MIOCENE) | 3,300 | -3,246 |
| CatahoulaCATAHOULA(MIOCENE) | 3,300 | -3,246 |
| Catahoula | 3,578 | -3,524 |
| AnahuacANAHUAC (MIOCENE) | 4,100 | -4,046 |
| AnahuacANAHUAC(MIOCENE) | 4,100 | -4,046 |
| Frio | 4,338 | -4,284 |
| FrioFRIO-GRETA (OLIGOCENE) | 4,365 | -4,311 |
| FrioFRIO-GRETA(OLIGOCENE) | 4,365 | -4,311 |
| FrioFRIO-GRETA(SINTON) | 5,000 | -4,946 |
| FrioMIDDLE FRIO (SINTON) | 5,000 | -4,946 |
| FrioLOWER FRIO (OLIGOCENE) | 5,880 | -5,826 |
| JacksonJACKSON/YEGUA | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,073 | 5,085 | Perforated |
| 5,584 | 5,606 | Perforated |
| 5,754 | 5,772 | Perforated |
| 5,788 | 5,795 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,060 | 16 | 350 S |
| 5 | 5,922 | 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, 2020 | Jan 29, 2020 | — |
| 00 | Oct 1, 1996 | Aug 27, 1996 | — |
| 00 | Mar 12, 1990 | Jan 26, 1990 | Yes |
| 00 | May 27, 1987 | Mar 23, 1987 | Yes |
| 00 | May 19, 1987 | — | — |
| 00 | Jan 22, 1985 | Dec 14, 1984 | — |
| 00 | Jan 10, 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 42-391-00420 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-00420 → 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(5600 Foot Sand)un42-391-00560
0.3 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,447 |
| Oakville | 2,750 | -2,697 |
| Catahoula | 3,300 | -3,247 |
| Catahoula | 3,543 | -3,490 |
| Catahoula | 4,100 | -4,047 |
| Anahuac | 4,100 | -4,047 |
| Frio | 4,331 | -4,278 |
| Frio | 4,365 | -4,312 |
13 TOPS · FIRST 8
Mrs. Fannie V. W. Heard42-391-00558
0.4 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,447 |
| Oakville | 2,750 | -2,697 |
| Catahoula | 3,300 | -3,247 |
| Anahuac | 4,100 | -4,047 |
| Frio | 4,365 | -4,312 |
| Frio | 4,365 | -4,312 |
| Frio | 5,000 | -4,947 |
| Frio | 5,000 | -4,947 |
10 TOPS · FIRST 8
Heard, Mrs Fannie V.W.42-391-00563
0.6 KM · Hilcorp Energy Company · Section with this well →
| Lagarto | 1,500 | -1,441 |
| Oakville | 2,750 | -2,691 |
| Catahoula | 3,300 | -3,241 |
Heard, Fannie V. W., Mrs.42-391-00562
0.7 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,556 | -3,526 |
| Frio | 4,346 | -4,316 |
| Jackson | — |
Tom O'Connor (5800SAND) FLD Unit42-391-00566
0.7 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,446 |
| Oakville | 2,750 | -2,696 |
| Catahoula | 3,300 | -3,246 |
| Catahoula | 3,577 | -3,523 |
| Anahuac | 4,100 | -4,046 |
| Greta | 4,150 | -4,096 |
| Frio | 4,324 | -4,270 |
| Frio | 4,365 | -4,311 |
15 TOPS · FIRST 8
Heard, Fannie V. W., Mrs.42-391-33203
0.7 KM · Hilcorp Energy Company · Section with this well →
| Catahoula | 3,578 | -3,529 |
| Frio | 4,321 | -4,272 |
| Jackson | — |
Williams, Maude et al "A"42-391-00470
0.8 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
Tom Oconnor (5800 SD) Fld. Unit42-391-00727
0.8 KM · Quintana Pet. Corp. · Section with this well →
| Lagarto | 1,500 | -1,445 |
| Oakville | 2,750 | -2,695 |
| Catahoula | 3,300 | -3,245 |
| Catahoula | 3,568 | -3,513 |
| Anahuac | 4,100 | -4,045 |
| Frio | 4,318 | -4,263 |
| 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
- 1.8M
- bbl, all reported
- Nov 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000051623 | H-1 Injection | Active | 2,750 | 2,535 | 5,070–5,800 |
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/39100420, documented in the API reference.