TEXAS · WELLS · ZAPATA COUNTY · ALFONSO LEASE · API 42-505-34325 · DISTRICT 04
Alfonso #18
Zapata County · Charco (9900) field · Producing · Vertical
- Fields on the latest permit · any of 3
- Charco (9200) · Charco (9400) · Charco (9900)
- Not one formation; the well must be completed in one of them, and no target formation is stated. The district's wildcat field is also on the permit.
Alfonso #18 (API 42-505-34325) is a well in Zapata County operated by Hilcorp Energy Company, completed May 23, 2001 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 10, 2001, permitted to 10,320 ft.
It was permitted by Houston Exploration Company, The and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Its lease has reported 462 barrels of oil and 1.2M mcf of gas since May 2001, last reporting volume in April 2026.
Operator of record
Permitted by Houston Exploration Company, The; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,458
- 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 | Houston Exploration Company, TheApr 10, 2001 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,320
- total depth, ft
- 1
- permits on file
- Apr 10, 2001
- last permit issued
- May 23, 2001
- completed
- 462
- cumulative oil, bbl
- 1.2M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · MAY 2001 THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 23, 2001
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Alfonso G-4-182966 | Charco (9900) | Hilcorp Energy Company | 1 | 462 | 1.2M | May 2001 – Apr 2026 |
Gas, mcf lease total
Last 12 months 15,275 · prior 12 16,027(-5%)
Wells named Alfonso
Hilcorp Energy Company's other wells filed under this lease name in Zapata County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Houston Exploration Company, TheMay 2001 → Jun 2007
- 2Forest Oil CorporationJul 2007 → Dec 2012
- 3Hilcorp Energy CompanyJan 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 507613-99 | Drill | Houston Exploration Company, The | Apr 10, 2001 | Apr 10, 2001 | Apr 25, 2001 | 10,320 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 23, 2001 | Alfonso G-4-182966 | Charco (9900) | Hilcorp Energy Company | Producing | 10,320 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,016 | 10,029 | Perforated |
| 10,098 | 10,103 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 65 | 17.75 | 85 S |
| 10.75 | 786 | 14.75 | 525 S |
| 7 | 8,519 | 8.75 | 400 S |
| 2.875 | 10,289 | 6.25 | 350 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Aug 13, 2001 | Jun 18, 2001 | Yes |
| 00 | Jul 5, 2001 | — | — |
Well logs
The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.
Open the RRC's log search for this well ↗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 42-505-34325 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-34325 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for 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/50534325, documented in the API reference.