TEXAS · WELLS · ZAPATA COUNTY · LEONARDO LEASE · API 42-505-33400 · DISTRICT 04
Leonardo #12
Zapata County · Charco (9200) field · Producing · Vertical
Leonardo #12 (API 42-505-33400) is a well in Zapata County operated by Hilcorp Energy Company, completed April 17, 1996 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued February 12, 1996, permitted to 10,500 ft.
It was permitted by Transtexas Gas Corporation and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report one formation top, including Wilcox.
Its lease has reported 6.18K barrels of oil and 5.91M mcf of gas since April 1996, last reporting volume in April 2026.
Operator of record
Permitted by Transtexas Gas Corporation; 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 | Transtexas Gas CorporationFeb 12, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,500
- total depth, ft
- 2
- permits on file
- Feb 12, 1996
- last permit issued
- Apr 17, 1996
- completed
- 6.18K
- cumulative oil, bbl
- 5.91M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 1996 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 17, 1996
- 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.
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 |
|---|---|---|---|---|---|---|
| Leonardo G-4-158464 | Charco (9200) | Hilcorp Energy Company | 1 | 6.18K | 5.91M | Apr 1996 – Apr 2026 |
Gas, mcf lease total
Last 12 months 39,073 · prior 12 40,468(-3%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Transtexas Gas CorporationApr 1996 → Jun 1996
- 2Houston Exploration Company, TheJul 1996 → Jun 2007
- 3Forest Oil CorporationJul 2007 → Dec 2012
- 4Hilcorp Energy CompanyJan 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 444685-98 | Drill | Transtexas Gas Corporation | May 29, 1996 | Feb 12, 1996 | Mar 9, 1996 | 10,500 |
| 444685-99 | Drill | Transtexas Gas Corporation | Feb 12, 1996 | Feb 12, 1996 | — | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 17, 1996 | Leonardo G-4-158464 | Charco (9200) | Hilcorp Energy Company | Producing | 10,500 |
Formation tops
As filed on W-2/G-1. Subsea from 363 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,340 | 9,470 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 750 | 12.25 | 348 S |
| 7 | 8,189 | 8.75 | 305 S |
| 4.5 | 10,492 | 6.125 | 360 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 16, 1996 | May 29, 1996 | Yes |
| 00 | Jun 13, 1996 | — | — |
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 42-505-33400 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-33400 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/50533400, documented in the API reference.