WELL · 42-481-34610 · DISTRICT 3
Hlavinka #1
Wharton County · Spanish Camp South (3700) field · Vertical
Hlavinka #1 (API 42-481-34610) is a well in Wharton County operated by Allegro Investments Inc., completed June 14, 2004.
The RRC has issued 2 drilling permits between 2004 and 2006, permitted to 5,000 ft.
Completion filings report 2 formation tops, including Miocene (undifferentiated), Catahoula.
Its 3 leases have reported 184K barrels of oil and 323K mcf of gas since June 2004, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Victoria, TX · P-5 Y, filed Oct 2, 2020 · 298 permits on file · (361) 573-5619
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Allegro Investments Inc. |
| Production reports | Charolais Energy, LLCthrough Mar 2026 |
| Latest permit | Allegro Investments, Inc.Oct 27, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,000
- total depth, ft
- 2
- permits on file
- Oct 27, 2006
- last permit issued
- Jun 14, 2004
- completed
- 184K
- cumulative oil, bbl
- 323K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2004 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 14, 2004
- 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 3 leases this well is completed on; they carry 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Hlavinka O-3-24654 | Spanish Camp, N. (3268) | Charolais Energy, LLC | 4 | 184K | 6.74K | Jan 2005 – Jul 2026 |
| Hlavinka G-3-203430 | Spanish Camp, South (3700) | Allegro Investments, Inc. | 1 | 0 | 90.3K | Jun 2004 – Sep 2006 |
| Hlavinka G-3-203431 | Spanish Camp (Hungerford 2800) | Allegro Investments, Inc. | 1 | 0 | 226K | Jun 2004 – Sep 2006 |
Oil, barrels lease total
Last 12 months 2,212 · prior 12 1,502(+47%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Allegro Investments, Inc.Jun 2004 → Aug 2009
- 2Sue-Ann Operating, L.C.Sep 2009 → Oct 2009
- 3JMM Energy LLCNov 2009 → Feb 2021
- 4Howard Exploration, Inc.Oct 2022 → Dec 2025
- 5Charolais Energy, LLCJan 2026 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 628212-99 | Recompletion | Allegro Investments, Inc. | Oct 27, 2006 | Oct 27, 2006 | Sep 21, 2006 | 3,664 |
| 540941-99 | Drill | Allegro Investments, Inc. | Jan 20, 2004 | Jan 20, 2004 | Mar 11, 2004 | 5,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-203430 | — | — | — | — |
| — | — G-3-203431 | — | — | — | — |
| — | — O-3-24654 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 119 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE (BASE) | 2,090 | -1,971 |
| CatahoulaCATAHOULA (TOP) | 3,260 | -3,141 |
| CatahoulaCATAHOULA (BASE) | 3,550 | -3,431 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,867 | 2,880 | Perforated |
| 3,262 | 3,266 | Perforated |
| 3,754 | 3,756 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,724 | 13.5 | 620 S |
| 5.5 | 4,050 | 7.875 | 565 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 | Mar 29, 2007 | Nov 10, 2006 | Yes |
| 00 | Dec 1, 2006 | — | — |
| 00 | Nov 3, 2004 | Aug 20, 2004 | Yes |
| 00 | Nov 2, 2004 | Aug 20, 2004 | Yes |
| 00 | Sep 27, 2004 | — | — |
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 42-481-34610 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-481-34610 → 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/48134610, documented in the API reference.