TEXAS · WELLS · BURLESON COUNTY · VACLAV HYVL UNIT LEASE · API 42-051-31505 · DISTRICT 03
Vaclav Hyvl Unit #1
Burleson County · Giddings (Austin Chalk-3) field · Shut In · Vertical
- Fields on the latest permit · any of 2
- Caldwell, NE (Georgetown) · Giddings (Buda)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Vaclav Hyvl Unit #1 (API 42-051-31505) is a well in Burleson County operated by Wildfire Energy Operating LLC, completed August 30, 1988 and listed as shut in on the RRC schedule, shut in June 1, 2020.
The RRC has issued 2 drilling permits between 1981 and 1988, permitted to 8,276 ft.
It was permitted by Union Pacific Resources Company and has since transferred to Wildfire Energy Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Austin Chalk, Eagle Ford, False Buda, Buda.
Its lease has reported 52.4K barrels of oil and 246K mcf of gas since the record begins in January 1993, with no volume in the three years through April 2026.
Operator of record
Permitted by Union Pacific Resources Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 24, 2025
- Permits on file
- 171
- Phone
- (832) 558-0100
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Wildfire Energy Operating LLC |
| Production reports | Wildfire Energy Operating LLCthrough Jun 2020 |
| Latest permit | Union Pacific Resources CompanyMay 17, 1988 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,276
- total depth, ft
- 2
- permits on file
- May 17, 1988
- last permit issued
- Aug 30, 1988
- completed
- 52.4K
- cumulative oil, bbl
- 246K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH JUN 2020
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 30, 1988
- Shut in
- Jun 1, 2020
- 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 |
|---|---|---|---|---|---|---|
| Vaclav Hyvl Unit O-3-14250 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | 1 | 52.4K | 246K | by Jan 1993 – Jun 2020 |
No volumes reported on these leases in the last three years.
Wells named Vaclav Hyvl Unit
Wildfire Energy Operating LLC's other wells filed under this lease name in Burleson 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.
- 1Union Pacific Resources CompanyJan 1993 → Jan 2001
- 2Rme Petroleum CompanyFeb 2001 → Nov 2002
- 3Anadarko E&P Company LPDec 2002 → Dec 2012
- 4Anadarko E&P Onshore LLCJan 2013 → Jun 2017
- 5Wildhorse Resources Mngt Co, LLCJul 2017 → May 2019
- 6Chesapeake Operating, L.L.C.Jun 2019 → Feb 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 346616-99 | Recompletion | Union Pacific Resources Company | May 17, 1988 | May 17, 1988 | — | 8,276 |
| 116660-99 | Drill | Champlin Petroleum Co. | Apr 22, 1981 | Apr 22, 1981 | — | 8,450 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 30, 1988 | Vaclav Hyvl Unit O-3-14250 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | Shut In · shut in Jun 1, 2020 | 8,276 |
| Aug 30, 1988 | Vaclav Hyvl Unit O-3-14250 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | Shut In · shut in Jun 1, 2020 | 8,276 |
| Aug 21, 1988 | Vaclav Hyvl Unit O-3-20220 | Giddings (Buda) | Union Pacific Resources Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 373 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 7,476 | -7,103 |
| Eagle FordEAGLEFORD | 7,623 | -7,250 |
| False Buda | 7,903 | -7,530 |
| Buda | 7,940 | -7,567 |
| Georgetown | 8,005 | -7,632 |
| Georgetown | 8,010 | -7,637 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,494 | 7,620 | Perforated |
| 7,848 | 7,980 | Perforated |
| 7,948 | 7,980 | Perforated |
| 8,010 | 8,086 | Perforated |
| 8,112 | 8,160 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,822 | 12.25 | 1,400 S |
| 2.375 | 7,400 | — | — |
| 5.5 | 8,250 | 8.75 | 620 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 | Feb 15, 1989 | Jan 27, 1989 | — |
| 00 | Nov 14, 1988 | Oct 14, 1988 | — |
| 00 | Oct 13, 1988 | Sep 2, 1988 | — |
| 00 | Sep 10, 1988 | — | — |
| 00 | Jan 12, 1984 | Jun 4, 1981 | — |
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 42-051-31505 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-051-31505 → 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/05131505, documented in the API reference.