TEXAS · WELLS · BURLESON COUNTY · JUNEK-MAREK UNIT LEASE · API 42-051-31458 · DISTRICT 03
Junek-Marek Unit #1
Burleson County · Giddings (Austin Chalk-3) field · Producing · Horizontal · Sidetrack
Junek-Marek Unit #1 (API 42-051-31458) is a horizontal well in Burleson County operated by Wildfire Energy Operating LLC, completed August 29, 1996 and listed as producing on the RRC schedule.
The RRC has issued 3 drilling permits (amended twice) between 1981 and 1996, permitted to 10,455 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 one formation top, including Austin Chalk.
Its lease has reported 86.2K barrels of oil and 865K mcf of gas since January 1993, last reporting volume in February 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 Feb 2026 |
| Latest permit | Union Pacific Resources CompanyAug 7, 1996 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,455
- total depth, ft
- 5
- permits on file
- Aug 7, 1996
- last permit issued
- Aug 29, 1996
- completed
- 86.2K
- cumulative oil, bbl
- 865K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 29, 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 |
|---|---|---|---|---|---|---|
| Junek-Marek Unit O-3-14167 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | 1 | 86.2K | 865K | Jan 1993 – Feb 2026 |
Oil, barrels lease total
Last 12 months 1 · prior 12 49(-98%)
Gas, mcf lease total
Last 12 months 0 · prior 12 57(-100%)
Chain 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 2023
- 7Wildfire Energy Operating LLCOct 2023 → Feb 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 451215-97 | Recompletion · sidetrack | Union Pacific Resources Company | Oct 28, 1996 | Aug 7, 1996 | — | 8,300 |
| 451215-98 | Recompletion · sidetrack | Union Pacific Resources Company | Aug 28, 1996 | Aug 7, 1996 | — | 8,300 |
| 451215-99 | Recompletion · sidetrack | Union Pacific Resources Company | Aug 7, 1996 | Aug 7, 1996 | Aug 10, 1996 | 8,300 |
| 405244-99 | Recompletion | Union Pacific Resources Company | Oct 27, 1992 | Nov 13, 1992 | — | 8,781 |
| 112927-99 | Drill | Champlin Petroleum Co. | Mar 23, 1981 | Mar 23, 1981 | Apr 7, 1981 | 8,950 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 29, 1996 | Junek-Marek Unit O-3-14167 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | Producing | 10,455 |
| Aug 29, 1996 | Junek-Marek Unit O-3-14167 | Giddings (Austin Chalk-3) | Wildfire Energy Operating LLC | Producing | 10,455 |
Formation tops
As filed on W-2/G-1. Subsea from 343 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 7,655 | -7,312 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,782 | 10,400 | Perforated |
| 7,944 | 8,122 | Perforated |
| 8,114 | 10,455 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,830 | 12.25 | 1,350 S |
| 2.375 | 7,840 | — | — |
| 5.5 | 8,786 | 8.75 | 1,030 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 | Oct 7, 1997 | Oct 28, 1997 | Yes |
| 00 | Jan 12, 1984 | May 13, 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 42-051-31458 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-051-31458 → 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/05131458, documented in the API reference.