TEXAS · WELLS · BURLESON COUNTY · KOSTOHRYZ 105 UNIT LEASE · API 42-051-33771 · DISTRICT 03
Kostohryz 105 Unit #1
Burleson County · Giddings (Eagleford) field · Producing · Horizontal
Kostohryz 105 Unit #1 (API 42-051-33771) is a horizontal well in Burleson County operated by Wildfire Energy Operating LLC, completed May 6, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 20, 2014, permitted to 7,677 ft.
It was permitted by Williams, Clayton Energy, Inc. and has since transferred to Wildfire Energy Operating LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Austin Chalk, Eagle Ford, False Buda, Edwards.
Its lease has reported 413K barrels of oil and 136K mcf of gas since May 2014, last reporting volume in March 2026.
Operator of record
Permitted by Williams, Clayton Energy, Inc.; 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 Mar 2026 |
| Latest permit | Williams, Clayton Energy, Inc.Mar 20, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,677
- total depth, ft
- 1
- permits on file
- Mar 20, 2014
- last permit issued
- May 6, 2014
- completed
- 413K
- cumulative oil, bbl
- 136K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2014 THROUGH Mar 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 6, 2014
- 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 |
|---|---|---|---|---|---|---|
| Kostohryz 105 Unit O-3-27087 | Giddings (Eagleford) | Wildfire Energy Operating LLC | 1 | 413K | 136K | May 2014 – Mar 2026 |
Oil, barrels lease total
Last 12 months 12,583 · prior 12 15,718(-20%)
Gas, mcf lease total
Last 12 months 3,893 · prior 12 3,102(+25%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Williams, Clayton Energy, Inc.May 2014 → Nov 2016
- 2Wildhorse Resources Mngt Co, LLCDec 2016 → May 2019
- 3Chesapeake Operating, L.L.C.Jun 2019 → Feb 2023
- 4Wildfire Energy Operating LLCMar 2023 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 781992-99 | Drill | Williams, Clayton Energy, Inc. | Mar 12, 2014 | Mar 20, 2014 | Mar 22, 2014 | 8,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 6, 2014 | Kostohryz 105 Unit O-3-27087 | Giddings (Eagleford) | Wildfire Energy Operating LLC | Producing | 7,677 |
Formation tops
As filed on W-2/G-1. Subsea from 390 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin ChalkAUSTIN CHALK - DISPOSAL | 6,815 | -6,425 |
| Eagle Ford | 7,354 | -6,964 |
| Eagle FordEAGLEFORD | 7,354 | -6,964 |
| False Buda | 7,591 | -7,201 |
| EdwardsEDWARDS - DISPOSAL | — | — |
| Poth - Disposal | — | — |
| WilcoxWILCOX - DISPOSAL | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,910 | 13,646 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,684 | 12.25 | 1,464 S |
| 7 | 7,398 | 8.75 | 230 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 | Sep 23, 2016 | Aug 10, 2016 | — |
| 00 | Jul 28, 2016 | Jan 19, 2015 | Yes |
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 42-051-33771 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-051-33771 → 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/05133771, documented in the API reference.