WELL · 42-349-34807 · DISTRICT 5
Cerf Eugenia -A- #1SE
Navarro County · Corsicana (Shallow) field · Producing · Vertical
Cerf Eugenia -A- #1SE (API 42-349-34807) is a well in Navarro County operated by KO Operating LLC, completed August 8, 2007 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 21, 2007, permitted to 3,000 ft.
It was permitted by W.E.S. Operating Company, LLC and has since transferred to KO Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Nacatosh, Pecan Gap, Austin Chalk.
Its lease has reported 22.2K barrels of oil and 4.06K mcf of gas since August 2007, last reporting in July 2026.
Operator of record
Permitted by W.E.S. Operating Company, LLC; the EWA schedule now lists a different operator.
Austin, TX · P-5 Y, filed Oct 4, 2025 · (740) 506-0854
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | KO Operating LLC |
| Production reports | KO Operating LLCthrough Mar 2026 |
| Latest permit | W.E.S. Operating Company, LLCMay 21, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,000
- total depth, ft
- 1
- permits on file
- May 21, 2007
- last permit issued
- Aug 8, 2007
- completed
- 22.2K
- cumulative oil, bbl
- 4.06K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 8, 2007
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 |
|---|---|---|---|---|---|---|
| Cerf, Eugenia -A- O-5-3854 | Corsicana (Shallow) | KO Operating LLC | 1 | 22.2K | 4.06K | Aug 2007 – Jul 2026 |
Oil, barrels lease total
Last 12 months 318 · prior 12 481(-34%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1W.E.S. Operating Company, LLCAug 2007 → Sep 2011
- 2Thurston Texas Operating Co LLCFeb 2012 → Jun 2016
- 3Iskandia Energy Operating, Inc.Jan 2017 → Sep 2024
- 4KO Operating LLCOct 2024 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 639084-99 | Drill | W.E.S. Operating Company, LLC | May 15, 2007 | May 21, 2007 | Jun 14, 2007 | 3,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-5-3854 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 430 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Nacatosh | 1,309 | -879 |
| Pecan Gap | 2,072 | -1,642 |
| Austin Chalk | 2,220 | -1,790 |
| Austin Chalk | — | — |
| Nacatosh | — | — |
| Pecan Gap | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,273 | 2,452 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 203 | 12.25 | 100 S |
| 4.5 | 2,548 | 7.875 | 442 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 | Jan 8, 2008 | Nov 13, 2007 | — |
| 00 | Nov 8, 2007 | Oct 16, 2007 | Yes |
| 00 | Nov 2, 2007 | — | — |
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 42-349-34807 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-349-34807 → 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/34934807, documented in the API reference.