TEXAS · WELLS · FAYETTE COUNTY · WALTHER OL UNIT LEASE · API 42-149-32711 · DISTRICT 03
Walther OL Unit #1
Fayette County · Giddings (Austin Chalk-3) field · Horizontal
Walther OL Unit #1 (API 42-149-32711) is a plugged horizontal well in Fayette County, plugged December 9, 2011, last operated by Enervest Operating L.L.C..
The RRC has issued one drilling permit, issued November 25, 1992, permitted to 18,300 ft.
It was permitted by Union Pacific Resources Company and has since transferred to Enervest Operating L.L.C. on the wellbore schedule.
Completion filings report 3 formation tops, including Midway, Pecan Gap, Austin Chalk.
Its lease has reported 239K barrels of oil and 811K mcf of gas since January 1993, last reporting in February 2012.
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
- Jan 13, 2026
- Permits on file
- 1,249
- Phone
- (713) 659-3500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Enervest Operating L.L.C. |
| Production reports | Enervest Operating, L.L.C.through Sep 2011 |
| Latest permit | Union Pacific Resources CompanyNov 25, 1992 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 18,300
- total depth, ft
- 1
- permits on file
- Nov 25, 1992
- last permit issued
- Jan 30, 1993
- completed
- 239K
- cumulative oil, bbl
- 811K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Feb 2012
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 30, 1993
- Shut in
- —
- Plugged
- Dec 9, 2011
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 |
|---|---|---|---|---|---|---|
| Walther OL Unit O-3-21905 | Giddings (Austin Chalk-3) | Enervest Operating, L.L.C. | 1 | 239K | 811K | Jan 1993 – Feb 2012 |
No volumes reported on these leases in the last three years.
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 → Aug 2007
- 4Enervest Operating, L.L.C.Sep 2007 → Jul 2011
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 406539-99 | Drill | Union Pacific Resources Company | Nov 24, 1992 | Nov 25, 1992 | Dec 4, 1992 | 18,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 30, 1993 | Walther OL Unit O-3-21905 | Giddings (Austin Chalk-3) | Enervest Operating L.L.C. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 306 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Midway | 6,325 | -6,019 |
| Pecan Gap | 8,738 | -8,432 |
| Austin Chalk | 9,434 | -9,128 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,600 | 13,520 | Perforated |
| 9,630 | 13,090 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 3,768 | 14.75 | 1,325 S |
| 7.625 | 9,630 | 9.875 | 300 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 18, 1993 | Feb 22, 1993 | Yes |
| 00 | Mar 1, 1993 | — | — |
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 42-149-32711 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-149-32711 → 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/14932711, documented in the API reference.