WELL · 42-013-31773 · DISTRICT 1
Waltom Lillian #1
Atascosa County · Velma (ESCONDID0) field · Vertical
Waltom Lillian #1 (API 42-013-31773) is a plugged well in Atascosa County, plugged August 20, 2019, last operated by Core E & P Corp..
The RRC has issued one drilling permit, issued December 13, 1982, permitted to 4,800 ft.
It was permitted by Tomlinson Oil CO., Inc. and has since transferred to Core E & P Corp. on the wellbore schedule.
Its lease has reported 8.92K barrels of oil and 363 mcf of gas since January 1993, last reporting in July 2026. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Tomlinson Oil Co., Inc.; the EWA schedule now lists a different operator.
Victoria, TX · P-5 Y, filed Apr 4, 2026 · 7 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Core E & P Corp. |
| Production reports | Core E & P Corp.through Aug 2002 |
| Latest permit | Tomlinson Oil Co., Inc.Dec 13, 1982 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,800
- total depth, ft
- 1
- permits on file
- Dec 13, 1982
- last permit issued
- Dec 21, 1982
- completed
- 8.92K
- cumulative oil, bbl
- 363
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 21, 1982
- Shut in
- —
- Plugged
- Aug 20, 2019
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; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Waltom, Lillian O-1-8687 | Velma (ESCONDID0) | Core E & P Corp. | 3 | 8.92K | 363 | Jan 1993 – Jul 2026 |
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.
- 1Hayden Ranch and Dev. Corp.Jan 1993 → Dec 1993
- 2Jab Operating, Inc.Jan 1994 → Mar 1999
- 3Core Energy CorporationMay 1999 → Jun 1999
- 4Core E & P Corp.Jul 1999 → Aug 2002
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 183930-99 | Drill | Tomlinson Oil Co., Inc. | Dec 13, 1982 | Dec 13, 1982 | — | 4,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-8687 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,689 | 4,704 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 335 | 12.25 | 215 S |
| 2.375 | 4,650 | — | — |
| 4.5 | 4,783 | 7.875 | 1,170 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 12, 1984 | Feb 17, 1983 | — |
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 42-013-31773 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-013-31773 → 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/01331773, documented in the API reference.