WELL · 42-055-33257 · DISTRICT 1
Larison Unit #1
Caldwell County · Salt Flat field · Producing · Vertical
Larison Unit #1 (API 42-055-33257) is a well in Caldwell County operated by Bastrop Energy Group, completed September 15, 1983 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued August 1, 1983, permitted to 2,750 ft.
It was permitted by Tri-County Operating Company and has since transferred to Bastrop Energy Group on the wellbore schedule.
Its lease has reported 7.28K barrels of oil and 4.18K mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Tri-County Operating Company; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Aug 4, 2025 · 24 permits on file · (210) 492-3096
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Bastrop Energy Group |
| Production reports | Bastrop Energy Groupthrough Apr 2026 |
| Latest permit | Tri-County Operating CompanyAug 1, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,750
- total depth, ft
- 1
- permits on file
- Aug 1, 1983
- last permit issued
- Sep 15, 1983
- completed
- 7.28K
- cumulative oil, bbl
- 4.18K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 15, 1983
- 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 |
|---|---|---|---|---|---|---|
| Larison Unit O-1-9140 | Salt Flat | Bastrop Energy Group | 1 | 7.28K | 4.18K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 77 · prior 12 121(-36%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mockingbird Oil, Inc. (I)Jan 1994 → Sep 1996
- 2T. A. W. CompanyOct 1996 → Aug 1999
- 3Centex Pipe & Equipment, Inc.Sep 1999 → Feb 2020
- 4Occidental Energy Company, Inc.Mar 2020 → Jul 2021
- 5Cheatham Well Service, Inc.Aug 2021 → Jun 2025
- 6Bastrop Energy GroupJul 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 206103-99 | Drill | Tri-County Operating Company | Jul 29, 1983 | Aug 1, 1983 | — | 2,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-9140 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,456 | 2,634 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 76 | 11 | 50 S |
| 2.375 | 2,400 | — | — |
| 5.5 | 2,742 | 7.875 | 398 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 | Sep 26, 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 42-055-33257 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-055-33257 → 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/05533257, documented in the API reference.