WELL · 42-029-31055 · DISTRICT 1
Castellano #5
Bexar County · Somerset field · Producing · Vertical
Castellano #5 (API 42-029-31055) is a well in Bexar County operated by Texas Secondary Oil Corporation, completed May 1, 1980 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 22, 1980, permitted to 1,200 ft.
It was permitted by Clark, G. A., Trustee and has since transferred to Texas Secondary Oil Corporation on the wellbore schedule.
Completion filings report one formation top, including Uknown.
Its lease has reported 4.41K barrels of oil and 38 mcf of gas since January 1993, last reporting in July 2026. The lease carries 5 wells, so these are lease totals, not this well alone.
Operator of record
Texas Secondary Oil Corporation
Permitted by Clark, G. A., Trustee; the EWA schedule now lists a different operator.
Devine, TX · P-5 Y, filed Aug 4, 2025 · 304 permits on file · (830) 538-4004
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Texas Secondary Oil Corporation |
| Production reports | Texas Secondary Oil Corporationthrough Apr 2026 |
| Latest permit | Clark, G. A., TrusteeApr 22, 1980 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,200
- total depth, ft
- 1
- permits on file
- Apr 22, 1980
- last permit issued
- May 1, 1980
- completed
- 4.41K
- cumulative oil, bbl
- 38
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 1, 1980
- 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; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Castellano O-1-10933 | Somerset | Texas Secondary Oil Corporation | 5 | 4.41K | 38 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 15 · prior 12 21(-29%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Clark, G. A., TrusteeJan 1993 → Nov 2017
- 2Texas Secondary Oil CorporationDec 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 78824-99 | Drill | Clark, G. A., Trustee | Apr 22, 1980 | Apr 22, 1980 | — | 1,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-10933 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 928 | 948 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 1,008 | 7.875 | 172 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 | Dec 3, 2013 | Mar 1, 2013 | 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 42-029-31055 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-029-31055 → 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/02931055, documented in the API reference.