WELL · 42-131-36879 · DISTRICT 4
Cuellar -A- #1A
Duval County · Tesoro field · Vertical
Cuellar -A- #1A (API 42-131-36879) is a plugged well in Duval County, plugged April 7, 2015, last operated by Tyludadeda LLC.
The RRC has issued one drilling permit, issued January 27, 1986, permitted to 5,400 ft.
It was permitted by Rio Exploration Company and has since transferred to Tyludadeda LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Frio, Cole, Hockley.
Its lease has reported 693 barrels of oil and 24 mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Rio Exploration Company; the EWA schedule now lists a different operator.
Flagstaff, AZ · P-5 Y, filed May 4, 2026
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Tyludadeda LLC |
| Production reports | Garcia, A. H.through Feb 1995 |
| Latest permit | Rio Exploration CompanyJan 27, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,400
- total depth, ft
- 1
- permits on file
- Jan 27, 1986
- last permit issued
- Feb 21, 1986
- completed
- 693
- cumulative oil, bbl
- 24
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 21, 1986
- Shut in
- —
- Plugged
- Apr 7, 2015
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 |
|---|---|---|---|---|---|---|
| Cuellar -A- O-4-11193 | Tesoro | Tyludadeda, LLC | 1 | 693 | 24 | 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.
- 1Garcia, A. H.Jan 1993 → Nov 1994
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 296209-99 | Drill | Rio Exploration Company | Jan 27, 1986 | Jan 27, 1986 | Feb 1, 1986 | 5,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-4-11193 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 404 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Frio | 1,240 | -836 |
| Cole | 3,660 | -3,256 |
| Hockley | 4,236 | -3,832 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,241 | 4,246 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 763 | 12.25 | 260 S |
| 4.5 | 4,477 | 7.875 | 828 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 | Apr 13, 1987 | Mar 13, 1987 | — |
| 00 | Mar 25, 1987 | — | — |
| 00 | Mar 19, 1986 | Feb 27, 1986 | Yes |
| 00 | Mar 8, 1986 | — | — |
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 42-131-36879 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-131-36879 → 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/13136879, documented in the API reference.