WELL · 42-131-36890 · DISTRICT 4
V. Cuellar Unit #1 #1
Duval County · Vertical
V. Cuellar Unit #1 #1 (API 42-131-36890) is a permitted well in Duval County filed by Hamilton, J. R.; no completion report is on file yet.
The RRC has issued 5 drilling permits between 1986 and 2003, permitted to 8,500 ft.
Completion filings report 13 formation tops, including 4100' Frio, Top Of 4100 Frio, Top Of 4100' Frio, Tinney Sand.
Its 4 leases have reported 9.53K barrels of oil and 1.01M mcf of gas since January 1993, last reporting in March 2008. The leases carry 5 wells, so these are lease totals, not this well alone.
Operator of record
Carrizo Spgs, TX · P-5 Y, filed Feb 4, 2026 · 58 permits on file · (830) 876-8667
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Hamilton, J. R.through Jul 2005 |
| Latest permit | Hamilton, J. R.Nov 7, 2003 |
- 8,500
- total depth, ft
- 5
- permits on file
- Nov 7, 2003
- last permit issued
- —
- completed
- 9.53K
- cumulative oil, bbl
- 1.01M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2008
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
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 4 leases 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 |
|---|---|---|---|---|---|---|
| Cuellar No. 1 Gas Unit O-4-11885 | J. R. (4070) | Hamilton, J. R. | 2 | 9.53K | 19.8K | Jan 1993 – Mar 2008 |
| Cuellar Gas Unit 1 G-4-165385 | Four Sevens (Yegua 7545) | Hamilton, J. R. | 1 | 0 | 908K | Feb 1997 – May 2007 |
| Cuellar, V. Gas Unit 1 G-4-121564 | Four Sevens (8100 Yegua) | Vintage Petroleum, Inc. | 1 | 0 | 85.3K | Jan 1993 – Sep 2001 |
| Cuellar, V. Gas Unit 1 G-4-160380 | Four Sevens (Yegua a 7865) | Vintage Petroleum, Inc. | 1 | 0 | 0 | Feb 1996 – Feb 1997 |
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.
- 1Hamilton, J. R.Jan 1993 → Jul 2005
- 2Santa FE Energy Oper. Part., LPJan 1993 → Apr 1993
- 3Vintage Petroleum, Inc.May 1993 → Jan 2000
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 538312-99 | Recompletion | Hamilton, J. R. | Nov 6, 2003 | Nov 7, 2003 | Nov 7, 2003 | 4,800 |
| 490150-99 | Recompletion | Vintage Petroleum, Inc. | Dec 8, 1999 | Dec 8, 1999 | — | 7,460 |
| 457427-99 | Recompletion | Vintage Petroleum, Inc. | Jan 16, 1997 | Jan 16, 1997 | Jan 18, 1997 | 8,128 |
| 443345-99 | Recompletion | Vintage Petroleum, Inc. | Dec 29, 1995 | Dec 29, 1995 | Dec 21, 1995 | 8,128 |
| 299301-99 | Drill | Genesis Petroleum Corporation | Mar 10, 1986 | Mar 11, 1986 | May 22, 1986 | 8,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-121564 | — | — | — | — |
| — | — G-4-160380 | — | — | — | — |
| — | — G-4-165385 | — | — | — | — |
| — | — O-4-11885 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 287 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| 4100' Frio | 4,070 | -3,783 |
| Top of 4100 Frio | 4,070 | -3,783 |
| Top of 4100' Frio | 4,070 | -3,783 |
| Tinney Sand | 5,540 | -5,253 |
| Tinney SD | 5,540 | -5,253 |
| Top of Tinney Sand | 5,540 | -5,253 |
| Hockley | 5,943 | -5,656 |
| Top of Hockley | 5,943 | -5,656 |
| Yockley | 5,943 | -5,656 |
| YeguaTOP OF YEGUA | 6,810 | -6,523 |
| Yegua | 6,810 | -6,523 |
| 8100 Yegua | 8,024 | -7,737 |
| 8100' Yegua | 8,024 | -7,737 |
| Top of 8100' Yegua | 8,024 | -7,737 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,940 | 3,942 | Perforated |
| 7,552 | 7,598 | Perforated |
| 7,782 | 7,796 | Perforated |
| 7,784 | 7,798 | Perforated |
| 7,824 | 7,832 | Perforated |
| 7,950 | 7,957 | Perforated |
| 8,024 | 8,052 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,517 | 14.75 | 1,485 S |
| 7.625 | 6,348 | 9.875 | 700 S |
| 4.5 | 8,127 | 6.75 | 400 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 | Feb 24, 2004 | Dec 15, 2003 | Yes |
| 00 | Feb 2, 2004 | — | — |
| 00 | Dec 19, 1997 | Mar 5, 1997 | Yes |
| 00 | Dec 5, 1997 | — | — |
| 00 | Oct 28, 1997 | Mar 7, 1997 | — |
| 00 | Mar 28, 1997 | Aug 29, 1996 | Yes |
| 00 | Nov 6, 1996 | — | — |
| 00 | Jul 14, 1986 | Jun 30, 1986 | Yes |
| 00 | Jul 11, 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 42-131-36890 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-131-36890 → 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/13136890, documented in the API reference.