WELL · 42-409-31920 · DISTRICT 4
Person, Frieda Unit #4
San Patricio County · Vertical
Person, Frieda Unit #4 (API 42-409-31920) is a permitted well in San Patricio County filed by Chisholm Oil & Gas, LC; no completion report is on file yet.
The RRC has issued 5 drilling permits between 1984 and 2005, permitted to 5,700 ft.
Completion filings report one formation top, including Frio.
Operator of record
Buda, TX · P-5 Y, filed Sep 8, 2017 · 3 permits on file · (512) 560-5632
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Salvador Oil, LLCthrough Jan 2016 |
| Latest permit | Chisholm Oil & Gas, LCMar 28, 2005 |
- 5,700
- total depth, ft
- 5
- permits on file
- Mar 28, 2005
- last permit issued
- —
- completed
- 0
- cumulative oil, bbl
- 295K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Aug 2019
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Person, Frieda Unit G-4-207286 | Mathis, E. (3940) | Salvador Oil, LLC | 1 | 0 | 79.3K | Dec 2004 – Aug 2019 |
| Person, Frieda Unit G-4-203053 | Mathis, E. (3755) | Chisholm Oil & Gas, LC | 1 | 0 | 2.35K | Jun 2004 – Nov 2004 |
| Person, Frieda Unit G-4-171915 | Mathis, E. (3940) | Reserve Operating Corp. | 1 | 0 | 98.8K | Jan 1999 – Jun 2004 |
| Person, Frieda Unit G-4-111315 | Mathis, East (5200) | Reserve Operating Corp. | 1 | 0 | 114K | Jan 1993 – Jan 1999 |
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.
- 1Reserve Operating Corp.Jan 1993 → Jul 2004
- 2Chisholm Oil & Gas, LCAug 2004 → Nov 2014
- 3Salvador Oil, LLCJan 2016 → Jan 2016
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 555847-99 | Recompletion | Chisholm Oil & Gas, LC | Jan 6, 2005 | Mar 28, 2005 | Nov 15, 2004 | 5,697 |
| 546117-99 | Recompletion | Reserve Operating Corp. | May 25, 2004 | May 26, 2004 | — | 4,330 |
| 481685-99 | Recompletion | Reserve Operating Corp. | Dec 21, 1998 | Jan 7, 1999 | Jan 20, 1999 | 4,600 |
| 386705-99 | Recompletion | SFM Holdings, Inc. | Apr 12, 1991 | Jul 12, 1991 | — | 5,700 |
| 235597-99 | Drill | Santa FE - Windsor Producing Co. | Mar 19, 1984 | Mar 21, 1984 | Apr 2, 1984 | 5,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-111315 | — | — | — | — |
| — | — G-4-171915 | — | — | — | — |
| — | — G-4-203053 | — | — | — | — |
| — | — G-4-207286 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 121 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,764 | 3,766 | Perforated |
| 3,975 | 3,980 | Perforated |
| 5,233 | 5,238 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 896 | 12.25 | 685 sx |
| 5.5 | 5,697 | 7.875 | 450 sx |
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 | Aug 2, 2005 | Jan 13, 2005 | Yes |
| 00 | Apr 5, 2005 | — | — |
| 00 | Oct 8, 2004 | Aug 18, 2004 | Yes |
| 00 | Sep 1, 2004 | — | — |
| 00 | Mar 8, 1999 | Feb 18, 1999 | Yes |
| 00 | Mar 2, 1999 | — | — |
| 00 | Jul 17, 1984 | Jun 8, 1984 | — |
| 00 | Jul 14, 1984 | Jun 8, 1984 | — |
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 42-409-31920 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-409-31920 → 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/40931920, documented in the API reference.