WELL · 42-163-30288 · DISTRICT 1
Mills J. C. #4
Frio County · Pearsall (Austin Chalk) field · Horizontal
Mills J. C. #4 (API 42-163-30288) is a plugged horizontal well in Frio County, plugged December 26, 2006, last operated by Stratco Operating CO. Inc..
The RRC has issued one drilling permit, issued July 13, 1990, permitted to 6,350 ft.
It was permitted by Flournoy Production CO. and has since transferred to Stratco Operating CO. Inc. on the wellbore schedule.
Completion filings report one formation top, including Austin Chalk.
Its lease has reported 10.2K barrels of oil and 2.16K mcf of gas since January 1993, last reporting in July 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Flournoy Production Co.; the EWA schedule now lists a different operator.
Austin, TX · P-5 Y, filed Apr 4, 2026 · 12 permits on file · (512) 469-0064
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Stratco Operating Co. Inc. |
| Production reports | Stratco Operating Co., Inc.through Jul 2005 |
| Latest permit | Flournoy Production Co.Jul 13, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,350
- total depth, ft
- 1
- permits on file
- Jul 13, 1990
- last permit issued
- Aug 22, 1990
- completed
- 10.2K
- cumulative oil, bbl
- 2.16K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 22, 1990
- Shut in
- —
- Plugged
- Dec 26, 2006
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mills, J. C. O-1-4669 | Pearsall (Austin Chalk) | Stratco Operating Co., Inc. | 4 | 10.2K | 2.16K | 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.
- 1Magnum Petroleum, Inc.Jan 1993 → Apr 1995
- 2Jena Operating Company, Inc.May 1995 → Sep 1995
- 3Gruy Petroleum Management Co.Oct 1995 → Jan 1999
- 4Stratco Operating Co., Inc.Oct 1999 → Jul 2005
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 375483-99 | Drill | Flournoy Production Co. | Jul 13, 1990 | Jul 13, 1990 | — | 6,350 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-4669 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 628 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 6,151 | -5,523 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,864 | 8,466 | Perforated |
| 6,195 | 6,468 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 214 | 12.25 | 160 S |
| — | 3,321 | — | 675 S |
| 4.5 | 6,575 | 7.875 | 1,175 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 | Nov 26, 1990 | Sep 13, 1990 | Yes |
| 00 | Jan 12, 1984 | Apr 6, 1976 | — |
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 42-163-30288 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-30288 → 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/16330288, documented in the API reference.