TEXAS · WELLS · CROCKETT COUNTY · UNIVERSITY 31-31 S LEASE · API 42-105-38269 · DISTRICT 6E
University 31-31 S #4
Crockett County · University 31 (Strawn-Detrital) field · Producing · Vertical
University 31-31 S #4 (API 42-105-38269) is a well in Crockett County operated by Red Stag Operating LLC, completed August 3, 1999 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 15, 1999, permitted to 9,428 ft.
It was permitted by Thompson, J. Cleo and has since transferred to Red Stag Operating LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Wolfcamp, Canyon, Strawn, Detrital.
Its lease has reported 1.15K barrels of oil and 555K mcf of gas since August 1999, last reporting volume in April 2026.
Operator of record
Permitted by Thompson, J. Cleo; the EWA schedule now lists a different operator.
- Based in
- Ozona, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 3, 2026
- Phone
- (325) 392-3721
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Red Stag Operating LLC |
| Production reports | Red Stag Operating, LLCthrough Apr 2026 |
| Latest permit | Thompson, J. CleoJun 15, 1999 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,428
- total depth, ft
- 1
- permits on file
- Jun 15, 1999
- last permit issued
- Aug 3, 1999
- completed
- 1.15K
- cumulative oil, bbl
- 555K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 1999 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 3, 1999
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| University 31-31 S G-9-173931 | University 31 (Strawn-Detrital) | Red Stag Operating, LLC | 1 | 1.15K | 555K | Aug 1999 – Apr 2026 |
Gas, mcf lease total
Last 12 months 4,855 · prior 12 7,103(-32%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Thompson, J. CleoAug 1999 → Mar 2021
- 2Red Stag Operating, LLCApr 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 485204-99 | Drill | Thompson, J. Cleo | Jun 14, 1999 | Jun 15, 1999 | Jul 13, 1999 | 9,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 3, 1999 | University 31-31 S G-9-173931 | University 31 (Strawn-Detrital) | Red Stag Operating LLC | Producing | 9,428 |
Formation tops
As filed on W-2/G-1. Subsea from 2,503 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WolfcampBASE MID WOLFCAMP | 6,133 | -3,630 |
| Canyon | 7,264 | -4,761 |
| Strawn | 9,185 | -6,682 |
| Detrital | 9,280 | -6,777 |
| Silurian (undifferentiated)SILURIAN | 9,382 | -6,879 |
| Sylvan | 9,418 | -6,915 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,189 | 9,233 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,006 | 11 | 620 S |
| 4.5 | 9,423 | 7.875 | 700 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Sep 13, 1999 | Aug 23, 1999 | Yes |
| 00 | Aug 31, 1999 | — | — |
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 42-105-38269 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-105-38269 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its 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/10538269, documented in the API reference.