WELL · 42-105-37083 · DISTRICT 7
University -S- #12
Crockett County · Farmer (San Andres) field · Shut IN · Vertical
University -S- #12 (API 42-105-37083) is a well in Crockett County operated by Extex Operating Company, completed February 18, 1996 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued December 4, 1995, permitted to 2,500 ft.
It was permitted by Marathon Oil Company and has since transferred to Extex Operating Company on the wellbore schedule.
Completion filings report 4 formation tops, including Yates, Seven Rivers, Queen, San Andres.
Its lease has reported 239K barrels of oil and 313K mcf of gas since January 1993, last reporting in July 2026. The lease carries 14 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Marathon Oil Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 7, 2026
- Permits on file
- 117
- Phone
- (713) 953-0824
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Extex Operating Company |
| Production reports | Extex Operating Companythrough Apr 2026 |
| Latest permit | Marathon Oil CompanyDec 4, 1995 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,500
- total depth, ft
- 1
- permits on file
- Dec 4, 1995
- last permit issued
- Feb 18, 1996
- completed
- 239K
- cumulative oil, bbl
- 313K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 18, 1996
- 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; they carry 14 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University -S- O-9-463 | Farmer (San Andres) | Extex Operating Company | 14 | 239K | 313K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,154 · prior 12 1,293(-11%)
Gas, mcf lease total
Last 12 months 6,737 · prior 12 5,723(+18%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil CompanyJan 1993 → Oct 1999
- 2Brothers Production Company Inc.Nov 1999 → Mar 2006
- 3Legacy Reserves Operating LPApr 2006 → Jan 2021
- 4Extex Operating CompanyFeb 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 441744-99 | Drill | Marathon Oil Company | Nov 9, 1995 | Dec 4, 1995 | Jan 16, 1996 | 2,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-463 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,642 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,130 | 1,512 |
| Seven Rivers | 1,500 | 1,142 |
| Queen | 1,900 | 742 |
| San Andres | 2,100 | 542 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,228 | 2,361 | Perforated |
| 2,468 | 2,514 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 833 | 11 | 330 S |
| 5.5 | 2,749 | 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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jun 7, 2001 | Jan 23, 2001 | — |
| 00 | Jan 10, 1997 | Mar 8, 1996 | Yes |
| 00 | Jan 7, 1997 | — | — |
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 42-105-37083 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-105-37083 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/10537083, documented in the API reference.