WELL · 42-383-35131 · DISTRICT 7
University #233
Reagan County · Big Lake field · Vertical
University #233 (API 42-383-35131) is a plugged well in Reagan County, plugged March 20, 2025, last operated by Apache Corporation.
The RRC has issued one drilling permit (amended once), issued April 2, 2001, permitted to 4,000 ft.
It was permitted by Marathon Oil Company and has since transferred to Apache Corporation on the wellbore schedule.
Completion filings report 3 formation tops, including Seven Rivers, Queen, Grayburg.
Its lease has reported 4.85M barrels of oil and 2.24M mcf of gas since January 1993, last reporting in July 2026. The lease carries 124 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
- Dec 3, 2025
- Permits on file
- 9,754
- Phone
- (713) 954-5500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Dec 2024 |
| Latest permit | Marathon Oil CompanyApr 2, 2001 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,000
- total depth, ft
- 2
- permits on file
- Apr 2, 2001
- last permit issued
- Mar 27, 2019
- completed
- 4.85M
- cumulative oil, bbl
- 2.24M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 27, 2019
- Shut in
- —
- Plugged
- Mar 20, 2025
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 124 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University O-9-228 | Big Lake | Apache Corporation | 124 | 4.85M | 2.24M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 175(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil CompanyJan 1993 → May 2009
- 2Apache CorporationJun 2009 → Dec 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 507269-98 | Drill | Marathon Oil Company | Mar 4, 2002 | Apr 2, 2001 | May 16, 2002 | 4,000 |
| 507269-99 | Drill | Marathon Oil Company | Apr 2, 2001 | Apr 2, 2001 | — | 4,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-228 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,657 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Seven Rivers | 1,860 | 797 |
| Queen | 2,400 | 257 |
| GrayburgGRAYBURG/SAN ANDRES | 2,701 | -44 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,170 | 3,190 | Perforated |
| 3,170 | 3,215 | Perforated |
| 3,205 | 3,215 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 630 | 12.25 | 230 S |
| 7 | 3,275 | 8.75 | 1,050 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 | Oct 21, 2024 | May 23, 2024 | — |
| 00 | Sep 18, 2002 | Jul 16, 2002 | Yes |
| 00 | Aug 29, 2002 | — | — |
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 42-383-35131 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-35131 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 81.7K
- bbl, last 12 reported months
- 90.3M
- bbl, all reported
- Nov 2024
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000092314 | W-14 Disposal | Plugged Mar 26, 2025 | 30,000 | 600 | 3,100–4,000 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 81,735 · prior 12 80,507(+2%)
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/38335131, documented in the API reference.