WELL · 42-383-35874 · DISTRICT 7
University -26B- #12TM
Reagan County · Spraberry (Trend Area) field · Vertical
University -26b- #12TM (API 42-383-35874) is a plugged well in Reagan County, plugged December 10, 2025, last operated by De Central Operating LLC.
The RRC has issued one drilling permit (amended once), issued November 3, 2006, permitted to 9,000 ft.
It was permitted by Tamarack Petroleum Company, Inc. and has since transferred to De Central Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Dean, Wolfcamp.
Its 2 leases have reported 112K barrels of oil and 248K mcf of gas since March 2003, last reporting in July 2026. The leases carry 10 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Tamarack Petroleum Company, Inc.; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed Nov 4, 2025 · 401 permits on file · (254) 559-7845
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | DE Central Operating LLC |
| Production reports | DE IV Operating, LLCthrough Oct 2024 |
| Latest permit | Mariner Energy, Inc.Nov 3, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 2
- permits on file
- Nov 3, 2006
- last permit issued
- —
- completed
- 112K
- cumulative oil, bbl
- 248K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2003 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- Dec 10, 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 2 leases this well is completed on; they carry 10 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University -26B- O-9-16168 | Spraberry (Trend Area) | DE Central Operating, LLC | 2 | 36.6K | 103K | Mar 2007 – Jul 2026 |
| University "26" O-9-15419 | Spraberry (Trend Area) | DE Central Operating, LLC | 8 | 75K | 145K | Mar 2003 – Mar 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 204(-100%)
Gas, mcf lease total
Last 12 months 0 · prior 12 58(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Tamarack Petroleum Company, Inc.Mar 2003 → Nov 2007
- 2Mariner Energy, Inc.Dec 2007 → Nov 2010
- 3Apache CorporationDec 2010 → Dec 2023
- 4DE IV Operating, LLCJan 2024 → Oct 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 628494-98 | Drill | Tamarack Petroleum Company, Inc. | Aug 6, 2007 | Nov 3, 2006 | Dec 6, 2006 | 9,000 |
| 628494-99 | Drill | Mariner Energy, Inc. | Nov 2, 2006 | Nov 3, 2006 | Dec 6, 2006 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-15419 | — | — | — | — |
| — | — O-9-16168 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,641 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,947 | 6,011 | Perforated |
| 6,543 | 6,943 | Perforated |
| 7,346 | 7,573 | Perforated |
| 7,619 | 8,428 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 524 | 11 | 300 S |
| 4.5 | 8,517 | 7.875 | 1,160 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 | May 4, 2007 | Jan 31, 2007 | Yes |
| 00 | Mar 21, 2007 | — | — |
| 00 | Feb 20, 2007 | — | — |
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 42-383-35874 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-383-35874 → 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/38335874, documented in the API reference.