TEXAS · WELLS · CROCKETT COUNTY · API 42-105-40945 · DISTRICT 6E
University 56-12 #1
Crockett County · Sawyer (Strawn North) field · SWR-10-Well · Vertical
University 56-12 #1 (API 42-105-40945) is a well in Crockett County operated by Upp Operating LLC, completed December 25, 2009 and listed as swr-10-well on the RRC schedule, shut in September 1, 2016.
The RRC has issued one drilling permit, issued December 11, 2008, permitted to 8,750 ft.
It was permitted by Highmount Expl & Prod Texas LLC and has since transferred to Upp Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Base Cretaceous (marker), Wolfcamp, Canyon, Strawn.
Its 2 leases have reported 20 barrels of oil and 2.66K mcf of gas since December 2009, with no volume in the three years through April 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Highmount Expl & Prod Texas LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 6, 2026
- Permits on file
- 33
- Phone
- (713) 495-5300
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Upp Operating LLC |
| Production reports | Upp Operating, LLCthrough Dec 2018 |
| Latest permit | Highmount Expl & Prod Texas LLCDec 11, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,750
- total depth, ft
- 1
- permits on file
- Dec 11, 2008
- last permit issued
- Dec 25, 2009
- completed
- 20
- cumulative oil, bbl
- 2.66K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2010 THROUGH Dec 2018
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 25, 2009
- Shut in
- Sep 1, 2016
- 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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| University 56-12 G-9-255536 | Ozona, NE. (Canyon 7520) | Upp Operating, LLC | 1 | 20 | 2.66K | Dec 2009 – Dec 2018 |
| University 56-12 G-9-255537 | Sawyer (Strawn, North) | Upp Operating, LLC | 1 | 0 | 0 | Dec 2009 – — |
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.
- 1Highmount Expl & Prod Texas LLCJun 2010 → Sep 2014
- 2Enervest Operating, L.L.C.Oct 2014 → Dec 2018
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 676053-99 | Drill | Highmount Expl & Prod Texas LLC | Dec 9, 2008 | Dec 11, 2008 | Nov 8, 2009 | 8,995 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 26, 2010 | University 56-12 G-9-255536 | Ozona NE. (Canyon 7520) | Upp Operating LLC | Temp Abandoned · shut in Sep 1, 2016 | 8,750 |
| Dec 25, 2009 | University 56-12 G-9-255537 | Sawyer (Strawn North) | Upp Operating LLC | SWR-10-Well · shut in Dec 1, 2009 | 8,750 |
Formation tops
As filed on W-2/G-1. Subsea from 2,506 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE CRETACEOUS | 1,737 | 769 |
| Wolfcamp | 5,290 | -2,784 |
| Canyon | 7,184 | -4,678 |
| Strawn | 8,377 | -5,871 |
| Ellenburger | 8,577 | -6,071 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,640 | 7,792 | Perforated |
| 8,382 | 8,514 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,613 | 11 | 480 S |
| 4.5 | 8,712 | 7.875 | 500 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 | Aug 30, 2010 | Jul 23, 2010 | — |
| 00 | Jun 23, 2010 | Mar 25, 2010 | Yes |
| 00 | May 6, 2010 | — | — |
Well logs
2 logs loaded from the RRC's log index, the latest received Dec 5, 2012. Density, Neutron, Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| NEUTRON/DENSITY POROSITYSpans Wolfcamp, Canyon, Strawn, Ellenburger | TIFF | 7,000 to 8,730 | Dec 5, 2012run Nov 13, 2009 | 3.13 |
| RESISTIVITYSpans Base Cretaceous (marker), Wolfcamp, Canyon, Strawn, Ellenburger | TIFF | 200 to 8,730 | Dec 5, 2012run Nov 13, 2009 | 5.91 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-105-40945 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-105-40945 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search 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/10540945, documented in the API reference.