TEXAS · WELLS · ANDREWS COUNTY · API 42-003-41102 · DISTRICT 7B
Uls Cdu 4-12 #10
Andrews County · Magutex (Strawn) field · Producing · Vertical
Uls Cdu 4-12 #10 (API 42-003-41102) is a well in Andrews County operated by Zarvona Energy LLC, completed December 19, 2025 and listed as producing on the RRC schedule, shut in May 1, 2026.
The RRC has issued 2 drilling permits (amended once) between 2009 and 2011, permitted to 11,292 ft.
It was permitted by Devon Energy Production CO, L.P. and has since transferred to Zarvona Energy LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Clear Fork, T. Clearfork, Spraberry, T. Spraberry.
Its 2 leases have reported 14.1K barrels of oil and 9.36K mcf of gas since September 2009, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 98
- Phone
- (713) 600-0600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Devon Energy Production Co L.P. |
| Production reports | Zarvona Energy LLCthrough Sep 2025 |
| Latest permit | Devon Energy Production Co, L.P.May 2, 2011 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,292
- total depth, ft
- 3
- permits on file
- May 2, 2011
- last permit issued
- Dec 19, 2025
- completed
- 14.1K
- cumulative oil, bbl
- 9.36K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2009 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 19, 2025
- Shut in
- May 1, 2026
- 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 |
|---|---|---|---|---|---|---|
| Uls Cdu 4-12 O-10-41106 | Magutex (Strawn) | Zarvona Energy LLC | 1 | 14.1K | 9.36K | Mar 2011 – Jul 2026 |
| Uls Cdu 4-12 O-10-39971 | Spraberry (Trend Area) | Devon Energy Production Co, L.P. | 1 | 0 | 0 | Sep 2009 – Feb 2012 |
Oil, barrels lease total
Last 12 months 241 · prior 12 719(-66%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Production Co, L.P.Mar 2011 → Aug 2016
- 2Pioneer Natural Res. USA, Inc.Sep 2016 → Jan 2017
- 3Zarvona Energy LLCFeb 2017 → Sep 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 715159-99 | Recompletion | Devon Energy Production Co, L.P. | Apr 27, 2011 | May 2, 2011 | Feb 23, 2011 | 11,292 |
| 683576-98 | Drill | Henry Resources LLC | Aug 3, 2009 | Jul 31, 2009 | Sep 13, 2009 | 11,500 |
| 683576-99 | Drill | Henry Resources LLC | Jul 28, 2009 | Jul 31, 2009 | Sep 13, 2009 | 11,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 19, 2025 | Uls Cdu 4-12 O-10-41106 | Magutex (Strawn) | Zarvona Energy LLC | Producing · shut in May 1, 2026 | 11,292 |
| Sep 28, 2009 | Uls Cdu 4-12 O-10-39971 | Spraberry (Trend Area) | Devon Energy Production Co L.P. | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,074 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear Fork | 6,790 | -3,716 |
| T. Clearfork | 6,790 | -3,716 |
| Spraberry | 8,730 | -5,656 |
| T. Spraberry | 8,730 | -5,656 |
| Dean | 8,760 | -5,686 |
| T. Dean | 8,760 | -5,686 |
| T. Wolfcamp | 10,020 | -6,946 |
| Wolfcamp | 10,020 | -6,946 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,984 | 11,092 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,802 | 12.25 | 920 S |
| 5.5 | 11,292 | 8.75 | 590 S |
| 5.5 | — | 8.75 | 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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jun 17, 2026 | Feb 11, 2026 | — |
| 00 | Jan 30, 2012 | May 5, 2011 | — |
| 00 | Jul 27, 2010 | Mar 2, 2010 | Yes |
| 00 | Jun 25, 2010 | — | — |
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 42-003-41102 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-41102 → 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/00341102, documented in the API reference.