WELL · 42-489-31215 · DISTRICT 4
Yturria #12
Willacy County · LA Sara (No. 41 Sand) field · Vertical
Yturria #12 (API 42-489-31215) is a well in Willacy County operated by Texas Oil And Gas Operating LLC, completed January 11, 2009.
The RRC has issued one drilling permit, issued October 6, 2008, permitted to 11,000 ft.
It was permitted by Blakenergy Operating, LLC and has since transferred to Texas Oil And Gas Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including La Sara (No. 22 Sand), La Sara (No. 32 Sand), La Sara (No. 33 Sand).
Its 3 leases have reported 3.95K barrels of oil and 214K mcf of gas since January 2009, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Texas Oil and Gas Operating LLC
Permitted by Blakenergy Operating, LLC; the EWA schedule now lists a different operator.
Friendswood, TX · P-5 Y, filed Sep 4, 2025 · 7 permits on file · (281) 317-8221
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Texas Oil and Gas Operating LLC |
| Production reports | Texas Oil and Gas Operating, LLCthrough Mar 2025 |
| Latest permit | Blakenergy Operating, LLCOct 6, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 1
- permits on file
- Oct 6, 2008
- last permit issued
- Jan 11, 2009
- completed
- 3.95K
- cumulative oil, bbl
- 214K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2009 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 11, 2009
- Shut in
- —
- Plugged
- —
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 3 leases this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Yturria G-4-253667 | LA Sara (No. 41 Sand) | Texas Oil and Gas Operating, LLC | 1 | 0 | 178K | Aug 2009 – Jul 2026 |
| Yturria O-4-14180 | LA Sara (No. 41 Sand) | Texas Oil and Gas Operating, LLC | 1 | 477 | 0 | Jan 2022 – Jul 2026 |
| Yturria O-4-13540 | LA Sara (No. 41 Sand) | Blakenergy Operating, LLC | 1 | 3.48K | 36.3K | Jan 2009 – Feb 2010 |
Oil, barrels lease total
Last 12 months 0 · prior 12 24(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Blakenergy Operating, LLCJan 2009 → Feb 2011
- 2Risco la Sara Operations, LLCMar 2011 → Aug 2014
- 3LA Sara Operating Company, LLCSep 2014 → Dec 2015
- 4MK Operating Company LLCJan 2016 → Jul 2016
- 5Texas Oil and Gas Operating, LLCJan 2020 → Mar 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 671866-99 | Drill | Blakenergy Operating, LLC | Sep 24, 2008 | Oct 6, 2008 | Nov 18, 2008 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-253667 | — | — | — | — |
| — | — O-4-13540 | — | — | — | — |
| — | — O-4-14180 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 33 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| LA Sara (No. 22 Sand) | 5,420 | -5,387 |
| LA Sara (No. 32 Sand) | 6,220 | -6,187 |
| LA Sara (No. 33 Sand) | 6,280 | -6,247 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,617 | 9,683 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,053 | 12.25 | — |
| 4.5 | 10,479 | 7.875 | — |
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 | Aug 31, 2022 | Jun 16, 2022 | — |
| 00 | Apr 14, 2010 | Aug 20, 2009 | — |
| 00 | Dec 29, 2009 | — | — |
| 00 | Jun 10, 2009 | Mar 25, 2009 | Yes |
| 00 | May 14, 2009 | — | — |
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 42-489-31215 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-489-31215 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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/48931215, documented in the API reference.