WELL · 42-489-31181 · DISTRICT 4
Yturria #40
Willacy County · LA Sara E. (7940) field · Vertical
Yturria #40 (API 42-489-31181) is a well in Willacy County operated by La Sara Operating Company LLC, completed September 12, 2007.
The RRC has issued one drilling permit, issued July 17, 2007, permitted to 8,300 ft.
It was permitted by Blakenergy Operating, LLC and has since transferred to La Sara Operating Company LLC on the wellbore schedule.
Completion filings report one formation top, including Frio.
Its 2 leases have reported 3.64K barrels of oil and 359K mcf of gas since September 2007, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Blakenergy Operating, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jun 2, 2017 · 13 permits on file · (713) 819-6077
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | LA Sara Operating Company LLC |
| Production reports | Texas Oil and Gas Operating, LLCthrough May 2019 |
| Latest permit | Blakenergy Operating, LLCJul 17, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,300
- total depth, ft
- 1
- permits on file
- Jul 17, 2007
- last permit issued
- Sep 12, 2007
- completed
- 3.64K
- cumulative oil, bbl
- 359K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 12, 2007
- 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 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 |
|---|---|---|---|---|---|---|
| Yturria O-4-13863 | LA Sara, E. (7940) | Texas Oil and Gas Operating, LLC | 1 | 3.64K | 0 | Mar 2013 – Jul 2026 |
| Yturria G-4-243876 | LA Sara, E. (7940) | LA Sara Operating Company, LLC | 1 | 0 | 359K | Sep 2007 – Dec 2014 |
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.
- 1Blakenergy Operating, LLCSep 2007 → Apr 2019
- 2Risco la Sara Operations, LLCMar 2011 → Aug 2014
- 3LA Sara Operating Company, LLCSep 2014 → Oct 2015
- 4Texas Oil and Gas Operating, LLCMay 2019 → May 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 642112-99 | Drill | Blakenergy Operating, LLC | Jul 9, 2007 | Jul 17, 2007 | Aug 19, 2007 | 8,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-243876 | — | — | — | — |
| — | — O-4-13863 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 33 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Frio | 7,968 | -7,935 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,917 | 7,919 | Perforated |
| 7,938 | 7,940 | Perforated |
| 7,950 | 7,952 | Perforated |
| 7,964 | 7,968 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,020 | 12.25 | 222 S |
| 8.625 | 1,022 | 12.25 | 481 S |
| 4.5 | 7,982 | 7.875 | 400 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 | Nov 24, 2014 | Jan 6, 2014 | — |
| 00 | Jul 31, 2009 | Mar 25, 2009 | — |
| 00 | Feb 5, 2009 | Mar 28, 2008 | Yes |
| 00 | Jan 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 42-489-31181 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-489-31181 → 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/48931181, documented in the API reference.