WELL · 42-461-37891 · DISTRICT 7
TXL 21 #15
Upton County · Spraberry (Trend Area) field · Vertical
Txl 21 #15 (API 42-461-37891) is a well in Upton County operated by Winn Operating LLC, completed May 13, 2012.
The RRC has issued one drilling permit, issued February 10, 2012, permitted to 12,000 ft.
It was permitted by Cog Operating LLC and has since transferred to Winn Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, L. Wolfcamp, Bend.
Its 2 leases have reported 368K barrels of oil and 1.86M mcf of gas since May 2012, last reporting in July 2026. The leases carry 10 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by COG Operating LLC; the EWA schedule now lists a different operator.
- Based in
- Kilgore, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 23, 2026
- Permits on file
- 1
- Phone
- (903) 984-3443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Winn Operating LLC |
| Production reports | SM Energy Companythrough Apr 2026 |
| Latest permit | COG Operating LLCFeb 10, 2012 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 1
- permits on file
- Feb 10, 2012
- last permit issued
- May 13, 2012
- completed
- 368K
- cumulative oil, bbl
- 1.86M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 13, 2012
- 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 10 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| TXL '21' O-9-17975 | Spraberry (Trend Area) | Winn Operating, LLC | 6 | 334K | 1.67M | May 2012 – Jul 2026 |
| TXL '21' A O-9-21016 | Spraberry (Trend Area) | SM Energy Company | 4 | 34.4K | 194K | Aug 2020 – Jul 2026 |
Gas, mcf lease total
Last 12 months 29,437 · prior 12 65,295(-55%)
Oil, barrels lease total
Last 12 months 3,305 · prior 12 9,044(-63%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCMay 2012 → May 2025
- 2SM Energy CompanyAug 2020 → Dec 2025
- 3Winn Operating, LLCJun 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 732944-99 | Drill | COG Operating LLC | Feb 1, 2012 | Feb 10, 2012 | Mar 17, 2012 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-17975 | — | — | — | — |
| — | — O-9-21016 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,844 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,810 | 10,720 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 815 | 12.25 | 430 S |
| 5.5 | 10,895 | 7.875 | 950 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 | Aug 11, 2020 | Aug 24, 2012 | Yes |
| 00 | Jul 5, 2013 | Aug 24, 2012 | Yes |
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 42-461-37891 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-37891 → 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/46137891, documented in the API reference.