WELL · 42-135-05203 · DISTRICT 8
TXL South Unit #5801W
Ector County · TXL (Tubb) field · Vertical
Txl South Unit #5801W (API 42-135-05203) is a disposal or injection well in Ector County operated by Formentera Operations LLC under an active UIC permit.
The RRC has issued one drilling permit, issued November 3, 2016, permitted to 6,500 ft.
It was permitted by Apache Corporation and has since transferred to Formentera Operations LLC on the wellbore schedule.
Completion filings report 5 formation tops, including San Andres, Glorieta, Clear Fork, Tubb.
Its lease has reported 21.3M barrels of oil and 42.2M mcf of gas since January 1993, last reporting in July 2026. The lease carries 718 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 96K barrels injected in the 12 months reported through October 2025.
Operator of record
Permitted by Apache Corporation; the EWA schedule now lists a different operator.
- Based in
- Austin, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 11, 2026
- Permits on file
- 90
- Phone
- (512) 514-5779
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Formentera Operations LLC |
| Production reports | Formentera Operations LLCthrough Apr 2026 |
| Latest permit | Apache CorporationNov 3, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,500
- total depth, ft
- 1
- permits on file
- Nov 3, 2016
- last permit issued
- —
- completed
- 21.3M
- cumulative oil, bbl
- 42.2M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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 lease this well is completed on; they carry 718 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| TXL South Unit O-10-20726 | TXL (Tubb) | Formentera Operations LLC | 718 | 21.3M | 42.2M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 216,883 · prior 12 248,228(-13%)
Gas, mcf lease total
Last 12 months 284,726 · prior 12 342,019(-17%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Texaco E & P Inc.Jan 1993 → Oct 1994
- 2Anadarko Petroleum CorporationNov 1994 → Mar 2007
- 3Apache CorporationApr 2007 → Jun 2021
- 4Slant Operating, LLCJul 2021 → Oct 2023
- 5Formentera Operations LLCNov 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 819645-99 | Recompletion | Apache Corporation | Oct 20, 2016 | Nov 3, 2016 | Jan 27, 2017 | 6,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-20726 | — | — | — | — |
| — | — O-10-20726 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,050 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 3,982 | -932 |
| Glorieta | 5,095 | -2,045 |
| Clear ForkCLEARFORK | 5,375 | -2,325 |
| Tubb | 5,970 | -2,920 |
| Wichita-AlbanyWICHITA ALBANY | 6,492 | -3,442 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,376 | 5,724 | Perforated |
| 6,008 | 6,175 | Perforated |
| 6,140 | 6,253 | Perforated |
| 6,301 | 6,405 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 140 | 17.25 | 150 S |
| 7 | 6,008 | 8.75 | 300 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 | May 7, 2019 | Mar 12, 2019 | — |
| 00 | May 6, 2019 | Mar 5, 2019 | — |
| 00 | Aug 28, 2001 | May 25, 2001 | — |
| 00 | Jul 31, 2001 | — | — |
| 00 | Jan 12, 1984 | — | — |
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 42-135-05203 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-05203 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 96K
- bbl, last 12 reported months
- 3.82M
- bbl, all reported
- Oct 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000090728 | H-1 Injection | Active | 2,000 | 2,000 | 5,300–6,500 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 96,036 · prior 12 125,903(-24%)
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/13505203, documented in the API reference.