TEXAS · WELLS · ZAPATA COUNTY · SLATOR RANCH LEASE · API 42-505-35975 · DISTRICT 04
Slator Ranch #T 4
Zapata County · Stirling (Wilcox Consolidated) field · Producing · Vertical
Slator Ranch #T 4 (API 42-505-35975) is a well in Zapata County operated by Mountain V Texas LLC, completed August 11, 2008 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 6, 2007, permitted to 11,300 ft.
It was permitted by Eog Resources, Inc. and has since transferred to Mountain V Texas LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Queen City, Wilcox, Top Lwr Wilcox, Top Lobo Unc.
Its lease has reported 5.77K barrels of oil and 2.32M mcf of gas since December 2007, last reporting volume in April 2026.
Operator of record
Permitted by EOG Resources, Inc.; the EWA schedule now lists a different operator.
- Based in
- Buckhannon, WV
- P-5 status
- Active (A)
- P-5 last filed
- Sep 11, 2025
- Phone
- (304) 842-6320
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mountain V Texas LLC |
| Production reports | Mountain V Texas, LLCthrough Apr 2026 |
| Latest permit | EOG Resources, Inc.Sep 6, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,300
- total depth, ft
- 1
- permits on file
- Sep 6, 2007
- last permit issued
- Aug 11, 2008
- completed
- 5.77K
- cumulative oil, bbl
- 2.32M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2007 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 11, 2008
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Slator Ranch G-4-233148 | Stirling (Wilcox Consolidated) | Mountain V Texas, LLC | 1 | 5.77K | 2.32M | Dec 2007 – Apr 2026 |
Gas, mcf lease total
Last 12 months 24,379 · prior 12 27,182(-10%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1EOG Resources, Inc.Dec 2007 → Aug 2016
- 2Smith Production Inc.Sep 2016 → Mar 2026
- 3Mountain V Texas, LLCApr 2026 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 645547-99 | Drill | EOG Resources, Inc. | Sep 5, 2007 | Sep 6, 2007 | Nov 4, 2007 | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 11, 2008 | Slator Ranch G-4-233148 | Stirling (Wilcox Consolidated) | Mountain V Texas LLC | Producing | 11,300 |
Formation tops
As filed on W-2/G-1. Subsea from 596 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen CityTOP OF QUEEN CITY | 3,620 | -3,024 |
| Wilcox | 6,350 | -5,754 |
| Top LWR Wilcox | 7,780 | -7,184 |
| Top Lobo Unc | 10,480 | -9,884 |
| Wills PointTOP WILLS POINT | 11,030 | -10,434 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,852 | 10,986 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 521 | 12.25 | 250 S |
| 7 | 8,505 | 8.75 | 260 S |
| 4.5 | 11,300 | 6.125 | 255 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Feb 5, 2009 | Jan 5, 2009 | — |
| 00 | Feb 29, 2008 | Dec 28, 2007 | Yes |
| 00 | Feb 20, 2008 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Jan 11, 2011. Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| RESISTIVITYSpans Top Lwr Wilcox, Top Lobo Unc, Wills Point | TIFF | 8,510 to 11,308 | Jan 11, 2011run Nov 25, 2007 | 1.68 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-505-35975 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-35975 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/50535975, documented in the API reference.