WELL · 42-461-36025 · DISTRICT 7
Railway Ranch 30 #4
Upton County · Spraberry (Trend Area) field · Producing · Vertical
Railway Ranch 30 #4 (API 42-461-36025) is a well in Upton County operated by Winn Operating LLC, completed December 10, 2008 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued August 2, 2008, permitted to 10,800 ft.
It was permitted by Terrace Petroleum Corporation and has since transferred to Winn Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Dean, Wolfcamp.
Its lease has reported 1.04M barrels of oil and 6.04M mcf of gas since April 2008, last reporting in July 2026. The lease carries 16 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Terrace Petroleum Corporation; the EWA schedule now lists a different operator.
Kilgore, TX · P-5 Y, filed Oct 4, 2025 · 1 permits on file · (281) 783-8866
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Winn Operating LLC |
| Production reports | Winn Operating, LLCthrough Apr 2026 |
| Latest permit | Terrace Petroleum CorporationAug 2, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,800
- total depth, ft
- 1
- permits on file
- Aug 2, 2008
- last permit issued
- Dec 10, 2008
- completed
- 1.04M
- cumulative oil, bbl
- 6.04M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2008 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 10, 2008
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 16 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Railway Ranch "30" O-9-16555 | Spraberry (Trend Area) | Winn Operating, LLC | 16 | 1.04M | 6.04M | Apr 2008 – Jul 2026 |
Oil, barrels lease total
Last 12 months 22,689 · prior 12 13,128(+73%)
Gas, mcf lease total
Last 12 months 78,312 · prior 12 53,551(+46%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Terrace Petroleum CorporationApr 2008 → Dec 2009
- 2COG Operating LLCJan 2010 → May 2025
- 3Winn Operating, LLCJun 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 666660-99 | Drill | Terrace Petroleum Corporation | Jul 14, 2008 | Aug 2, 2008 | Oct 4, 2008 | 10,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-16555 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,849 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,722 | 10,498 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 400 | 17.5 | 445 S |
| 8.625 | 4,922 | 11 | 400 S |
| 5.5 | 10,700 | 7.875 | 1,150 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 | Feb 11, 2009 | Jan 9, 2009 | Yes |
| 00 | Jan 13, 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 42-461-36025 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-36025 → 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/46136025, documented in the API reference.