WELL · 42-461-33479 · DISTRICT 7
McElroy Ranch Company #1481
Upton County · Corvette (Wolfcamp) field · Vertical
Mcelroy Ranch Company #1481 (API 42-461-33479) is a well in Upton County operated by Firebird Energy II LLC, completed April 10, 1994.
The RRC has issued 2 drilling permits between 1994 and 2010, permitted to 11,000 ft.
It was permitted by Chevron U. S. A. Inc. and has since transferred to Firebird Energy II LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Mcelroy, Clear Fork, Wolfcamp, Strawn.
Its 2 leases have reported 237K barrels of oil and 694K mcf of gas since April 1994, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Chevron U. S. A. Inc.; the EWA schedule now lists a different operator.
- Based in
- Fort Worth, TX
- P-5 status
- Active (A)
- P-5 last filed
- Aug 12, 2024
- Permits on file
- 272
- Phone
- (817) 857-7800
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Firebird Energy II LLC |
| Production reports | Firebird Energy II LLCthrough Apr 2026 |
| Latest permit | Chevron U. S. A. Inc.Mar 31, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,000
- total depth, ft
- 2
- permits on file
- Mar 31, 2010
- last permit issued
- Apr 10, 1994
- completed
- 237K
- cumulative oil, bbl
- 694K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 1994 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 10, 1994
- 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| McElroy Ranch Company O-9-13608 | Corvette (Wolfcamp) | Firebird Energy II LLC | 2 | 216K | 605K | Apr 1994 – Jul 2026 |
| McElroy Ranch Company O-9-19094 | Spraberry (Trend Area) | Firebird Energy II LLC | 1 | 21.2K | 89.1K | Sep 2012 – Jul 2026 |
Gas, mcf lease total
Last 12 months 1,505 · prior 12 1,626(-7%)
Oil, barrels lease total
Last 12 months 417 · prior 12 55(+658%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chevron U. S. A. Inc.Apr 1994 → May 2025
- 2Firebird Energy II LLCJun 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 693523-99 | Recompletion | Chevron U. S. A. Inc. | Mar 25, 2010 | Mar 31, 2010 | May 29, 2012 | 10,300 |
| 421703-99 | Drill | Chevron U. S. A. Inc. | Mar 3, 1994 | Mar 9, 1994 | Mar 10, 1994 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-13608 | — | — | — | — |
| — | — O-9-19094 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,732 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| McElroy | 4,511 | -1,779 |
| Clear ForkCLEARFORK | 6,562 | -3,830 |
| Wolfcamp | 8,182 | -5,450 |
| Strawn | 10,256 | -7,524 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,900 | 8,192 | Perforated |
| 8,616 | 8,686 | Perforated |
| 8,786 | 8,968 | Perforated |
| 9,217 | 9,394 | Perforated |
| 9,746 | 9,757 | Perforated |
| 9,768 | 9,776 | Perforated |
| 9,781 | 9,793 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.75 | 510 | 14.75 | 300 S |
| 11.75 | 510 | 14.75 | 300 S |
| 8.625 | 4,870 | 11 | 1,225 S |
| 5.5 | 10,300 | 7.875 | 1,300 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 | Nov 10, 2015 | Sep 29, 2015 | — |
| 00 | May 11, 1995 | Apr 27, 1995 | — |
| 00 | Jul 12, 1994 | Apr 19, 1994 | Yes |
| 00 | May 2, 1994 | — | — |
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 42-461-33479 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-33479 → 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/46133479, documented in the API reference.