WELL · 42-135-40501 · DISTRICT 8
Leon #9
Ector County · Sallie Ann (Spraberry-Wolfcamp) field · Vertical
Leon #9 (API 42-135-40501) is a well in Ector County operated by Firebird Energy LLC, completed December 14, 2016.
The RRC has issued 2 drilling permits between 2010 and 2018, permitted to 10,500 ft.
It was permitted by Fdl Operating, LLC and has since transferred to Firebird Energy LLC on the wellbore schedule.
Completion filings report 4 formation tops, including San Andres, Spraberry, Wolfcamp, Strawn.
Its 2 leases have reported 228K barrels of oil and 365K mcf of gas since April 2011, last reporting in July 2026. The leases carry 15 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by FDL Operating, LLC; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed Mar 4, 2026 · 152 permits on file · (817) 857-7800
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Firebird Energy LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | FDL Operating, LLCAug 14, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,500
- total depth, ft
- 2
- permits on file
- Aug 14, 2018
- last permit issued
- Dec 14, 2016
- completed
- 228K
- cumulative oil, bbl
- 365K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Dec 14, 2016
- Shut in
- —
- Plugged
- —
Surface location
31.676332, -102.338492
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Ector County.
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 15 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Leon O-10-51810 | Spraberry (Trend Area) | Diamondback E&P LLC | 7 | 62.2K | 103K | Jul 2018 – Jul 2026 |
| Leon O-10-41558 | Sallie Ann (Spraberry-Wolfcamp) | Firebird Energy LLC | 8 | 165K | 262K | Apr 2011 – Sep 2019 |
Oil, barrels lease total
Last 12 months 4,012 · prior 12 5,291(-24%)
Gas, mcf lease total
Last 12 months 8,074 · prior 12 8,492(-5%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Production Co, L.P.Jul 2011 → Jul 2016
- 2FDL Operating, LLCAug 2016 → Jun 2019
- 3Firebird Energy LLCJul 2019 → Nov 2022
- 4Diamondback E&P LLCDec 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 843454-99 | Field transfer | FDL Operating, LLC | Aug 13, 2018 | Aug 14, 2018 | Sep 29, 2010 | 10,500 |
| 700958-99 | Drill | Devon Energy Production Co, L.P. | Aug 19, 2010 | Aug 23, 2010 | Sep 23, 2010 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-41558 | — | — | — | — |
| — | — O-10-51810 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,934 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 5,007 | -2,073 |
| SpraberryUPPER SPRABERRY | 8,549 | -5,615 |
| Wolfcamp | 9,180 | -6,246 |
| Strawn | 11,008 | -8,074 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,050 | 10,029 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 319 | 14.75 | 140 S |
| 8.625 | 4,667 | 11 | 1,139 S |
| 5.5 | 10,260 | 7.875 | 905 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 | Oct 1, 2019 | May 28, 2019 | — |
| 00 | Dec 6, 2018 | Nov 12, 2018 | — |
| 00 | Jun 22, 2012 | Sep 9, 2011 | 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 42-135-40501 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-40501 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Leon42-135-41585
0.5 KM · FDL Operating, LLC · Section with this well →
| Spraberry | 8,501 | -5,616 |
| Wolcamp | 9,163 | -6,278 |
| Wolfcamp | 9,163 | -6,278 |
| Wolfcamp | 9,426 | -6,541 |
| Strawn | 10,184 | -7,299 |
Leon42-135-42114
0.6 KM · FDL Operating, LLC · Section with this well →
| San Andres | 4,782 | -1,845 |
| Clear Fork | 6,077 | -3,140 |
| Clear Fork | 6,077 | -3,140 |
| Wolfcamp | 9,143 | -6,206 |
| Strawn | 11,008 | -8,071 |
Sherry42-135-39514
0.8 KM · Firebird Energy LLC · Section with this well →
| San Andres | 4,884 | -1,956 |
| Glorieta | 5,803 | -2,875 |
| Clear Fork | 5,994 | -3,066 |
| Clear Fork | 5,994 | -3,066 |
| Spraberry | 6,312 | -3,384 |
| Dean | 9,049 | -6,121 |
| Wolfcamp | 9,116 | -6,188 |
Leon42-135-40560
0.8 KM · FDL Operating, LLC · Section with this well →
| Clear Fork | 7,381 | -4,444 |
| Spraberry | 8,519 | -5,582 |
| Wolfcamp | 9,227 | -6,290 |
| Strawn | 11,008 | -8,071 |
Leon42-135-41377
1.0 KM · FDL Operating, LLC · Section with this well →
| Clear Fork | 7,645 | -4,708 |
| Spraberry | 8,514 | -5,577 |
| Wolfcamp | 9,182 | -6,245 |
| Strawn | 11,008 | -8,071 |
Leon42-135-40614
1.0 KM · FDL Operating, LLC · Section with this well →
| San Andres | 5,022 | -2,081 |
| Spraberry | 8,511 | -5,570 |
| Wolfcamp | 9,170 | -6,229 |
| Strawn | 11,008 | -8,067 |
Sherry42-135-39423
1.3 KM · Firebird Energy LLC · Section with this well →
| Spraberry | 7,874 | -4,938 |
| Dean | 9,059 | -6,123 |
| Wolfcamp | 9,131 | -6,195 |
| Strawn | 10,216 | -7,280 |
Millie B42-135-40624
1.3 KM · FDL Operating, LLC · Section with this well →
| San Andres | 5,089 | -2,154 |
| San Andres | 5,089 | -2,154 |
| Spraberry | 6,443 | -3,508 |
| Wolfcamp | 9,191 | -6,256 |
| Grayburg | — | |
| Glorieta | — | |
| Clear Fork | — | |
| Yates | — |
13 TOPS · FIRST 8
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/13540501, documented in the API reference.