WELL · 42-135-42521 · DISTRICT 8
Millie B (Alloc) #33H
Ector County · Sallie Ann (Spraberry-Wolfcamp) field · Horizontal
Millie B (Alloc) #33H (API 42-135-42521) is a horizontal well in Ector County operated by Firebird Energy LLC, completed April 3, 2017.
The RRC has issued 2 drilling permits (amended once) between 2013 and 2018, permitted to 9,843 ft.
It was permitted by Fdl Operating, LLC and has since transferred to Firebird Energy LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Abo, Dean, Wolfcamp.
Its 2 leases have reported 85.1K barrels of oil and 74.4K mcf of gas since September 2013, last reporting in July 2026. The leases carry 2 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.
- Based in
- Fort Worth, TX
- P-5 status
- Delinquent (D)
- P-5 last filed
- Apr 26, 2023
- Permits on file
- 152
- Phone
- (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, LLCOct 18, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,843
- total depth, ft
- 3
- permits on file
- Oct 18, 2018
- last permit issued
- Apr 3, 2017
- completed
- 85.1K
- cumulative oil, bbl
- 74.4K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2013 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 3, 2017
- Shut in
- —
- Plugged
- —
Surface location
31.659909, -102.353058
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Millie B (Alloc) O-10-51862 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 31.9K | 45.6K | Jul 2018 – Jul 2026 |
| Millie B (Alloc) O-10-45996 | Sallie Ann (Spraberry-Wolfcamp) | Firebird Energy LLC | 1 | 53.2K | 28.7K | Sep 2013 – Sep 2019 |
Oil, barrels lease total
Last 12 months 647 · prior 12 1,378(-53%)
Gas, mcf lease total
Last 12 months 1,736 · prior 12 7,402(-77%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Production Co, L.P.Nov 2013 → 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 |
|---|---|---|---|---|---|---|
| 843662-99 | Field transfer | FDL Operating, LLC | Aug 16, 2018 | Oct 18, 2018 | Mar 22, 2017 | 9,843 |
| 762657-98 | Drill | Devon Energy Production Co, L.P. | Jul 23, 2013 | Jun 13, 2013 | Jul 25, 2013 | 9,843 |
| 762657-99 | Drill | Devon Energy Production Co, L.P. | May 14, 2013 | Jun 13, 2013 | — | 9,370 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-45996 | — | — | — | — |
| — | — O-10-51862 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,941 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,472 | 15,489 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 350 | 17.5 | 370 S |
| 9.625 | 6,563 | 12.25 | 665 S |
| 5.5 | 15,541 | 8.75 | 2,470 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 | Sep 25, 2019 | Jun 27, 2019 | — |
| 00 | Jul 2, 2018 | May 29, 2018 | — |
| 00 | Apr 15, 2015 | Oct 27, 2014 | 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 42-135-42521 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-42521 → 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 neighbors, subsea-aligned so they line up regardless of surface terrain.
Millie B42-135-41573
0.2 KM · FDL Operating, LLC · Section with this well →
| Clear Fork | 7,602 | -4,660 |
| Dean | 8,932 | -5,990 |
| Wolfcamp | 9,083 | -6,141 |
| Strawn | 11,008 | -8,066 |
Millie B42-135-40586
0.3 KM · FDL Operating, LLC · Section with this well →
| San Andres | 5,056 | -2,113 |
| Spraberry | 8,415 | -5,472 |
| Wolfcamp | 9,078 | -6,135 |
| Strawn | 11,008 | -8,065 |
Millie B42-135-41465
0.3 KM · FDL Operating, LLC · Section with this well →
| Spraberry | 6,346 | -3,405 |
| Spraberry | 8,459 | -5,518 |
| Wolfcamp | 9,111 | -6,170 |
| Strawn | 9,960 | -7,019 |
Millie A42-135-42837
0.4 KM · FDL Operating, LLC · Section with this well →
| Yates | 3,141 | -198 |
| Seven Rivers | 3,418 | -475 |
| Queen | 3,825 | -882 |
| Grayburg | 4,580 | -1,637 |
| San Andres | 4,842 | -1,899 |
| Glorieta | 5,848 | -2,905 |
| Clear Fork | 6,089 | -3,146 |
| Santa Rosa | — |
17 TOPS · FIRST 8
Millie B42-135-41562
0.6 KM · FDL Operating, LLC · Section with this well →
| Spraberry | 6,632 | -3,693 |
| Spraberry | 8,548 | -5,609 |
| Wolfcamp | 9,171 | -6,232 |
| Strawn | 11,008 | -8,069 |
Millie A42-135-40566
0.6 KM · FDL Operating, LLC · Section with this well →
| San Andres | 5,035 | -2,091 |
| Spraberry | 6,313 | -3,369 |
| Wolfcamp | 9,076 | -6,132 |
| Strawn | 11,008 | -8,064 |
Millie B42-135-42119
0.6 KM · FDL Operating, LLC · Section with this well →
| Spraberry | 7,321 | -4,378 |
| Abo | 8,764 | -5,821 |
| Wolfcamp | 9,345 | -6,402 |
| Cisco | 9,905 | -6,962 |
Millie A42-135-41566
0.6 KM · FDL Operating, LLC · Section with this well →
| Clear Fork | 7,272 | -4,328 |
| Spraberry | 8,409 | -5,465 |
| Wolfcamp | 9,036 | -6,092 |
| Strawn | 11,008 | -8,064 |
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/13542521, documented in the API reference.