WELL · 42-135-40568 · DISTRICT 8
Millie B #23
Ector County · Sallie Ann (Spraberry-Wolfcamp) field · Vertical
Millie B #23 (API 42-135-40568) is a well in Ector County operated by Fdl Operating LLC, completed November 9, 2011.
The RRC has issued 2 drilling permits between 2010 and 2018, permitted to 10,500 ft.
Completion filings report 3 formation tops, including San Andres, Spraberry, Wolfcamp.
Its 2 leases have reported 194K barrels of oil and 447K mcf of gas since July 2011, last reporting in July 2026. The leases carry 34 wells, so these are lease totals, not this well alone.
Operator of record
Judson, TX · P-5 Y, filed Jul 7, 2023 · 182 permits on file · (800) 773-1203
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | FDL Operating LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | FDL Operating, LLCAug 15, 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 15, 2018
- last permit issued
- Nov 9, 2011
- completed
- 194K
- cumulative oil, bbl
- 447K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 9, 2011
- Shut in
- —
- Plugged
- —
Surface location
31.652667, -102.357833
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 34 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Millie B O-10-51251 | Spraberry (Trend Area) | Diamondback E&P LLC | 17 | 107K | 268K | Jul 2018 – Jul 2026 |
| Millie B O-10-41742 | Sallie Ann (Spraberry-Wolfcamp) | FDL Operating, LLC | 17 | 87K | 179K | Jul 2011 – Jun 2019 |
Oil, barrels lease total
Last 12 months 5,837 · prior 12 7,132(-18%)
Gas, mcf lease total
Last 12 months 22,678 · prior 12 26,167(-13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Production Co, L.P.Sep 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 |
|---|---|---|---|---|---|---|
| 843495-99 | Field transfer | FDL Operating, LLC | Aug 13, 2018 | Aug 15, 2018 | Jun 10, 2011 | 10,500 |
| 702741-99 | Drill | Devon Energy Production Co, L.P. | Sep 24, 2010 | Sep 29, 2010 | Jun 7, 2011 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-41742 | — | — | — | — |
| — | — O-10-51251 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,939 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,968 | -2,029 |
| SpraberryUPPER SPRABERRY | 6,272 | -3,333 |
| Wolfcamp | 8,944 | -6,005 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,491 | 9,733 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 319 | 14.75 | 140 S |
| 8.625 | 4,800 | 11 | 1,175 S |
| 5.5 | 10,096 | 7.875 | 740 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 | Apr 24, 2019 | Apr 3, 2019 | Yes |
| 00 | Nov 20, 2012 | Jan 12, 2012 | 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 42-135-40568 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-40568 → 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.
Millie B42-103-35901
0.6 KM · FDL Operating, LLC · Section with this well →
| Spraberry | 6,614 | -3,687 |
| Spraberry | 8,349 | -5,422 |
| Wolfcamp | 9,798 | -6,871 |
| Strawn | 9,798 | -6,871 |
Millie B42-135-41465
0.6 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 B42-135-41570
0.8 KM · FDL Operating, LLC · Section with this well →
| Spraberry | 6,682 | -3,736 |
| Spraberry | 8,489 | -5,543 |
| Wolfcamp | 9,105 | -6,159 |
| Darlin(strawn) | 9,970 | -7,024 |
| Bradford Ranch (Atoka) | 10,090 | -7,144 |
| Strawn | 11,008 | -8,062 |
Millie B42-135-40567
0.8 KM · FDL Operating, LLC · Section with this well →
| Clear Fork | 7,560 | -4,615 |
| Wolfcamp | 9,054 | -6,109 |
| Wolfcamp | 9,296 | -6,351 |
Millie A42-135-42837
0.9 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 |
| Devonian | — |
17 TOPS · FIRST 8
Millie B42-135-40587
0.9 KM · FDL Operating, LLC · Section with this well →
| Clear Fork | 6,099 | -3,159 |
| Spraberry | 8,398 | -5,458 |
| Wolfacmp | 9,054 | -6,114 |
| Strawn | 9,854 | -6,914 |
Millie B42-135-40586
0.9 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 B (Alloc)42-135-42521
0.9 KM · FDL Operating, LLC · Section with this well →
| Abo | 8,766 | -5,825 |
| Dean | 8,960 | -6,019 |
| Wolfcamp | 9,147 | -6,206 |
| Wolfcamp | 9,282 | -6,341 |
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/13540568, documented in the API reference.