WELL · 42-135-40740 · DISTRICT 8

Millie B #16

Ector County · Sallie Ann (Spraberry-Wolfcamp) field · Vertical

Millie B #16 (API 42-135-40740) is a well in Ector County operated by Fdl Operating LLC, completed February 7, 2012.

The RRC has issued 2 drilling permits between 2011 and 2018, permitted to 10,500 ft.

Completion filings report 3 formation tops, including Clear Fork, 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

FDL Operating LLC

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
Feb 7, 2012: 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: Feb 7, 2012
Shut in: —
Plugged: —

Surface location

31.655885, -102.345863

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
843505-99	Field transfer	FDL Operating, LLC	Aug 13, 2018	Aug 15, 2018	Oct 21, 2011	10,500
708510-99	Drill	Devon Energy Production Co, L.P.	Jan 13, 2011	Jan 18, 2011	Nov 4, 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 2,940 ft elevation.Download CSV →

Formation	MD ft	Subsea
Clear Fork	6,210	-3,270
Spraberry	8,543	-5,603
Wolfcamp	9,171	-6,231

Perforations

Perforated and open-hole intervals.

From	To	Type
7,619	9,801	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
12.75	319	14.75	140 S
8.625	4,850	11	1,211 S
5.5	10,015	7.875	840 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 30, 2019	May 30, 2012	Yes
00	Jul 9, 2013	May 30, 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 42-135-40740 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-135-40740 → 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.

Open the cross-section →

Millie B42-135-42119

0.3 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 B42-135-41570

0.4 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 B42-135-40626

0.5 KM · FDL Operating, LLC · Section with this well →

San Andres	5,096	-2,156
Spraberry	6,404	-3,464
Wolfcamp	9,159	-6,219
Strawn	11,008	-8,068

Millie B42-135-40586

0.6 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 B42-135-40587

0.6 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 B42-135-41371

0.6 KM · FDL Operating, LLC · Section with this well →

Spraberry	6,678	-3,745
Clear Fork	7,576	-4,643
Wolfcamp	9,111	-6,178
Strawn	11,008	-8,075

Millie B42-135-41562

0.8 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 B (Alloc)42-135-42521

0.8 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/13540740, documented in the API reference.