42-135-43743

PRODUCING Horizontal

MILLIE B LEON B

ECTOR County · District 8 · DIAMONDBACK E&P LLC · SPRABERRY (TREND AREA)

Permits

2

Max Depth

9,150 ft

First Permit

2019-12-16

Latest Activity

2019-12-16

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2020-08-09

Shut-In

Plugged

P-5 Org Status: X

!

EWA / Permit operator mismatch

Scheduling: DIAMONDBACK E&P LLC ≠ Permit: FIREBIRD ENERGY LLC

Resolved via: productionDIAMONDBACK E&P LLC

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2020-08

Last Production

2026-07

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (10) Elevation 2,936 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA BASE (Santa Rosa)1,359 ft+1,577 ft
YATES 3,140 ft-204 ft
SEVEN RIVERS 3,867 ft-931 ft
QUEEN 4,251 ft-1,315 ft
GRAYBURG 4,702 ft-1,766 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)5,116 ft-2,180 ft
GLORIETA 6,120 ft-3,184 ft
CLEARFORK (Clear Fork)7,100 ft-4,164 ft
HOLT
TUBB

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section
42-135-43742 MILLIE B LEON A · FIREBIRD ENERGY LLC
0.0 mi
Santa Rosa 1,357'Yates 3,140'Seven Rivers 3,867'Queen 4,251'Grayburg 4,704'San Andres 5,114'Clear Fork 6,118'Glorieta 7,095'Holt Tubb
42-135-40634 MILLIE B · FDL OPERATING, LLC
0.1 mi
Spraberry 6,426'Clear Fork 7,872'Wolfcamp 9,130'Strawn 11,008'
42-135-43613 MILLIE B LEON · FDL OPERATING, LLC
0.1 mi
Queen 4,241'Grayburg 4,697'San Andres 5,144'Clear Fork 6,510'Spraberry 8,014'Jo Mill 8,489'Santa Rosa Queen Clear Fork Glorieta Grayburg Yates +4 more
42-135-43614 MILLIE B LEON · FDL OPERATING, LLC
0.1 mi
Queen 4,241'Grayburg 4,498'San Andres 5,144'Clear Fork 6,510'Spraberry 8,014'Jo Mill 8,489'San Andres Santa Rosa Clear Fork Grayburg Glorieta Yates +4 more
42-135-43880 FOUR CORNERS 1729 A · FIREBIRD ENERGY LLC
0.2 mi
Yates 3,053'Yates 3,132'Seven Rivers 3,321'Queen 3,394'Grayburg 3,882'Queen 4,243'Grayburg 4,736'San Andres 5,052'San Andres 5,075'Glorieta 6,076'Clear Fork 7,063'Clear Fork 7,098' +5 more
42-135-43881 FOUR CORNERS 1729 B · FIREBIRD ENERGY LLC
0.2 mi
Yates 3,053'Yates 3,132'Seven Rivers 3,333'Queen 3,394'Grayburg 3,882'Queen 4,286'Grayburg 4,724'San Andres 5,052'San Andres 5,117'Glorieta 6,053'Clear Fork 7,098'Clear Fork 7,109' +5 more
42-135-41606 MILLIE B · FDL OPERATING, LLC
0.3 mi
Clear Fork 7,335'Spraberry 8,518'Wolfcamp 9,155'Strawn 11,008'
42-135-40635 MILLIE C · FDL OPERATING, LLC
0.4 mi
San Andres 5,094'Spraberry 8,462'Wolfcamp 9,105'Strawn 11,008'

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (1)

IntervalType
9,696–19,105 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,194 ft837 sx
9.625"8,355 ft1,183 sx
5.5"19,160 ft2,430 sx

Permit History (2)

Applications (2)

#859866 A FIREBIRD ENERGY LLC
received 2022-04-11
#859866 A FIREBIRD ENERGY LLC
received 2019-12-10

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2022-05-06 log on file
Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.

Lat 31.654089
Lon -102.333025

Well Details

Well Number
201H
Max Depth
9,150 ft
Drill Type
Horizontal
County
ECTOR
District
8
Completed
2020-08-09

Operator

Location
MIDLAND
P-5 Status
X (filed 2026-05-04)
Cum Oil (all leases)
986,290,193 bbl
Cum Gas (all leases)
41,995,553 mcf
Activities
GTHS/C, GTHS/O, OPRS/G, OPRS/O
Total Permits
4,969