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WILLIS 44

MIDLAND County · District 8 · DIAMONDBACK E&P LLC · STO-WIL (FUSSELMAN)

Permits

Max Depth

13,000 ft

First Permit

2004-12-21

Latest Activity

2017-03-09

Lifespan

12 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2005-05-17

Shut-In

—

Plugged

—

P-5 Org Status: X

EWA / Permit operator mismatch

Scheduling: DIAMONDBACK E&P LLC ≠ Permit: ENDEAVOR ENERGY RESOURCES L.P.

Resolved via: production → DIAMONDBACK E&P LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2003-02

Last Production

2026-07

Operator History

Chain of Custody

ENDEAVOR ENERGY RESOURCES L.P. 2003-2024→ DIAMONDBACK E&P LLC 2025-2026

Lease Production

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

Formation Tops (12) Elevation 2,704 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SPRABERRY	7,450 ft	-4,746 ft
LOWER SPRABERRY (Spraberry)	8,000 ft	-5,296 ft
L. SPRABERRY	8,000 ft	-5,296 ft
DEAN	8,800 ft	-6,096 ft
WOLFCAMP	9,300 ft	-6,596 ft
LOWER WOLFCAMP LIME (Wolfcamp)	10,175 ft	-7,471 ft
WOLFCAMP	10,175 ft	-7,471 ft
STRAWN	10,400 ft	-7,696 ft
ATOKA "D" (Atoka)	10,925 ft	-8,221 ft
MISS (Mississippian)	11,360 ft	-8,656 ft
DEVONIAN	11,515 ft	-8,811 ft
FUSSELMAN	12,025 ft	-9,321 ft

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 ↗

Perforations (3)

Interval	Type
8,027–9,841 ft	Perforated
8,027–10,970 ft	Perforated
12,070–12,074 ft	Perforated

Casing (4)

Size	Set Depth	Cement
12.75"	417 ft	300 sx
8.625"	4,792 ft	425 sx
4.5"	12,179 ft	1,325 sx
4.5"	—	1,325 sx

Permit History (4)

#823826 Recompletion Final Completion

WILLIS '44' · 12,185 ft

2017-03-09

#648898 Recompletion Final Completion

WILLIS "44" · 13,000 ft

2007-11-09

Spud 2007-12-18

#555079 Drill Final Completion

WILLIS "44" · 13,000 ft

2005-06-09

Spud 2005-04-06

#555079 Drill

WILLIS "44" · 12,000 ft

2004-12-21

Spud 2005-04-06

Applications (4)

#823826 A ENDEAVOR ENERGY RESOURCES L.P.

received 2017-02-28

#648898 A ENDEAVOR ENERGY RESOURCES L.P.

received 2007-11-01

#555079 A ENDEAVOR ENERGY RESOURCES L.P.

received 2005-06-08

#555079 A ENDEAVOR ENERGY RESOURCES L.P.

received 2004-12-20

Records & Logs

5 completion filings on record · 2 with log images at RRC.

W-2/G-1 2017-03-18

W-2/G-1 2008-02-28 log on file

W-2/G-1 2008-06-18

W-2/G-1 2005-06-17 log on file

W-2/G-1 2005-12-09

Completion packets + logs ↗ Wellbore filings ↗

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

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in MIDLAND County.

Well Details

Well Number: 6
Max Depth: 13,000 ft
Drill Type: Vertical
County: MIDLAND
District: 8
Operator: DIAMONDBACK E&P LLC
Completed: 2005-05-17

Operator

Name: DIAMONDBACK E&P LLC
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: 4,977