42-329-31590

Final Completion

WILLIS 44

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

Permits

Max Depth

12,000 ft

First Permit

1985-09-06

Latest Activity

2002-07-31

Lifespan

17 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2003-02-01

Shut-In

—

Plugged

2014-08-21

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

1993-01

Last Production

2026-07

Operator History

Chain of Custody

BROWN, TOM INC. 1993-1995→ 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 (11) Elevation 2,675 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SPRABERRY	7,428 ft	-4,753 ft
SPRABERRY	7,435 ft	-4,760 ft
DEAN	8,794 ft	-6,119 ft
DEAN	8,810 ft	-6,135 ft
WOLFCAMP	8,980 ft	-6,305 ft
WOLFCAMP TOP (Wolfcamp)	9,003 ft	-6,328 ft
STRAWN	10,442 ft	-7,767 ft
TOP STRAWN (Strawn)	10,445 ft	-7,770 ft
ATOKA	10,650 ft	-7,975 ft
DESPERADO ATOKA	10,956 ft	-8,281 ft
L. SPRABERRY	82,210 ft	-79,535 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 (2)

Interval	Type
7,439–10,393 ft	Perforated
10,956–10,976 ft	Perforated

Casing (5)

Size	Set Depth	Cement
13.375"	375 ft	325 sx
9.625"	4,175 ft	800 sx
4.5"	9,430 ft	940 sx
7"	9,900 ft	1,325 sx
7"	9,900 ft	1,326 sx

Permit History (2)

#522389 Reenter Final Completion

WILLIS "44" · 12,000 ft

2002-07-31

Spud 2002-09-05

#284167 Drill Final Completion

WILLIS · 11,250 ft

1985-09-06

Spud 1985-09-18

Applications (2)

#522389 A ENDEAVOR ENERGY RESOURCES L.P.

received 2002-07-31

#284167 A BROWN, TOM INC.

received 1985-09-05

Records & Logs

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

W-2/G-1 2003-02-25 log on file

W-2/G-1 2003-05-16

W-2/G-1 1985-12-20 log on file

W-2/G-1 1986-01-01

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: 5
Max Depth: 12,000 ft
Drill Type: Vertical
County: MIDLAND
District: 8
Operator: DIAMONDBACK E&P LLC
Completed: 2003-02-01

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