42-329-34487

Final Completion

PERRO ROJO '44'

MIDLAND County · District 8 · ENDEAVOR ENERGY RESOURCES L.P.

Permits

Max Depth

11,000 ft

First Permit

1998-03-30

Latest Activity

2018-06-27

Lifespan

20 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2003-04

Last Production

2026-06

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.

Oil

production & DCA →

Formation Tops (7) Elevation 2,703 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SPRABERRY	7,575 ft	-4,872 ft
LOWER SPRABERRY (Spraberry)	8,125 ft	-5,422 ft
DEAN	8,875 ft	-6,172 ft
LOWER WOLFCAMP (Wolfcamp)	10,250 ft	-7,547 ft
STRAWN	10,750 ft	-8,047 ft
STRAWN	10,765 ft	-8,062 ft
ATOKA	—	—

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

✓ 42-329-34838 PERRO ROJO '44' · ENDEAVOR ENERGY RESOURCES L.P.

0.3 mi

Spraberry 7,635'Spraberry 8,175'Dean 8,905'Wolfcamp 10,245'Strawn 10,740'Strawn 10,765'Atoka —

✓ 42-329-35039 PERRO ROJO '44' · ENDEAVOR ENERGY RESOURCES L.P.

0.4 mi

Spraberry 7,675'Spraberry 8,225'Dean 8,935'Wolfcamp 9,600'Wolfcamp 10,250'Strawn 10,750'Atoka —

✓ 42-329-35182 PERRO ROJO '44' · ENDEAVOR ENERGY RESOURCES L.P.

0.8 mi

Spraberry 7,650'Wolfcamp 8,200'Spraberry 8,200'Dean 8,925'Strawn 9,275'Wolfcamp 9,275'Wolfcamp 10,225'Strawn 10,710'Atoka —

✓ 42-329-34815 PERRO ROJO '2' · ENDEAVOR ENERGY RESOURCES L.P.

0.8 mi

Spraberry 7,575'Spraberry 7,575'Spraberry 8,125'Spraberry 8,125'Dean 8,860'Wolfcamp 9,225'Wolfcamp 10,250'Strawn 10,250'Strawn 10,650'Bend 11,025'

✓ 42-329-35105 PERRO ROJO '2' · ENDEAVOR ENERGY RESOURCES L.P.

1.0 mi

Spraberry 7,575'Spraberry 7,575'Spraberry 8,140'Spraberry 8,140'Dean 8,875'Wolfcamp 9,500'Wolfcamp 10,300'Strawn 10,740'Strawn 10,775'Atoka —

✓ 42-329-35216 PERRO ROJO '2' · ENDEAVOR ENERGY RESOURCES L.P.

1.4 mi

Spraberry 7,575'Spraberry 7,575'Spraberry 8,125'Spraberry 8,125'Dean 8,860'Wolfcamp 9,500'Wolfcamp 10,300'Strawn 10,785'Atoka —

✓ 42-329-35806 PERRO ROJO '36' · ENDEAVOR ENERGY RESOURCES L.P.

1.4 mi

Spraberry 7,600'Dean 8,925'Wolfcamp 9,275'Strawn 10,700'Strawn 10,725'

✓ 42-329-34893 PERRO ROJO '10' · ENDEAVOR ENERGY RESOURCES L.P.

1.5 mi

Spraberry 7,610'Spraberry 8,175'Dean 8,910'Wolfcamp 9,575'Wolfcamp 10,000'Strawn 10,750'

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 (2)

Interval	Type
7,651–10,345 ft	Perforated
7,651–10,853 ft	Perforated

Casing (4)

Size	Set Depth	Cement
12.75"	285 ft	270 sx
12.75"	285 ft	270 sx
8.625"	4,912 ft	425 sx
4.5"	11,000 ft	1,270 sx

Permit History (4)

#841768 Recompletion Final Completion

PERRO ROJO '44' · 11,000 ft

2018-06-27

#527543 Drill Final Completion

PERRO ROJO "44" · 11,000 ft

2003-01-21

Spud 2003-01-30

#504363 Drill

PERRO ROJO "44" · 11,000 ft

2001-01-22

#474836 Drill

BRADFORD M · 10,500 ft

1998-03-30

Applications (4)

#841768 A ENDEAVOR ENERGY RESOURCES L.P.

received 2018-06-27

#527543 A ENDEAVOR ENERGY RESOURCES L.P.

received 2003-01-21

#504363 A ENDEAVOR ENERGY RESOURCES L.P.

received 2001-01-22

#474836 A PIONEER NATURAL RES. USA, INC.

received 1998-03-30

Records & Logs

3 completion filings on record · 1 with log images at RRC.

W-2/G-1 2018-07-27

W-2/G-1 2003-04-15 log on file

W-2/G-1 2003-05-15

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.

Google Maps → Explorer Map →

Lat 31.765302

Lon -102.010609

Well Details

Well Number: 1
Max Depth: 11,000 ft
Drill Type: Vertical
County: MIDLAND
District: 8
Operator: ENDEAVOR ENERGY RESOURCES L.P.

Operator

Name: ENDEAVOR ENGY RES L.P
Location: MIDLAND
P-5 Status: Active (filed 2026-06-12)
Cum Oil (all leases): 507,205,629 bbl
Cum Gas (all leases): 70,424,421 mcf
Total Permits: 6,190