42-115-33152

PRODUCING

PETERS 21

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

Permits

Max Depth

12,000 ft

First Permit

2005-11-02

Latest Activity

2017-12-13

Lifespan

12 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2008-02-25

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

2005-07

Last Production

2026-07

Operator History

Chain of Custody

ENDEAVOR ENERGY RESOURCES L.P. 2005-2024→ 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 (8) Elevation 2,866 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SPRABERRY	7,775 ft	-4,909 ft
LOWER SPRABERRY (Spraberry)	8,325 ft	-5,459 ft
DEAN	9,175 ft	-6,309 ft
WOLFCAMP LIME (Wolfcamp)	9,400 ft	-6,534 ft
STRAWN LIME (Strawn)	10,668 ft	-7,802 ft
STRAWN LIME (Strawn)	10,700 ft	-7,834 ft
BASE STRAWN LIME (Strawn)	10,950 ft	-8,084 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

✓ 42-115-33121 PETERS '25' · ENDEAVOR ENERGY RESOURCES L.P.

0.4 mi

Spraberry 7,775'Spraberry 8,315'Wolfcamp 10,000'Strawn 10,670'Strawn 10,875'Atoka —

✓ 42-317-34539 PETERS '21' · ENDEAVOR ENERGY RESOURCES L.P.

0.4 mi

Clear Fork 5,950'Spraberry 7,780'Spraberry 8,325'Dean 9,125'Wolfcamp 9,400'Strawn 10,650'

✓ 42-317-30746 PETERS '20' · ENDEAVOR ENERGY RESOURCES L.P.

0.5 mi

Spraberry 7,750'Spraberry 8,275'Wolfcamp 10,000'Strawn 10,300'Atoka —

✓ 42-115-33151 PETERS '25' · ENDEAVOR ENERGY RESOURCES L.P.

0.6 mi

Spraberry 7,775'Spraberry 8,325'Wolfcamp 10,000'Strawn 10,675'Strawn 10,710'Atoka —

✓ 42-317-34616 PETERS '20' · ENDEAVOR ENERGY RESOURCES L.P.

0.8 mi

Yates 2,675'San Andres 5,100'Clear Fork 7,625'Spraberry 7,790'Wolfcamp 10,050'Wolfcamp 10,050'Strawn 10,625'Atoka —

✓ 42-115-33815 TRIGGER 19-18 · RELIANCE ENERGY, INC.

1.7 mi

Yates 2,955'San Andres 4,849'San Andres 4,849'Spraberry 7,797'Dean 9,164'Wolfcamp 9,285'Devonian —Silurian (undifferentiated) —Mississippian —Canyon —Pennsylvanian —

✓ 42-115-33939 PULA 29 SWD · STONEHILL CULBERSON, LLC

2.0 mi

Rustler 1,878'Salado 1,953'Tansill 2,539'Yates 2,648'Seven Rivers 2,865'Queen 3,819'Grayburg 4,343'San Andres 4,618'Glorieta 5,171'Clear Fork 5,685'

✓ 42-317-35290 RICHARDS '45' · ENDEAVOR ENERGY RESOURCES L.P.

2.7 mi

Clear Fork 5,750'Spraberry 7,550'Dean 8,950'Wolfcamp 9,250'Strawn 10,525'Mississippian 10,775'Woodford 11,600'

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
8,333–10,601 ft	Perforated
8,333–10,895 ft	Perforated

Casing (3)

Size	Set Depth	Cement
12.75"	385 ft	380 sx
8.625"	5,343 ft	700 sx
4.5"	11,020 ft	1,440 sx

Permit History (2)

#833368 Recompletion Final Completion

PETERS '21' · 11,020 ft

2017-12-13

#608783 Drill Final Completion

PETERS "21" · 12,000 ft

2005-11-02

Spud 2007-06-08

Applications (2)

#833368 A ENDEAVOR ENERGY RESOURCES L.P.

received 2017-11-17

#608783 A ENDEAVOR ENERGY RESOURCES L.P.

received 2005-11-01

Records & Logs

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

W-2/G-1 2018-04-03

W-2/G-1 2007-11-15 log on file

W-2/G-1 2008-02-01

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.

Google Maps → Explorer Map →

Lat 32.524658

Lon -102.001690

Well Details

Well Number: 4
Max Depth: 12,000 ft
Drill Type: Vertical
County: DAWSON
District: 8
Operator: DIAMONDBACK E&P LLC
Completed: 2008-02-25

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: 4,969