42-317-45623

SHUT IN Horizontal

COX 12-9 UNIT 1

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

Permits

1

Max Depth

10,802 ft

First Permit

2023-09-25

Latest Activity

2023-09-25

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-11-26

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: productionDIAMONDBACK E&P LLC

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2017-08

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 2,827 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 1,000 ft+1,827 ft
YATES 2,757 ft+70 ft
QUEEN 3,622 ft-795 ft
GRAYBURG 3,977 ft-1,150 ft
SAN ANDRES - ACTIVE CO2 FLOOD; H (San Andres)4,735 ft-1,908 ft
CLEARFORK, UPPER (Clear Fork)6,477 ft-3,650 ft
SPRABERRY 7,799 ft-4,972 ft
CISCO
DEAN
WOLFCAMP

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
42-317-45625 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 2,758'Queen 3,621'Grayburg 3,981'San Andres 4,738'Clear Fork 6,481'Spraberry 7,793'Dean 9,123'Wolfcamp 9,362'Cisco Pennsylvanian
42-317-45622 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 2,756'Queen 3,622'Grayburg 3,975'San Andres 4,739'Clear Fork 6,477'Spraberry 7,806'Pennsylvanian Wolfcamp Cisco Dean
42-317-45624 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 2,757'Queen 3,622'Grayburg 3,976'San Andres 4,737'Clear Fork 6,475'Spraberry 7,801'Dean Pennsylvanian Wolfcamp Cisco
42-317-45621 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 2,757'Queen 3,623'Grayburg 3,977'San Andres 4,739'Clear Fork 6,476'Spraberry 7,793'Mississippian Cisco Silurian (undifferentiated) Devonian Pennsylvanian +3 more
42-317-42247 PIER 21-24 D · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 1,861'Queen 2,300'Grayburg 4,258'San Andres 4,481'Cisco 6,491'Spraberry 8,126'Wolfcamp Pennsylvanian Dean
42-317-42246 PIER 21-24 D · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 1,861'Queen 2,300'Grayburg 4,258'San Andres 4,481'Cisco 6,491'Spraberry 8,129'Dean 8,775'Wolfcamp 9,461'Pennsylvanian
42-317-42245 PIER 21-24 C · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 1,861'Queen 2,300'Grayburg 4,258'San Andres 4,481'Cisco 6,491'Spraberry 8,113'Wolfcamp Pennsylvanian Dean
42-317-42244 PIER 21-24 C · ENDEAVOR ENERGY RESOURCES L.P.
0.0 mi
Santa Rosa 1,000'Yates 1,861'Queen 2,300'Grayburg 4,258'San Andres 4,481'Cisco 6,491'Spraberry 8,116'Dean 9,180'Wolfcamp 9,312'Pennsylvanian

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
8,567–16,278 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,933 ft1,515 sx
9.625"6,678 ft1,825 sx
5.5"16,303 ft1,905 sx

Permit History (1)

Applications (1)

#893738 A ENDEAVOR ENERGY RESOURCES L.P.
received 2023-09-14

Records & Logs

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

W-2/G-1 2025-03-14
W-2/G-1 2024-06-27 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 32.302622
Lon -102.006077

Well Details

Well Number
142
Max Depth
10,802 ft
Drill Type
Horizontal
County
MARTIN
District
8
Completed
2024-11-26

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