42-317-40784

PRODUCING Horizontal

COX 12-9 UNIT 1

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

Permits

2

Max Depth

11,000 ft

First Permit

2017-03-28

Latest Activity

2017-03-28

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2023-01-19

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 2,834 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 1,000 ft+1,834 ft
YATES 2,750 ft+84 ft
QUEEN 3,505 ft-671 ft
GRAYBURG 4,283 ft-1,449 ft
SAN ANDRES - ACTIVE CO2 FLOOD; H (San Andres)4,350 ft-1,516 ft
CISCO 5,276 ft-2,442 ft
SPRABERRY 8,015 ft-5,181 ft
DEAN 9,078 ft-6,244 ft
WOLFCAMP 9,780 ft-6,946 ft
PENNSYLVANIAN

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
42-317-45619 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 mi
Santa Rosa 1,000'Yates 2,753'Queen 3,617'Grayburg 3,968'San Andres 4,725'Clear Fork 6,470'Spraberry 7,789'Cisco Pennsylvanian Wolfcamp Dean
42-317-45620 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 mi
Santa Rosa 1,000'Yates 2,755'Queen 3,620'Grayburg 3,973'San Andres 4,732'Clear Fork 6,472'Spraberry 7,791'Pennsylvanian Wolfcamp Dean Cisco
42-317-45617 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 mi
Santa Rosa 1,000'Yates 2,755'Queen 3,619'Grayburg 3,970'San Andres 4,731'Spraberry 7,791'Mississippian PRECAMBRIAN (UNDIFFERENTIATED) Fusselman Silurian (undifferentiated) Ellenburger Devonian +4 more
42-317-45616 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 mi
Santa Rosa 1,000'Yates 2,755'Queen 3,620'Grayburg 3,792'Grayburg 3,972'San Andres 4,732'Clear Fork 6,481'Spraberry 7,805'Cisco Wolfcamp Pennsylvanian Dean
42-317-45615 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 mi
Santa Rosa 1,000'Yates 2,757'Queen 3,604'Grayburg 3,982'San Andres 4,733'Spraberry 7,779'Cisco Pennsylvanian Wolfcamp Dean
42-317-45618 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 mi
Santa Rosa 1,000'Yates 2,754'Queen 3,620'Grayburg 3,972'San Andres 4,732'Clear Fork 6,472'Spraberry 7,794'Dean Ellenburger Pennsylvanian Wolfcamp Cisco
42-317-45621 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 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 Dean Silurian (undifferentiated) Devonian Pennsylvanian +3 more
42-317-45622 COX 12-9 UNIT 1 · ENDEAVOR ENERGY RESOURCES L.P.
0.2 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'Dean Pennsylvanian Wolfcamp Cisco

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
10,130–17,751 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,890 ft1,640 sx
9.625"9,046 ft1,365 sx
5.5"17,875 ft2,300 sx

Permit History (2)

Applications (2)

#824811 A ENDEAVOR ENERGY RESOURCES L.P.
received 2017-04-20
#824811 A ENDEAVOR ENERGY RESOURCES L.P.
received 2017-03-24

Records & Logs

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

W-2/G-1 2023-10-02
W-2/G-1 2018-12-14 log on file
W-2/G-1 2017-10-25 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 32.305274
Lon -102.005548

Well Details

Well Number
222
Max Depth
11,000 ft
Drill Type
Horizontal
County
MARTIN
District
8
Completed
2023-01-19

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