42-389-37213

PRODUCING Horizontal

TUMBLER STATE F

REEVES County · District 8 · U.S. ENERGY DEVELOPMENT CORP · WOLFBONE (TREND AREA)

Permits

1

Max Depth

10,900 ft

First Permit

2018-06-27

Latest Activity

2018-06-27

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2019-08-19

Shut-In

Plugged

P-5 Org Status: Active

!

EWA / Permit operator mismatch

Scheduling: U.S. ENERGY DEVELOPMENT CORP ≠ Permit: COG OPERATING LLC

Resolved via: productionU.S. ENERGY DEVELOPMENT CORP

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2019-08

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 2,595 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
FORD-DELAWARE (Delaware)2,500 ft+95 ft
CASTILLE (Castile)2,800 ft-205 ft
BELL CANYON 5,031 ft-2,436 ft
DELAWARE 5,031 ft-2,436 ft
CHERRY CANYON 5,954 ft-3,359 ft
DELAWARE CONSOLIDATED GAS (Delaware)6,500 ft-3,905 ft
BONE SPRINGS (Bone Spring)8,136 ft-5,541 ft
WOLFCAMP 10,669 ft-8,074 ft
PENNSYLVANIAN
PERMIAN (Permian (undifferentiated))

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
42-389-37203 TUMBLER STATE D · COG OPERATING LLC
0.0 mi
Delaware 2,500'Castile 2,800'Delaware 5,034'Bell Canyon 5,034'Cherry Canyon 5,963'Delaware 6,500'Bone Spring 6,981'Bone Spring 8,967'Bone Spring 9,679'Bone Spring 10,395'
42-389-37214 TUMBLER STATE G · COG OPERATING LLC
0.0 mi
Delaware 2,500'Castile 2,800'Delaware 4,953'Bell Canyon 4,992'Cherry Canyon 5,917'Delaware 6,500'Bone Spring 8,111'Wolfcamp 10,651'Permian (undifferentiated) Pennsylvanian
42-389-37212 TUMBLER STATE E · COG OPERATING LLC
0.0 mi
Delaware 2,500'Castile 2,800'Delaware 4,953'Bell Canyon 4,992'Cherry Canyon 5,917'Delaware 6,500'Bone Spring 8,111'Wolfcamp 10,651'Wolfcamp 10,955'Permian (undifferentiated)
42-389-37667 TUMBLER STATE C · COG OPERATING LLC
0.2 mi
Delaware 2,500'Castile 2,800'Delaware 4,979'Bell Canyon 5,018'Cherry Canyon 5,943'Delaware 6,500'Bone Spring 8,137'Wolfcamp 10,664'Permian (undifferentiated) Pennsylvanian
42-389-37192 TUMBLER STATE A · COG OPERATING LLC
0.2 mi
Delaware 2,500'Castile 2,800'Delaware 4,948'Bell Canyon 4,987'Ellenburger Wolfcamp Pennsylvanian Devonian Fusselman Mississippian
42-389-37193 TUMBLER STATE B · COG OPERATING LLC
0.2 mi
Delaware 2,500'Castile 2,800'Delaware 4,948'Bell Canyon 4,987'Cherry Canyon 5,912'Delaware 6,500'Bone Spring 8,106'Wolfcamp 10,950'Permian (undifferentiated) Pennsylvanian
42-389-37217 LOCK MASTER STATE A · COG OPERATING LLC
0.3 mi
Delaware 2,500'Castile 2,800'Delaware 5,013'Bell Canyon 5,013'Cherry Canyon 5,926'Delaware 6,500'Bone Spring 8,136'Bone Spring 8,978'Bone Spring 9,718'Bone Spring 10,389'
42-389-37218 LOCK MASTER STATE B · COG OPERATING LLC
0.3 mi
Delaware 2,500'Castile 2,800'Delaware 5,013'Bell Canyon 5,013'Cherry Canyon 5,939'Delaware 6,500'Bone Spring 8,135'Wolfcamp 10,664'Pennsylvanian Permian (undifferentiated)

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
11,740–18,820 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,990 ft1,660 sx
9.625"10,215 ft1,955 sx
5.5"18,924 ft3,545 sx

Permit History (1)

Applications (1)

#840559 A COG OPERATING LLC
received 2018-05-29

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2019-11-25 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 31.375991
Lon -103.399292

Well Details

Well Number
1805H
Max Depth
10,900 ft
Drill Type
Horizontal
County
REEVES
District
8
Completed
2019-08-19

Operator

Location
FORT WORTH
P-5 Status
Active (filed 2026-02-18)
Cum Oil (all leases)
14,882,303 bbl
Cum Gas (all leases)
30,585,425 mcf
Activities
OPRS/G, OPRS/O
Total Permits
208