← Wells

42-389-37192

PRODUCING Horizontal

TUMBLER STATE A

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

Permits

1

Max Depth

10,700 ft

First Permit

2018-05-29

Latest Activity

2018-05-29

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: production → U.S. ENERGY DEVELOPMENT CORP

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2019-08

Last Production

2026-07

Operator History

Chain of Custody

COG OPERATING LLC 2019-2025→ U.S. ENERGY DEVELOPMENT CORP 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 (10) Elevation 2,593 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
FORD-DELAWARE (Delaware)2,500 ft+93 ft
CASTILLE (Castile)2,800 ft-207 ft
DELAWARE 4,948 ft-2,355 ft
BELL CANYON 4,987 ft-2,394 ft
DEVONIAN ——
ELLENBURGER ——
FUSSELMAN ——
MISSISSIPPIAN ——
PENNSYLVANIAN ——
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
✓ 42-389-37193 TUMBLER STATE B · COG OPERATING LLC
0.0 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 —
✓ 42-389-37667 TUMBLER STATE C · COG OPERATING LLC
0.0 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 —
✓ 42-389-37212 TUMBLER STATE E · COG OPERATING LLC
0.2 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) —
✓ 42-389-37203 TUMBLER STATE D · COG OPERATING LLC
0.2 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'
✓ 42-389-37213 TUMBLER STATE F · COG OPERATING LLC
0.2 mi
Delaware 2,500'Castile 2,800'Bell Canyon 5,031'Delaware 5,031'Cherry Canyon 5,954'Delaware 6,500'Bone Spring 8,136'Wolfcamp 10,669'Permian (undifferentiated) —Pennsylvanian —
✓ 42-389-37214 TUMBLER STATE G · COG OPERATING LLC
0.2 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 —
✓ 42-389-37188 RENEGADE STATE B · COG OPERATING LLC
0.3 mi
Delaware 2,500'Castile 2,800'Delaware 4,963'Bell Canyon 5,002'Cherry Canyon 5,927'Delaware 6,500'Bone Spring 8,121'Wolfcamp 10,965'Pennsylvanian —Permian (undifferentiated) —
✓ 42-389-37187 RENEGADE STATE A · COG OPERATING LLC
0.3 mi
Delaware 2,500'Castile 2,800'Delaware 4,963'Bell Canyon 5,002'Cherry Canyon 5,927'Delaware 6,500'Bone Spring 8,121'Bone Spring 8,952'Bone Spring 9,605'Bone Spring 10,551'

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
11,452–18,501 ftPerforated

Casing (4)

SizeSet DepthCement
13.375"1,929 ft1,450 sx
9.625"8,470 ft2,025 sx
7.625"10,487 ft365 sx
5.5"18,585 ft1,290 sx

Permit History (1)

#840442 Drill Final Completion

TUMBLER STATE A · 10,700 ft

2018-05-29

Spud 2018-09-29

Applications (1)

#840442 A COG OPERATING LLC
received 2018-05-23

Records & Logs

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

W-2/G-1 2019-11-07 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.

Google Maps → Explorer Map →
Lat 31.375198
Lon -103.395396

Well Details

Well Number
1853H
Max Depth
10,700 ft
Drill Type
Horizontal
County
REEVES
District
8
Operator
U.S. ENERGY DEVELOPMENT CORP
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