42-389-37218

PRODUCING Horizontal

LOCK MASTER STATE B

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

Permits

1

Max Depth

11,000 ft

First Permit

2018-06-29

Latest Activity

2018-06-29

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2019-08-21

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 2,582 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
FORD-DELAWARE (Delaware)2,500 ft+82 ft
CASTILLE (Castile)2,800 ft-218 ft
BELL CANYON 5,013 ft-2,431 ft
DELAWARE 5,013 ft-2,431 ft
CHERRY CANYON 5,939 ft-3,357 ft
DELAWARE CONSOLIDATED GAS (Delaware)6,500 ft-3,918 ft
BONE SPRINGS (Bone Spring)8,135 ft-5,553 ft
WOLFCAMP 10,664 ft-8,082 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
42-389-37217 LOCK MASTER STATE A · COG OPERATING LLC
0.0 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'
42-389-37214 TUMBLER STATE G · COG OPERATING LLC
0.3 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
42-389-37213 TUMBLER STATE F · COG OPERATING LLC
0.3 mi
Delaware 2,500'Castile 2,800'Delaware 5,031'Bell Canyon 5,031'Cherry Canyon 5,954'Delaware 6,500'Bone Spring 8,136'Wolfcamp 10,669'Pennsylvanian Permian (undifferentiated)
42-389-37203 TUMBLER STATE D · COG OPERATING LLC
0.3 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'
42-389-37212 TUMBLER STATE E · COG OPERATING LLC
0.3 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
0.5 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'Pennsylvanian Permian (undifferentiated)
42-389-37192 TUMBLER STATE A · COG OPERATING LLC
0.5 mi
Delaware 2,500'Castile 2,800'Delaware 4,948'Bell Canyon 4,987'Devonian Pennsylvanian Fusselman Mississippian Ellenburger Wolfcamp
42-389-37193 TUMBLER STATE B · COG OPERATING LLC
0.5 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

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
12,025–16,565 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,918 ft1,590 sx
9.625"10,136 ft1,570 sx
5.5"16,930 ft3,290 sx

Permit History (1)

Applications (1)

#840601 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 31.371600
Lon -103.402023

Well Details

Well Number
1706H
Max Depth
11,000 ft
Drill Type
Horizontal
County
REEVES
District
8
Completed
2019-08-21

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