42-135-35987

COWDEN RANCH 656 (CISCO)UNIT

ECTOR County · District 8 · RUST OIL CORP. · COWDEN (CISCO)

Permits

2

Max Depth

9,600 ft

First Permit

1988-09-26

Latest Activity

2024-05-30

Lifespan

36 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2024-06-15

Shut-In

Plugged

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

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 (15) Elevation 3,006 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA BASE (Santa Rosa)1,300 ft+1,706 ft
YATES 2,700 ft+306 ft
YATES 2,800 ft+206 ft
SEVEN RIVERS 2,900 ft+106 ft
QUEEN 3,100 ft-94 ft
GRAYBURG 3,600 ft-594 ft
GRAYBURG 3,800 ft-794 ft
SAN ANDRES 4,065 ft-1,059 ft
SAN ANDRES 4,228 ft-1,222 ft
SAN ANDRES 4,300 ft-1,294 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)4,800 ft-1,794 ft
HOLT 5,200 ft-2,194 ft
GLORIETA 5,400 ft-2,394 ft
CLEARFORK (Clear Fork)5,750 ft-2,744 ft
WOLFCAMP 8,128 ft-5,122 ft

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
42-135-35643 COWDEN RANCH '6A' · RUST OIL CORP.
0.3 mi
Grayburg 3,600'San Andres 4,042'San Andres 4,200'Clear Fork 5,266'Glorieta 5,400'
42-135-43609 COWDEN · ZARVONA ENERGY LLC
0.5 mi
Grayburg 3,360'Glorieta 5,273'Tubb 5,673'Seven Rivers Queen Holt Santa Rosa Clear Fork Yates San Andres
42-135-43674 COWDEN · ZARVONA ENERGY LLC
0.7 mi
Queen 3,680'Grayburg 3,980'San Andres 4,320'Glorieta 5,260'Tubb 5,680'Santa Rosa Clear Fork Seven Rivers Yates Holt
42-135-43552 COWDEN · NOVO OIL & GAS TEXAS, LLC
0.7 mi
Yates 3,787'Seven Rivers 4,786'Queen 4,996'Grayburg 5,284'San Andres 5,669'Glorieta 6,205'Clear Fork 6,405'Santa Rosa Tubb Holt
42-135-35032 COWDEN RANCH '7A' · RUST OIL CORP.
1.2 mi
Grayburg 3,600'San Andres 4,228'San Andres 4,228'Glorieta 5,400'Wolfcamp 8,054'Wolfcamp 8,054'
42-135-43810 SWEET MELISSA · ARES ENERGY, LTD.
1.5 mi
Yates 2,843'Seven Rivers 3,225'Queen 3,442'Grayburg 3,777'San Andres 3,976'Glorieta 5,361'Clear Fork 5,554'Tubb Holt Santa Rosa
42-135-44016 KATY UNIT · ARES ENERGY, LTD.
1.9 mi
Yates 2,830'Queen 3,430'Grayburg 3,980'San Andres 4,283'Glorieta 5,348'Clear Fork 5,763'Santa Rosa Holt Tubb Seven Rivers
42-135-43511 COWDEN 9 · RAPTOR PETROLEUM DEVELOP, LLC
2.4 mi
Santa Rosa 1,382'Yates 2,842'Seven Rivers 3,065'Queen 3,750'Grayburg 4,028'

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 (3)

IntervalType
8,139–8,150 ftPerforated
8,895–8,898 ftPerforated
8,895–8,898 ftOpen hole

Casing (3)

SizeSet DepthCement
13.375"315 ft325 sx
8.625"3,670 ft1,200 sx
5.5"9,599 ft700 sx

Permit History (2)

Applications (2)

#898098 A RUST OIL CORP.
received 2024-03-12
#351518 A RUST OIL CORP.
received 1988-09-23

Records & Logs

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

W-2/G-1 2026-03-13
W-2/G-1 2025-07-30
W-2/G-1 1988-12-08 log on file
W-2/G-1 1988-12-08 log on file
W-2/G-1 1989-01-02
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 31.871837
Lon -102.529275

Well Details

Well Number
5
Max Depth
9,600 ft
Drill Type
Vertical
County
ECTOR
District
8
Completed
2024-06-15

Operator

Location
FORT WORTH
P-5 Status
X (filed 2025-11-17)
Cum Oil (all leases)
3,567,571 bbl
Cum Gas (all leases)
2,242,073 mcf
Activities
OPRS/G, OPRS/O
Total Permits
317