42-135-35643
Final CompletionCOWDEN RANCH 656 (CISCO)UNIT
ECTOR County · District 8 · RUST OIL CORP. · COWDEN (CISCO)
Permits
2
Max Depth
9,000 ft
First Permit
1987-09-17
Latest Activity
2025-08-29
Lifespan
38 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1988-01-15
Shut-In
—
Plugged
—
Production Summary Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil
— bbl
Cum Gas
— mcf
First Production
1993-01
Last Production
2026-07
Injection / Disposal
ECTOR County disposal market →Permitted Volume
1,200 bbl/d
Max Pressure
3,500 psi
Injection Interval
8,835–8,837 ft
Injected (12mo)
—
Seismicity: 1 earthquake M2+ within 10 km in the last 24 months (max M2.3) · TexNet catalog
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (5) Elevation 3,001 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| GRAYBURG | 3,600 ft | -599 ft |
| SAN ANDRES | 4,042 ft | -1,041 ft |
| SAN ANDRES | 4,200 ft | -1,199 ft |
| CLEARFORK (Clear Fork) | 5,266 ft | -2,265 ft |
| GLORIETA | 5,400 ft | -2,399 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.
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 (2)
| Interval | Type |
|---|---|
| 8,814–8,840 ft | Perforated |
| 8,835–8,837 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 331 ft | 325 sx |
| 12.375" | 331 ft | 325 sx |
| 8.625" | 3,660 ft | 1,200 sx |
| 8.625" | 3,660 ft | 1,200 sx |
| 5.5" | 9,000 ft | 1,270 sx |
Permit History (2)
Applications (2)
Records & Logs
4 completion filings on record.
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.
Well Details
- Well Number
- 3
- Max Depth
- 9,000 ft
- Drill Type
- Vertical
- County
- ECTOR
- District
- 8
- Operator
- RUST OIL CORP.
- Completed
- 1988-01-15
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