42-135-40754
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ECTOR County · District 8 · COG OPERATING LLC · SALLIE ANN (SPRABERRY-WOLFCAMP)
Permits
2
Max Depth
13,000 ft
First Permit
2011-01-21
Latest Activity
2011-01-21
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2019-10-08
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: RELIANCE ENERGY, INC.
Resolved via: scheduling → COG OPERATING LLC
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
2010-01
Last Production
2026-07
Injection / Disposal
ECTOR County disposal market →Permitted Volume
15,000 bbl/d
Max Pressure
2,350 psi
Injection Interval
4,900–5,600 ft
Injected (12mo)
—
Monthly injected volume (bbl, from H-10 filings through 2025-10-01)
Operator History
originally filed by RELIANCE ENERGY, INC. — asset transferred
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (3) Elevation 2,974 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CLEARFORK (Clear Fork) | 7,301 ft | -4,327 ft |
| SPRABERRY | 8,112 ft | -5,138 ft |
| STRAWN | 10,201 ft | -7,227 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 ↗
Perforations (1)
| Interval | Type |
|---|---|
| 5,004–5,398 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 314 ft | 375 sx |
| 8.625" | 4,825 ft | 600 sx |
| 5.5" | 5,634 ft | 420 sx |
| 5.5" | 11,410 ft | 1,050 sx |
Permit History (2)
Applications (2)
Records & Logs
2 completion filings on record · 1 with log images at RRC.
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.
No GPS coordinates yet
Well Details
- Well Number
- 1903
- Max Depth
- 13,000 ft
- Drill Type
- Vertical
- County
- ECTOR
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 2019-10-08
Operator
- Name
- COG OPER LLC
- Location
- MIDLAND
- P-5 Status
- X (filed 2026-06-02)
- Cum Oil (all leases)
- 645,285,792 bbl
- Cum Gas (all leases)
- 305,183,488 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 4,538