42-329-10367
Final CompletionHALEY C.B. -A-
MIDLAND County · District 8 · COG OPERATING LLC · PARKS (SPRABERRY)
Permits
3
Max Depth
11,030 ft
First Permit
1983-11-22
Latest Activity
1995-07-21
Lifespan
12 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1995-09-22
Shut-In
—
Plugged
—
EWA / Permit operator mismatch
Scheduling: COG OPERATING LLC ≠ Permit: MOBIL PRODUCING TX. & N.M. 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
1993-01
Last Production
2026-07
Operator History
Chain of Custody
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (10) Elevation 2,787 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SPRABERRY | 7,806 ft | -5,019 ft |
| DEAN | 9,080 ft | -6,293 ft |
| STRAWN | 10,108 ft | -7,321 ft |
| STRAWN | 10,194 ft | -7,407 ft |
| BEND | 10,410 ft | -7,623 ft |
| PENNSYLVANIAN | 10,474 ft | -7,687 ft |
| PENNSYLVANIAN | 10,747 ft | -7,960 ft |
| ATOKA | 10,848 ft | -8,061 ft |
| LOWER ATOKA (Atoka) | 10,848 ft | -8,061 ft |
| DEVONIAN | 11,754 ft | -8,967 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 (4)
| Interval | Type |
|---|---|
| 7,808–7,999 ft | Perforated |
| 10,194–10,204 ft | Perforated |
| 10,848–10,896 ft | Perforated |
| ?–11,907 ft | Perforated |
Casing (8)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 438 ft | 450 sx |
| 13.375" | 438 ft | — |
| 9.625" | 5,700 ft | 460 sx |
| 9.625" | 5,700 ft | — |
| 2.375" | 11,647 ft | — |
| 7.625" | 11,975 ft | 775 sx |
| 7" | 11,975 ft | 725 sx |
| 7" | 11,975 ft | — |
Permit History (3)
Applications (3)
Records & Logs
11 completion filings on record · 4 with log images at RRC.
+5 more filings
Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 4
- Max Depth
- 11,030 ft
- Drill Type
- Vertical
- County
- MIDLAND
- District
- 8
- Operator
- COG OPERATING LLC
- Completed
- 1995-09-22
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
- 4,550