42-115-33135
PRODUCINGWEST SPRABERRY UNIT
DAWSON County · District 8 · JO MILL OIL COMPANY LLC · SPRABERRY W. (DEEP SPRABERRY)
Permits
1
Max Depth
9,000 ft
First Permit
2005-04-14
Latest Activity
2005-04-14
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2005-05-31
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: JO MILL OIL COMPANY LLC ≠ Permit: CHEVRON U. S. A. INC.
Resolved via: production → JO MILL OIL COMPANY 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
1993-12
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 (5) Elevation 2,916 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RUSTLER | 1,630 ft | +1,286 ft |
| YATES | 2,265 ft | +651 ft |
| SAN ANDRES | 3,560 ft | -644 ft |
| CLEARFORK (Clear Fork) | 6,545 ft | -3,629 ft |
| UPPER SPRABERRY (Spraberry) | 6,685 ft | -3,769 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 |
|---|---|
| 7,570–7,606 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 11.75" | 344 ft | 300 sx |
| 8.625" | 4,665 ft | 1,400 sx |
| 5.5" | 7,897 ft | 900 sx |
Permit History (1)
Applications (1)
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
- 603
- Max Depth
- 9,000 ft
- Drill Type
- Vertical
- County
- DAWSON
- District
- 8
- Operator
- JO MILL OIL COMPANY LLC
- Completed
- 2005-05-31
Operator
- Location
- FORT WORTH
- P-5 Status
- Active (filed 2025-07-09)
- Cum Oil (all leases)
- 4,349,903 bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/O