42-033-31072
Final CompletionWEST JO-MILL UNIT
BORDEN County · District 8 · JO MILL OIL COMPANY LLC · JO-MILL (SPRABERRY)
Permits
2
Max Depth
7,600 ft
First Permit
1984-08-30
Latest Activity
1999-05-28
Lifespan
15 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1988-06-21
Shut-In
—
Plugged
1993-12-18
EWA / Permit operator mismatch
Scheduling: JO MILL OIL COMPANY LLC ≠ Permit: PHILLIPS PETROLEUM COMPANY
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
1993-01
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 (7) Elevation 2,724 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SANTA ROSA | 770 ft | +1,954 ft |
| RUSTLER | 1,452 ft | +1,272 ft |
| YATES | 1,964 ft | +760 ft |
| SAN ANDRES | 3,236 ft | -512 ft |
| CLEAR FORK | 4,960 ft | -2,236 ft |
| UPPER SPRABERRY (Spraberry) | 6,428 ft | -3,704 ft |
| LOWER SPRABERRY (Spraberry) | 6,950 ft | -4,226 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 (2)
| Interval | Type |
|---|---|
| 890–1,110 ft | Perforated |
| 7,413–7,436 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 500 ft | 500 sx |
| 13.375" | 500 ft | 500 sx |
| 8.625" | 4,600 ft | 1,700 sx |
| 5.5" | 7,500 ft | 450 sx |
Permit History (2)
Applications (2)
Records & Logs
5 completion filings on record · 1 with log images at RRC.
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
- 305WS
- Max Depth
- 7,600 ft
- Drill Type
- Vertical
- County
- BORDEN
- District
- 8
- Operator
- JO MILL OIL COMPANY LLC
- Completed
- 1988-06-21
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