42-115-32288
PRODUCINGJO-MILL UNIT
DAWSON County · District 8 · JO MILL OIL COMPANY LLC · JO-MILL (SPRABERRY)
Permits
1
Max Depth
7,600 ft
First Permit
1985-05-31
Latest Activity
1985-05-31
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1985-07-27
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: JO MILL OIL COMPANY LLC ≠ Permit: TEXACO 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
1993-01
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 (5) Elevation 2,854 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| LOWER SPRABERRY ZONE 3 (Spraberry) | 2,520 ft | +334 ft |
| SAN ANDRES | 3,200 ft | -346 ft |
| UPPER SPRABERRY (Spraberry) | 6,500 ft | -3,646 ft |
| LOWER SPRABERRY ZONE 1 (Spraberry) | 7,420 ft | -4,566 ft |
| LOWER SPRABERRY ZONE 2 (Spraberry) | 7,450 ft | -4,596 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 |
|---|---|
| 7,498–7,540 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 11.75" | 410 ft | 400 sx |
| 8.625" | 4,200 ft | 2,250 sx |
| 5.5" | 7,600 ft | 900 sx |
Permit History (1)
Applications (1)
Records & Logs
2 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.
No GPS coordinates yet
Well Details
- Well Number
- 1231
- Max Depth
- 7,600 ft
- Drill Type
- Vertical
- County
- DAWSON
- District
- 8
- Operator
- JO MILL OIL COMPANY LLC
- Completed
- 1985-07-27
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