42-033-31161
INJECTIONJO-MILL UNIT
BORDEN County · District 8 · JO MILL OIL COMPANY LLC · JO-MILL (SPRABERRY)
Permits
1
Max Depth
7,500 ft
First Permit
1985-05-31
Latest Activity
1985-05-31
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2021-10-28
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
Injection / Disposal
Permitted Volume
2,000 bbl/d
Max Pressure
2,500 psi
Injection Interval
7,325–7,410 ft
Injected (12mo)
80,198 bbl
Monthly injected volume (bbl, from H-10 filings through 2025-08-01)
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 (8) Elevation 2,677 ft (DF)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SAN ANDRES | 3,260 ft | -583 ft |
| SAN ANDRES | 3,745 ft | -1,068 ft |
| UPPER SPRABERRY (Spraberry) | 6,400 ft | -3,723 ft |
| UPPER SPRABERRY (Spraberry) | 6,425 ft | -3,748 ft |
| LOWER SPRABERRY ZONE 1 (Spraberry) | 7,250 ft | -4,573 ft |
| LOWER SPBRY ZONE 2 | 7,290 ft | -4,613 ft |
| LOWER SPBRY ZONE 3 | 7,360 ft | -4,683 ft |
| SPRABERRY | 7,366 ft | -4,689 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 |
|---|---|
| 7,366–7,410 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 11.75" | 410 ft | 400 sx |
| 8.625" | 4,180 ft | 2,250 sx |
| 5.5" | 7,425 ft | 900 sx |
Permit History (1)
Applications (1)
Records & Logs
4 completion filings on record.
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
- 4321
- Max Depth
- 7,500 ft
- Drill Type
- Vertical
- County
- BORDEN
- District
- 8
- Operator
- JO MILL OIL COMPANY LLC
- Completed
- 2021-10-28
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