Permits
1
Max Depth
1,540 ft
First Permit
1985-01-18
Latest Activity
1985-01-18
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1985-12-27
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: OLD CHIEF OIL LLC ≠ Permit: GRINDL, ANTHONY R.
Resolved via: production → OLD CHIEF OIL, 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 (3) Elevation 645 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| ESCONDIDO | 1,220 ft | -575 ft |
| LIT | 1,425 ft | -780 ft |
| OLMOS | 1,460 ft | -815 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 |
|---|---|
| 1,475–1,495 ft | Perforated |
Casing (1)
| Size | Set Depth | Cement |
|---|---|---|
| 4.5" | 1,547 ft | 191 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 can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 5
- Max Depth
- 1,540 ft
- Drill Type
- Vertical
- County
- ATASCOSA
- District
- 1
- Operator
- OLD CHIEF OIL LLC
- Completed
- 1985-12-27
Operator
- Name
- OLD CHIEF OIL, LLC
- Location
- SAN ANTONIO
- P-5 Status
- Active (filed 2026-06-03)
- Cum Oil (all leases)
- 5,352 bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/O