Permits
1
Max Depth
2,500 ft
First Permit
1997-10-03
Latest Activity
1997-10-03
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1998-07-17
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: CALK OIL COMPANY ≠ Permit: PROPERTY DEVELOPMENT GROUP, INC.
Resolved via: production → CALK OIL COMPANY
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 (4) Elevation 644 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| T/WILCOX | 720 ft | -76 ft |
| BASE LIT | 1,598 ft | -954 ft |
| T/ANACHO | 2,110 ft | -1,466 ft |
| T/AUSTIN CHALK | 2,278 ft | -1,634 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 |
|---|---|
| 1,722–1,734 ft | Perforated |
Casing (1)
| Size | Set Depth | Cement |
|---|---|---|
| 4.5" | 2,393 ft | 147 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
- 10
- Max Depth
- 2,500 ft
- Drill Type
- Vertical
- County
- ATASCOSA
- District
- 1
- Operator
- CALK OIL COMPANY
- Completed
- 1998-07-17
Operator
- Name
- CALK OIL CO
- Location
- LYTLE
- P-5 Status
- Active (filed 2026-06-03)
- Cum Oil (all leases)
- 89,606 bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/O
- Total Permits
- 2