42-013-32940
PRODUCINGDIAMOND HEAD -A-
ATASCOSA County · District 1 · CALK ROGER D. · C.J.P. (REEF)
Permits
1
Max Depth
2,500 ft
First Permit
1984-09-19
Latest Activity
1984-09-19
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1984-10-12
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: CALK ROGER D. ≠ Permit: CHASE-MANN PETROLEUM INCORP.
Resolved via: production → CALK, ROGER D.
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 (2) Elevation 654 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| ANNACACHO | 2,200 ft | -1,546 ft |
| DALE LIME | 2,362 ft | -1,708 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 |
|---|---|
| 2,362–2,370 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 127 ft | 85 sx |
| 4.5" | 2,373 ft | 425 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 can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 4
- Max Depth
- 2,500 ft
- Drill Type
- Vertical
- County
- ATASCOSA
- District
- 1
- Operator
- CALK ROGER D.
- Completed
- 1984-10-12
Operator
- Name
- CALK, ROGER D.
- Location
- LYTLE
- P-5 Status
- X (filed 2026-06-03)
- Cum Oil (all leases)
- 223,365 bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/O