Permits
4
Max Depth
2,800 ft
First Permit
1992-06-26
Latest Activity
2019-12-30
Lifespan
28 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
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 (12) Elevation 470 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| ANACHACO | 1,646 ft | -1,176 ft |
| AUSTIN CHALK | 1,667 ft | -1,197 ft |
| AUSTIN CHALK | 1,701 ft | -1,231 ft |
| EAGLEFORD (Eagle Ford) | 1,862 ft | -1,392 ft |
| BUDA | 1,894 ft | -1,424 ft |
| EAGLEFORD (Eagle Ford) | 1,909 ft | -1,439 ft |
| BUDA | 1,932 ft | -1,462 ft |
| DEL RIO | 1,960 ft | -1,490 ft |
| DEL RIO | 1,994 ft | -1,524 ft |
| GEORGETOWN | 2,038 ft | -1,568 ft |
| EDWARDS | 2,066 ft | -1,596 ft |
| EDWARDS | 2,092 ft | -1,622 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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (2)
| Interval | Type |
|---|---|
| 2,205–4,200 ft | Perforated |
| 2,380–4,510 ft | Perforated |
Casing (1)
| Size | Set Depth | Cement |
|---|---|---|
| 7.625" | 2,380 ft | 680 sx |
Permit History (4)
Applications (4)
Records & Logs
5 completion filings on record · 3 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.
Well Details
- Well Number
- 4ST
- Max Depth
- 2,800 ft
- Drill Type
- Horizontal
- County
- CALDWELL
- District
- 1
- Operator
- TEXAS PETROLEUM INVESTMENT CO.
Operator
- Location
- HOUSTON
- P-5 Status
- Active (filed 2025-10-01)
- Cum Oil (all leases)
- 24,321,929 bbl
- Cum Gas (all leases)
- 20,638,399 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 233