42-283-37310
PRODUCING HorizontalCRX YBAR A
LA SALLE County · District 1 · CASTLEROCK EF OPERATING LLC · EAGLEVILLE (EAGLE FORD-1)
Permits
2
Max Depth
14,000 ft
First Permit
2022-08-22
Latest Activity
2022-08-22
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2023-03-14
Shut-In
—
Plugged
—
P-5 Org Status: X
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
2022-10
Last Production
2026-07
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (12) Elevation 374 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| ANACACHO | 8,507 ft | -8,133 ft |
| AUSTIN CHALK | 9,086 ft | -8,712 ft |
| AUSTIN CHALK | 9,091 ft | -8,717 ft |
| EAGLE FORD - H2S (Eagle Ford) | 9,211 ft | -8,837 ft |
| EAGLE FORD - H2S (Eagle Ford) | 9,214 ft | -8,840 ft |
| BUDA - H2S (Buda) | — | — |
| ESCONDIDO | — | — |
| OLMOS - DISPOSAL (Olmos) | — | — |
| QUEEN CITY | — | — |
| SPARTA | — | — |
| WILCOX - DISPOSAL (Wilcox) | — | — |
| YEGUA | — | — |
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 (1)
| Interval | Type |
|---|---|
| 9,515–22,750 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 3,865 ft | 989 sx |
| 5.5" | 22,829 ft | 3,921 sx |
Permit History (2)
Applications (2)
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.
Well Details
- Well Number
- 4H
- Max Depth
- 14,000 ft
- Drill Type
- Horizontal
- County
- LA SALLE
- District
- 1
- Operator
- CASTLEROCK EF OPERATING LLC
- Completed
- 2023-03-14
Operator
- Location
- SAN ANTONIO
- P-5 Status
- X (filed 2026-01-28)
- Cum Oil (all leases)
- 3,530,048 bbl
- Cum Gas (all leases)
- — mcf
- Activities
- OPRS/O
- Total Permits
- 34