42-507-33514
PRODUCING HorizontalPFEIFFER-BYRD
ZAVALA County · District 1 · CML EXPLORATION LLC · PEARSALL (AUSTIN CHALK)
Permits
2
Max Depth
6,600 ft
First Permit
2023-10-17
Latest Activity
2023-10-17
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2023-12-13
Shut-In
—
Plugged
—
P-5 Org Status: Active
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
2023-12
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 (3) Elevation 630 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| ESCONDIDO - DISPOSAL (Escondido) | 2,923 ft | -2,293 ft |
| OLMOS | 3,960 ft | -3,330 ft |
| AUSTIN CHALK | 5,801 ft | -5,171 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 (6)
| Interval | Type |
|---|---|
| 5,814–12,755 ft | Open hole |
| 5,814–14,513 ft | Open hole |
| 5,814–14,758 ft | Open hole |
| 5,814–15,150 ft | Open hole |
| 5,814–15,524 ft | Open hole |
| 5,814–15,849 ft | Open hole |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 2,670 ft | 805 sx |
| 7" | 5,450 ft | 585 sx |
Permit History (2)
Applications (2)
Records & Logs
1 completion filing 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
- 1
- Max Depth
- 6,600 ft
- Drill Type
- Horizontal
- County
- ZAVALA
- District
- 1
- Operator
- CML EXPLORATION LLC
- Completed
- 2023-12-13
Operator
- Name
- CML EXPL, LLC
- Location
- AUSTIN
- P-5 Status
- Active (filed 2025-10-20)
- Cum Oil (all leases)
- 30,706,191 bbl
- Cum Gas (all leases)
- 23,197,210 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 511