42-217-30383
PRODUCING HorizontalMASTIN CENTRAL UNIT
HILL County · District 9 · FORMENTERA OPERATIONS LLC · NEWARK EAST (BARNETT SHALE)
Permits
1
Max Depth
8,900 ft
First Permit
2005-11-21
Latest Activity
2005-11-21
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2006-07-27
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: FORMENTERA OPERATIONS LLC ≠ Permit: CHIEF OIL & GAS LLC **
Resolved via: production → FORMENTERA OPERATIONS LLC
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
2006-07
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 (6) Elevation 728 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BIG SALINE | 7,468 ft | -6,740 ft |
| LOWER MARBLE FALLS (Marble Falls) | 7,924 ft | -7,196 ft |
| MARBLE FALLS | 7,936 ft | -7,208 ft |
| UPPER BARNETT SHALE (Barnett) | 8,112 ft | -7,384 ft |
| BARNETT SHALE (Barnett) | 8,127 ft | -7,399 ft |
| ORDOVICIAN | 8,349 ft | -7,621 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 (5)
| Interval | Type |
|---|---|
| 8,495–8,545 ft | Perforated |
| 8,990–9,040 ft | Perforated |
| 9,485–9,535 ft | Perforated |
| 9,980–10,030 ft | Perforated |
| 10,475–10,525 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,811 ft | 670 sx |
| 7" | 7,072 ft | — |
| 5.5" | 7,074 ft | 680 sx |
| 5.5" | 10,620 ft | 680 sx |
Permit History (1)
Applications (1)
Records & Logs
4 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
- 1H
- Max Depth
- 8,900 ft
- Drill Type
- Horizontal
- County
- HILL
- District
- 9
- Operator
- FORMENTERA OPERATIONS LLC
- Completed
- 2006-07-27
Operator
- Location
- AUSTIN
- P-5 Status
- X (filed 2026-06-11)
- Cum Oil (all leases)
- 7,170,117 bbl
- Cum Gas (all leases)
- 53,235,974 mcf
- Activities
- CSGD/P, G/PUR, OPRS/G, OPRS/O
- Total Permits
- 74