42-135-35346
PRODUCINGTXL NORTH UNIT
ECTOR County · District 8 · FORMENTERA OPERATIONS LLC · TXL (TUBB)
Permits
1
Max Depth
6,920 ft
First Permit
1986-09-25
Latest Activity
1986-09-25
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2008-06-10
Shut-In
—
Plugged
—
P-5 Org Status: X
EWA / Permit operator mismatch
Scheduling: FORMENTERA OPERATIONS LLC ≠ Permit: SHELL WESTERN E&P INC.
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
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 3,285 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RUSTLER | 1,476 ft | +1,809 ft |
| YATES | 2,760 ft | +525 ft |
| SEVEN RIVERS | 2,952 ft | +333 ft |
| QUEEN | 3,418 ft | -133 ft |
| SAN ANDRES | 4,135 ft | -850 ft |
| U. CLEARFORK 5600 | 5,483 ft | -2,198 ft |
| UPPER CLEARFORK 5600' (Clear Fork) | 5,483 ft | -2,198 ft |
| TUBB | 6,041 ft | -2,756 ft |
| L. CLEARFORK | 6,092 ft | -2,807 ft |
| LOWER CLEARFORK (Clear Fork) | 6,092 ft | -2,807 ft |
| WICHITA (Wichita-Albany) | 6,561 ft | -3,276 ft |
| BASE UNIT | 6,833 ft | -3,548 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 (7)
| Interval | Type |
|---|---|
| 5,598–6,764 ft | Perforated |
| 6,362–6,364 ft | Perforated |
| 6,369–6,371 ft | Perforated |
| 6,375–6,377 ft | Perforated |
| 6,501–6,510 ft | Perforated |
| 6,541–6,550 ft | Perforated |
| 6,555–6,557 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 14" | 40 ft | — |
| 8.625" | 1,500 ft | 750 sx |
| 5.5" | 6,880 ft | 1,500 sx |
Permit History (1)
Applications (1)
Records & Logs
3 completion filings on record · 1 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 578
- Max Depth
- 6,920 ft
- Drill Type
- Vertical
- County
- ECTOR
- District
- 8
- Operator
- FORMENTERA OPERATIONS LLC
- Completed
- 2008-06-10
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
- 73