42-135-34767
PRODUCINGTXL NORTH UNIT
ECTOR County · District 8 · FORMENTERA OPERATIONS LLC · TXL (TUBB)
Permits
1
Max Depth
6,800 ft
First Permit
1985-02-07
Latest Activity
1985-02-07
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1987-07-02
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 (8) Elevation 3,276 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RUSTLER | 1,457 ft | +1,819 ft |
| YATES | 2,738 ft | +538 ft |
| SEVEN RIVERS | 2,930 ft | +346 ft |
| QUEEN | 3,396 ft | -120 ft |
| SAN ANDRES | 4,150 ft | -874 ft |
| UPPER CLEAR FORK (5600) (Clear Fork) | 5,450 ft | -2,174 ft |
| UPPER CLEARFORK (5600) (Clear Fork) | 5,450 ft | -2,174 ft |
| TUBB | 5,965 ft | -2,689 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 (3)
| Interval | Type |
|---|---|
| 5,490–6,180 ft | Perforated |
| 6,228–6,493 ft | Perforated |
| 6,528–6,719 ft | Perforated |
Casing (6)
| Size | Set Depth | Cement |
|---|---|---|
| 14" | 40 ft | 700 sx |
| 14" | 40 ft | — |
| 8.625" | 1,495 ft | 1,900 sx |
| 8.625" | 1,503 ft | 750 sx |
| 5.5" | 6,828 ft | 875 sx |
| 5.5" | 6,828 ft | 2,775 sx |
Permit History (1)
Applications (1)
Records & Logs
3 completion filings on record.
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
- 658
- Max Depth
- 6,800 ft
- Drill Type
- Vertical
- County
- ECTOR
- District
- 8
- Operator
- FORMENTERA OPERATIONS LLC
- Completed
- 1987-07-02
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