42-371-37122
PRODUCINGWEST RANCH
PECOS County · District 8 · LONGFELLOW ENERGY LP · PINON (OVERTHRUST)
Permits
3
Max Depth
9,000 ft
First Permit
2001-10-23
Latest Activity
2001-10-23
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2002-04-29
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: LONGFELLOW ENERGY LP ≠ Permit: RIATA ENERGY, INC.
Resolved via: scheduling → LONGFELLOW ENERGY LP
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
2002-04
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 4,065 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE CRETACEOUS (Base Cretaceous (marker)) | 1,910 ft | +2,155 ft |
| DIMPLE | 2,740 ft | +1,325 ft |
| TESNUS | 4,100 ft | -35 ft |
| CABALLOS (1ST) | 5,200 ft | -1,135 ft |
| CABALLOS (2ND) | 6,470 ft | -2,405 ft |
| CABALLOS (3RD) | 7,738 ft | -3,673 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 (2)
| Interval | Type |
|---|---|
| 6,603–7,006 ft | Perforated |
| 7,738–8,176 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,285 ft | 550 sx |
| 7" | 5,264 ft | 600 sx |
| 4.5" | 8,494 ft | 225 sx |
Permit History (3)
Applications (3)
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 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
- 509
- Max Depth
- 9,000 ft
- Drill Type
- Vertical
- County
- PECOS
- District
- 8
- Operator
- LONGFELLOW ENERGY LP
- Completed
- 2002-04-29
Operator
- Name
- LONGFELLOW ENGY, LP
- Location
- DALLAS
- P-5 Status
- X (filed 2026-03-26)
- Cum Oil (all leases)
- 402,477 bbl
- Cum Gas (all leases)
- 35,171,464 mcf
- Activities
- GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 36