Permits
2
Max Depth
20,700 ft
First Permit
1979-08-03
Latest Activity
2003-09-16
Lifespan
24 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
—
Shut-In
—
Plugged
—
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 (6) Elevation 2,457 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RED BEDS | 200 ft | +2,257 ft |
| OSAGE | 18,990 ft | -16,533 ft |
| KINDERHOOK | 19,894 ft | -17,437 ft |
| WOODFORD | 19,948 ft | -17,491 ft |
| HUNTON | 20,026 ft | -17,569 ft |
| SYLVAN SHALE | 20,490 ft | -18,033 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 (4)
| Interval | Type |
|---|---|
| 20,091–20,112 ft | Perforated |
| 20,310–20,322 ft | Perforated |
| 20,330–20,342 ft | Perforated |
| 20,354–20,366 ft | Perforated |
Casing (7)
| Size | Set Depth | Cement |
|---|---|---|
| 20" | 84 ft | — |
| 13.375" | 3,551 ft | 3,100 sx |
| 13.375" | 3,569 ft | 3,100 sx |
| 9.625" | 13,657 ft | 2,200 sx |
| 9.625" | 13,657 ft | 3,200 sx |
| 5.5" | 16,794 ft | 800 sx |
| 4.5" | 20,545 ft | — |
Permit History (2)
Applications (2)
Records & Logs
2 completion filings on record.
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
- 4
- Max Depth
- 20,700 ft
- Drill Type
- Vertical
- County
- HEMPHILL
- District
- 10
- Operator
- ZEPHYR LONE STAR OPER CO.,L.L.C.
Operator
- Location
- OKLAHOMA CI, TY
- P-5 Status
- Active (filed 2026-02-02)
- Cum Oil (all leases)
- 14,260 bbl
- Cum Gas (all leases)
- 21,271,953 mcf
- Activities
- OPRS/G
- Total Permits
- 30