42-165-32981
Final CompletionWASSON SOUTH CLEARFORK UNIT
GAINES County · District 8 · OCCIDENTAL PERMIAN LTD. · WASSON 72
Permits
1
Max Depth
7,800 ft
First Permit
1984-09-28
Latest Activity
1984-09-28
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1990-07-17
Shut-In
—
Plugged
2004-04-13
EWA / Permit operator mismatch
Scheduling: OCCIDENTAL PERMIAN LTD. ≠ Permit: SHELL WESTERN E&P INC.
Resolved via: production → OCCIDENTAL PERMIAN LTD.
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 (15) Elevation 3,547 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| RUSTLER | 2,112 ft | +1,435 ft |
| SALADO | 2,139 ft | +1,408 ft |
| TANSIL | 2,862 ft | +685 ft |
| YATES | 2,943 ft | +604 ft |
| SEVEN RIVERS | 3,109 ft | +438 ft |
| QUEEN | 3,446 ft | +101 ft |
| GRAYBURG | 4,154 ft | -607 ft |
| SAN ANDRES | 4,439 ft | -892 ft |
| GLORIETA | 5,912 ft | -2,365 ft |
| U. CLEARFORK | 6,185 ft | -2,638 ft |
| UPPER CLEARFORK (Clear Fork) | 6,185 ft | -2,638 ft |
| TUBB | 7,292 ft | -3,745 ft |
| L. CLEARFORK | 7,372 ft | -3,825 ft |
| LOWER CLEARFORK (Clear Fork) | 7,372 ft | -3,825 ft |
| WICHITA (Wichita-Albany) | 7,866 ft | -4,319 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 |
|---|---|
| 6,166–6,676 ft | Perforated |
| 6,166–7,846 ft | Perforated |
| 6,705–6,768 ft | Perforated |
| 7,374–7,846 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 404 ft | 400 sx |
| 9.625" | 3,342 ft | 2,950 sx |
| 5.5" | 7,906 ft | 3,035 sx |
Permit History (1)
Applications (1)
Records & Logs
4 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
- 8420S
- Max Depth
- 7,800 ft
- Drill Type
- Vertical
- County
- GAINES
- District
- 8
- Operator
- OCCIDENTAL PERMIAN LTD.
- Completed
- 1990-07-17
Operator
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-02-02)
- Cum Oil (all leases)
- 1,136,409,534 bbl
- Cum Gas (all leases)
- 442,977,611 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 6,211