Permits
1
Max Depth
7,100 ft
First Permit
1988-08-26
Latest Activity
1988-08-26
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1988-11-04
Shut-In
—
Plugged
—
P-5 Org Status: H
EWA / Permit operator mismatch
Scheduling: ATLAS OPERATING LLC ≠ Permit: UNION OIL COMPANY OF CALIFORNIA
Resolved via: production → ATLAS OPERATING 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 (5) Elevation 2,342 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 1,282 ft | +1,060 ft |
| SPRABERRY 1ST (Spraberry) | 4,780 ft | -2,438 ft |
| PSRABERRY 2ND | 5,300 ft | -2,958 ft |
| DEAN | 5,980 ft | -3,638 ft |
| PENN CISCO REEF (Pennsylvanian) | 6,919 ft | -4,577 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 |
|---|---|
| 6,919–6,929 ft | Perforated |
| 6,960–6,965 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 445 ft | 500 sx |
| 8.625" | 2,350 ft | 1,450 sx |
| 5.5" | 7,000 ft | 925 sx |
Permit History (1)
Applications (1)
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 can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 221
- Max Depth
- 7,100 ft
- Drill Type
- Vertical
- County
- BORDEN
- District
- 8
- Operator
- ATLAS OPERATING LLC
- Completed
- 1988-11-04
Operator
- Name
- ATLAS OPER LLC
- Location
- HOUSTON
- P-5 Status
- H (filed 2026-03-09)
- Cum Oil (all leases)
- 7,184,429 bbl
- Cum Gas (all leases)
- 10,995,911 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 78