42-211-31718
PRODUCINGGULF-MESA SAPPINGTON
HEMPHILL County · District 10 · MOUNTAINSIDE ENERGY OPERATING L · HEMPHILL (GRANITE WASH.)
Permits
1
Max Depth
11,600 ft
First Permit
1984-09-06
Latest Activity
1984-09-06
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1984-12-01
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: MOUNTAINSIDE ENERGY OPERATING L ≠ Permit: GULF OIL CORP.
Resolved via: production → MOUNTAINSIDE ENERGY OPERATING, L
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 2,700 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BROWN DOLOMITE | 4,324 ft | -1,624 ft |
| DOUGLAS SAND (Douglas) | 7,622 ft | -4,922 ft |
| TONKAWA SAND (Tonkawa) | 8,386 ft | -5,686 ft |
| CLEVELAND SAND (Cleveland) | 8,819 ft | -6,119 ft |
| OSWEGO | 9,904 ft | -7,204 ft |
| GRANITE WASH | 10,640 ft | -7,940 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 |
|---|---|
| 10,748–10,818 ft | Perforated |
| 10,914–10,976 ft | Perforated |
| 10,990–11,000 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 3,004 ft | 1,650 sx |
| 5.5" | 11,381 ft | 360 sx |
Permit History (1)
Applications (1)
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
- 11,600 ft
- Drill Type
- Vertical
- County
- HEMPHILL
- District
- 10
- Operator
- MOUNTAINSIDE ENERGY OPERATING L
- Completed
- 1984-12-01
Operator
- Location
- DALLAS
- P-5 Status
- Active (filed 2026-01-21)
- Cum Oil (all leases)
- 10,139 bbl
- Cum Gas (all leases)
- 197,306 mcf
- Activities
- OPRS/G, OPRS/O