42-435-35009
SWR-10-WELLMAYER 19
SUTTON County · District 7 · UPP OPERATING LLC · SAWYER (STRAWN NORTH)
Permits
1
Max Depth
8,700 ft
First Permit
1999-10-12
Latest Activity
1999-10-12
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1999-12-31
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: UPP OPERATING LLC ≠ Permit: DREYFUS, LOUIS NATURAL GAS CORP
Resolved via: production → UPP 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
1999-12
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 (4) Elevation 2,263 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE CRETACEOUS (Base Cretaceous (marker)) | 851 ft | +1,412 ft |
| WOLFCAMP | 3,530 ft | -1,267 ft |
| CANYON | 6,443 ft | -4,180 ft |
| STRAWN | 8,268 ft | -6,005 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 |
|---|---|
| 6,780–6,810 ft | Perforated |
| 7,242–7,480 ft | Perforated |
| 8,290–8,320 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,110 ft | 314 sx |
| 4.5" | 8,580 ft | 1,000 sx |
Permit History (1)
Applications (1)
Records & Logs
3 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
- 8,700 ft
- Drill Type
- Vertical
- County
- SUTTON
- District
- 7
- Operator
- UPP OPERATING LLC
- Completed
- 1999-12-31
Operator
- Name
- UPP OPER, LLC
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-03-06)
- Cum Oil (all leases)
- 293,241 bbl
- Cum Gas (all leases)
- 486,804,996 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/G, OPRS/G, OPRS/O
- Total Permits
- 33