42-413-32617
SWR-10-WELLMAYER EDWIN S. JR. N
SCHLEICHER County · District 7 · UPP OPERATING LLC · SAWYER (STRAWN NORTH)
Permits
1
Max Depth
8,800 ft
First Permit
2009-12-28
Latest Activity
2009-12-28
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2010-03-17
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: UPP OPERATING LLC ≠ Permit: HIGHMOUNT EXPL & PROD TEXAS LLC
Resolved via: scheduling → 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
2010-03
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 2,303 ft
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE CRETACEOUS (Base Cretaceous (marker)) | 1,049 ft | +1,254 ft |
| WOLFCAMP | 4,643 ft | -2,340 ft |
| CANYON | 6,937 ft | -4,634 ft |
| STRAWN | 8,160 ft | -5,857 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 |
|---|---|
| 7,410–7,450 ft | Perforated |
| 8,164–8,354 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,028 ft | 385 sx |
| 4.5" | 8,558 ft | 500 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 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
- 18
- Max Depth
- 8,800 ft
- Drill Type
- Vertical
- County
- SCHLEICHER
- District
- 7
- Operator
- UPP OPERATING LLC
- Completed
- 2010-03-17
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