42-435-39357
SWR-10-WELLMAYER RANCH 40
SUTTON County · District 1 · UPP OPERATING LLC · SAWYER (STRAWN NORTH)
Permits
1
Max Depth
8,800 ft
First Permit
2011-07-21
Latest Activity
2011-07-21
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2011-09-24
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: UPP OPERATING LLC ≠ Permit: HIGHMOUNT EXPL & PROD TEXAS LLC
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
2011-09
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 2,260 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE CRETACEOUS (Base Cretaceous (marker)) | 1,100 ft | +1,160 ft |
| WOLFCAMP | 4,190 ft | -1,930 ft |
| CANYON | 6,890 ft | -4,630 ft |
| STRAWN | 7,970 ft | -5,710 ft |
| STRAWN | 7,980 ft | -5,720 ft |
| ELLENBURGER | 8,230 ft | -5,970 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 |
|---|---|
| 7,380–7,418 ft | Perforated |
| 7,974–7,984 ft | Perforated |
| 8,322–8,482 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,132 ft | 350 sx |
| 4.5" | 8,591 ft | 540 sx |
Permit History (1)
Applications (1)
Records & Logs
1 completion filing 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
- 13
- Max Depth
- 8,800 ft
- Drill Type
- Vertical
- County
- SUTTON
- District
- 1
- Operator
- UPP OPERATING LLC
- Completed
- 2011-09-24
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