42-435-36660
PRODUCING HorizontalMAYFIELD 41
SUTTON County · District 7 · UPP OPERATING LLC · SAWYER (STRAWN NORTH)
Permits
1
Max Depth
8,630 ft
First Permit
2004-01-23
Latest Activity
2004-01-23
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2004-09-03
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: UPP OPERATING LLC ≠ Permit: DOMINION OKLAHOMA TEXAS E&P, INC
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
2004-09
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 (4) Elevation 2,226 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE CRETACEOUS (Base Cretaceous (marker)) | 830 ft | +1,396 ft |
| WOLFCAMP | 3,413 ft | -1,187 ft |
| CANYON | 7,410 ft | -5,184 ft |
| STRAWN | 7,974 ft | -5,748 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 (1)
| Interval | Type |
|---|---|
| 8,768–11,697 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 280 ft | 280 sx |
| 9.625" | 2,428 ft | 640 sx |
| 7" | 8,832 ft | 550 sx |
| 4.5" | 11,968 ft | 335 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
- 8H
- Max Depth
- 8,630 ft
- Drill Type
- Horizontal
- County
- SUTTON
- District
- 7
- Operator
- UPP OPERATING LLC
- Completed
- 2004-09-03
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