42-435-36128
Final CompletionMAYFIELD 46
SUTTON County · District 7 · ENERVEST OPERATING L.L.C. · SAWYER (STRAWN NORTH)
Permits
3
Max Depth
8,550 ft
First Permit
2002-12-20
Latest Activity
2013-09-18
Lifespan
11 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
2003-02-08
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: ENERVEST OPERATING L.L.C. ≠ Production: UPP OPERATING, LLC (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: ENERVEST OPERATING L.L.C. ≠ 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
2003-02
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 2,310 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE CRETACEOUS (Base Cretaceous (marker)) | 848 ft | +1,462 ft |
| LEONARD | 1,681 ft | +629 ft |
| WOLFCAMP | 3,417 ft | -1,107 ft |
| WOLFCAMP | 3,515 ft | -1,205 ft |
| CANYON | 6,202 ft | -3,892 ft |
| STRAWN | 7,737 ft | -5,427 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 |
|---|---|
| 3,790–4,951 ft | Perforated |
| 6,234–7,178 ft | Perforated |
| 7,967–8,198 ft | Perforated |
Casing (5)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 275 ft | 250 sx |
| 13.375" | 275 ft | 250 sx |
| 8.625" | 2,386 ft | 735 sx |
| 8.625" | 2,386 ft | 735 sx |
| 4.5" | 8,468 ft | 750 sx |
Permit History (3)
Applications (3)
Records & Logs
4 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
- 18
- Max Depth
- 8,550 ft
- Drill Type
- Vertical
- County
- SUTTON
- District
- 7
- Operator
- ENERVEST OPERATING L.L.C.
- Completed
- 2003-02-08
Operator
- Name
- ENERVEST OPER, L.L.C
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-01-13)
- Cum Oil (all leases)
- 39,678,049 bbl
- Cum Gas (all leases)
- 1,492,558,001 mcf
- Activities
- CSGD/G, G/PUR, GTHS/G, OPRS/G
- Total Permits
- 1,249