42-137-30904
PRODUCINGMAYFIELD RANCH B
EDWARDS County · District 7 · UPP OPERATING LLC · M. M. W. (CANYON)
Permits
1
Max Depth
3,600 ft
First Permit
1985-03-11
Latest Activity
1985-03-11
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
1985-03-19
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: UPP OPERATING LLC ≠ Permit: STATEX PETROLEUM 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
1993-01
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 (3) Elevation 2,285 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| BASE CRETACEOUS (Base Cretaceous (marker)) | 1,108 ft | +1,177 ft |
| CISCO | 2,757 ft | -472 ft |
| CANYON SD (Canyon) | 3,290 ft | -1,005 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 (1)
| Interval | Type |
|---|---|
| 3,292–3,334 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,319 ft | 440 sx |
| 4.5" | 3,588 ft | 500 sx |
Permit History (1)
Applications (1)
Records & Logs
2 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
- 87
- Max Depth
- 3,600 ft
- Drill Type
- Vertical
- County
- EDWARDS
- District
- 7
- Operator
- UPP OPERATING LLC
- Completed
- 1985-03-19
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