42-355-32607
YELLIFF J.S. ET AL
NUECES County · District 4 · UNION PACIFIC RESOURCES COMPANY · STRATTON (G-21 RES.4)
Permits
4
Max Depth
8,300 ft
First Permit
1987-11-20
Latest Activity
1989-04-20
Lifespan
1 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1988-04-28
Shut-In
—
Plugged
—
EWA / Production operator mismatch
Scheduling: UNION PACIFIC RESOURCES COMPANY ≠ Production: URBAN OIL & GAS GROUP, LLC (reported 2026-04)
Resolved via: production → URBAN OIL & GAS GROUP, 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 (4) Elevation 108 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| E-25 | 6,086 ft | -5,978 ft |
| WARDNER | 6,416 ft | -6,308 ft |
| G-21 | 7,200 ft | -7,092 ft |
| G-21 | 7,202 ft | -7,094 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 (7)
| Interval | Type |
|---|---|
| 5,470–5,476 ft | Perforated |
| 5,502–5,512 ft | Perforated |
| 5,534–5,540 ft | Perforated |
| 5,544–5,552 ft | Perforated |
| 5,556–5,562 ft | Perforated |
| 6,086–6,098 ft | Perforated |
| 7,224–7,240 ft | Perforated |
Casing (4)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 1,245 ft | 445 sx |
| 2.875" | 8,236 ft | 875 sx |
| 2.875" | 8,236 ft | 875 sx |
| 2.875" | 8,248 ft | 430 sx |
Permit History (4)
Applications (4)
Records & Logs
9 completion filings on record · 2 with log images at RRC.
+3 more filings
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
- 25
- Max Depth
- 8,300 ft
- Drill Type
- Vertical
- County
- NUECES
- District
- 4
- Operator
- UNION PACIFIC RESOURCES COMPANY
- Completed
- 1988-04-28
Operator
- Name
- UNION PACIFIC RES CO
- Location
- FORT WORTH
- P-5 Status
- Inactive (filed 2000-05-02)
- Cum Oil (all leases)
- 75,300,375 bbl
- Cum Gas (all leases)
- 1,818,873,181 mcf
- Total Permits
- 5,638