42-427-04994
UMCGILL BROS.
STARR County · District 4 · EXXON MOBIL CORPORATION · KELSEY SOUTH (ZONE 21-V W)
Permits
3
Max Depth
6,350 ft
First Permit
1977-11-18
Latest Activity
1989-03-17
Lifespan
11 yrs
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1975-09-22
Shut-In
—
Plugged
2008-09-25
EWA / Production operator mismatch
Scheduling: EXXON MOBIL CORPORATION ≠ Production: OVERTON PARK OIL & GAS LP (reported 2026-04)
EWA / Permit operator mismatch
Scheduling: EXXON MOBIL CORPORATION ≠ Permit: EXXON CORP.
Resolved via: production → OVERTON PARK OIL & GAS LP
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
No tops on file for this well. Formation tops come from W-2/G-1 completion filings — this well has none yet, which is normal for permits that were never drilled, dry holes plugged without a filing, or wells completed before digital records. Offset-well tops can't be shown either — this well has no surface coordinates on file yet.
Perforations (5)
| Interval | Type |
|---|---|
| 5,163–5,176 ft | Perforated |
| 5,203–5,211 ft | Perforated |
| 5,451–6,234 ft | Perforated |
| 6,172–6,188 ft | Perforated |
| ?–6,172 ft | Perforated |
Casing (8)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,545 ft | 480 sx |
| 8.625" | 1,545 ft | 480 sx |
| 2.875" | 6,331 ft | — |
| 2.875" | 6,331 ft | — |
| — | 6,331 ft | — |
| 2.875" | 6,332 ft | 395 sx |
| 2.875" | 6,332 ft | 395 sx |
| 2.875" | 6,351 ft | — |
Permit History (3)
Applications (3)
Records & Logs
7 completion filings on record · 2 with log images at RRC.
+1 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
- 396
- Max Depth
- 6,350 ft
- Drill Type
- Vertical
- County
- STARR
- District
- 4
- Operator
- EXXON MOBIL CORPORATION
- Completed
- 1975-09-22
Operator
- Name
- EXXON MOBIL CORP
- Location
- SPRING
- P-5 Status
- Delinquent (filed 2025-04-16)
- Cum Oil (all leases)
- 155,164,556 bbl
- Cum Gas (all leases)
- 2,032,561,175 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G
- Total Permits
- 1,223