42-297-35804
PRODUCING HorizontalGUAJILLO UNIT 12 SOUTH
LIVE OAK County · District 2 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-2)
Permits
2
Max Depth
17,100 ft
First Permit
2015-10-21
Latest Activity
2015-10-21
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2016-06-07
Shut-In
—
Plugged
—
P-5 Org Status: Active
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
2016-06
Last Production
2026-07
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (10) Elevation 252 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| FRIO - DISPOSAL (Frio) | 327 ft | -75 ft |
| HOCKLEY - DISPOSAL | 426 ft | -174 ft |
| JACKSON-YEGUA - DISPOSAL (Jackson) | 1,270 ft | -1,018 ft |
| COOK MOUNTAIN | 1,993 ft | -1,741 ft |
| QUEEN CITY | 3,042 ft | -2,790 ft |
| WILCOX | 5,332 ft | -5,080 ft |
| AUSTIN CHALK | 11,040 ft | -10,788 ft |
| EAGLE FORD - H2S (Eagle Ford) | 11,141 ft | -10,889 ft |
| EDWARDS - H2S (Edwards) | — | — |
| SLIGO - H2S (Sligo) | — | — |
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 |
|---|---|
| 11,680–16,338 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 5,438 ft | 1,704 sx |
| 5.5" | 16,440 ft | 2,807 sx |
Permit History (2)
Applications (2)
Records & Logs
1 completion filing 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
- 4H
- Max Depth
- 17,100 ft
- Drill Type
- Horizontal
- County
- LIVE OAK
- District
- 2
- Operator
- MARATHON OIL EF LLC
- Completed
- 2016-06-07
Operator
- Name
- MARATHON OIL EF LLC
- Location
- HOUSTON
- P-5 Status
- Active (filed 2025-09-26)
- Cum Oil (all leases)
- 409,189,156 bbl
- Cum Gas (all leases)
- 1,029,735,602 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 3,173