42-013-35259
PRODUCING HorizontalGUAJILLO EAST
ATASCOSA County · District 1 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-1)
Permits
1
Max Depth
18,000 ft
First Permit
2014-12-12
Latest Activity
2014-12-12
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2021-11-08
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
2014-03
Last Production
2026-07
Injection / Disposal
Permitted Volume
5,000 mcf/d
Max Pressure
—
Injection Interval
10,731–11,292 ft
Injected (12mo)
—
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (10) Elevation 383 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| QUEEN CITY | 2,988 ft | -2,605 ft |
| REKLAW | 3,350 ft | -2,967 ft |
| BARTOSH | 3,749 ft | -3,366 ft |
| CARRIZO | 3,990 ft | -3,607 ft |
| WILCOX - DISPOSAL (Wilcox) | 5,278 ft | -4,895 ft |
| NAVARRO - H2S (Navarro) | 8,940 ft | -8,557 ft |
| ESCONDIDO - H2S, DISPOSAL (Escondido) | 9,000 ft | -8,617 ft |
| OLMOS - DISPOSAL (Olmos) | 9,277 ft | -8,894 ft |
| ANACACHO - H2S (Anacacho) | 10,652 ft | -10,269 ft |
| AUSTIN CHALK - H2S, DISPOSAL (Austin Chalk) | 10,885 ft | -10,502 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 |
|---|---|
| 11,981–16,927 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 5,268 ft | 1,645 sx |
| 5.5" | 17,018 ft | 1,940 sx |
Permit History (1)
Applications (1)
Records & Logs
4 completion filings on record · 2 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
- 66H
- Max Depth
- 18,000 ft
- Drill Type
- Horizontal
- County
- ATASCOSA
- District
- 1
- Operator
- MARATHON OIL EF LLC
- Completed
- 2021-11-08
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