42-013-34580
PRODUCING HorizontalMIDDLE MCCOWEN
ATASCOSA County · District 1 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-1)
Permits
1
Max Depth
18,460 ft
First Permit
2012-07-31
Latest Activity
2012-07-31
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2024-07-11
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
2011-08
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 (18) Elevation 292 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| QUEEN CITY | 830 ft | -538 ft |
| CARRIZO | 1,580 ft | -1,288 ft |
| REKLAW | 1,900 ft | -1,608 ft |
| ESCONDIDO | 2,600 ft | -2,308 ft |
| ESCONDIDO - H2S, DISPOSAL (Escondido) | 2,600 ft | -2,308 ft |
| BARTOSH | 3,150 ft | -2,858 ft |
| NAVARRO | 3,600 ft | -3,308 ft |
| NAVARRO - H2S (Navarro) | 3,600 ft | -3,308 ft |
| WILCOX | 5,110 ft | -4,818 ft |
| WILCOX - DISPOSAL (Wilcox) | 5,110 ft | -4,818 ft |
| EDWARDS - H2S, DISPOSAL (Edwards) | 7,080 ft | -6,788 ft |
| GEORGETOWN | 7,390 ft | -7,098 ft |
| GEORGETOWN - H2S (Georgetown) | 7,390 ft | -7,098 ft |
| OLMOS | 8,841 ft | -8,549 ft |
| OLMOS - DISPOSAL (Olmos) | 8,841 ft | -8,549 ft |
| ANACACHO | 10,433 ft | -10,141 ft |
| AUSTIN CHALK | 10,690 ft | -10,398 ft |
| EAGLE FORD | 10,796 ft | -10,504 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 |
|---|---|
| 11,046–17,315 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 5,220 ft | 1,280 sx |
| 5.5" | 17,490 ft | 1,895 sx |
Permit History (1)
Applications (1)
Records & Logs
6 completion filings on record · 3 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
- 21H
- Max Depth
- 18,460 ft
- Drill Type
- Horizontal
- County
- ATASCOSA
- District
- 1
- Operator
- MARATHON OIL EF LLC
- Completed
- 2024-07-11
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
- 3,175