42-013-35663
PRODUCING HorizontalHEARD BOWER WEST UNIT
ATASCOSA County · District 1 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-1)
Permits
2
Max Depth
11,000 ft
First Permit
2018-11-01
Latest Activity
2018-12-31
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2019-07-24
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: MARATHON OIL EF LLC ≠ Permit: TEAL OPERATING, LLC
Resolved via: production → MARATHON OIL EF 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
2011-09
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 (10) Elevation 259 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CARRIZO | 3,900 ft | -3,641 ft |
| ANACACHO - H2S (Anacacho) | 10,479 ft | -10,220 ft |
| AUSTIN CHALK - H2S, DISPOSAL (Austin Chalk) | 10,775 ft | -10,516 ft |
| BARTOSH | — | — |
| ESCONDIDO - H2S, DISPOSAL (Escondido) | — | — |
| NAVARRO - H2S (Navarro) | — | — |
| OLMOS - DISPOSAL (Olmos) | — | — |
| QUEEN CITY | — | — |
| REKLAW | — | — |
| WILCOX - DISPOSAL (Wilcox) | — | — |
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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (1)
| Interval | Type |
|---|---|
| 11,065–19,357 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 5,223 ft | 1,360 sx |
| 5.5" | 19,466 ft | 3,070 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.
Well Details
- Well Number
- 18H
- Max Depth
- 11,000 ft
- Drill Type
- Horizontal
- County
- ATASCOSA
- District
- 1
- Operator
- MARATHON OIL EF LLC
- Completed
- 2019-07-24
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