42-123-33221
PRODUCING HorizontalBOLDT 01
DE WITT County · District 2 · MARATHON OIL EF LLC · DE WITT (EAGLE FORD SHALE)
Permits
1
Max Depth
21,000 ft
First Permit
2013-07-26
Latest Activity
2013-07-26
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2016-02-02
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: MARATHON OIL EF LLC ≠ Permit: PIONEER NATURAL RES. USA, INC.
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
2014-09
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 (13) Elevation 322 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| FRIO | 900 ft | -578 ft |
| VICKSBURG | 2,247 ft | -1,925 ft |
| VICKSBURG | 2,250 ft | -1,928 ft |
| YEGUA | 3,146 ft | -2,824 ft |
| YEGUA | 3,147 ft | -2,825 ft |
| WILCOX | 6,229 ft | -5,907 ft |
| WILCOX | 6,255 ft | -5,933 ft |
| AUSTIN CHALK | 12,917 ft | -12,595 ft |
| AUSTIN CHALK | 13,122 ft | -12,800 ft |
| EAGLE FORD | 13,414 ft | -13,092 ft |
| EAGLE FORD | 13,432 ft | -13,110 ft |
| CATAHOULA | — | — |
| EDWARDS - H2S (Edwards) | — | — |
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 |
|---|---|
| 13,640–19,812 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 9.625" | 4,240 ft | 1,170 sx |
| 5.5" | 19,934 ft | 2,935 sx |
Permit History (1)
Applications (1)
Records & Logs
2 completion filings 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
- 05H
- Max Depth
- 21,000 ft
- Drill Type
- Horizontal
- County
- DE WITT
- District
- 2
- Operator
- MARATHON OIL EF LLC
- Completed
- 2016-02-02
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