42-255-37268
PRODUCING HorizontalALEXANDER 01 AC
KARNES County · District 2 · MARATHON OIL EF LLC · SUGARKANE (AUSTIN CHALK)
Permits
2
Max Depth
25,000 ft
First Permit
2021-08-06
Latest Activity
2021-08-06
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2022-05-31
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: MARATHON OIL EF LLC ≠ Permit: ENSIGN 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
2022-05
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 368 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YEGUA - DISPOSAL (Yegua) | 2,796 ft | -2,428 ft |
| QUEEN CITY | 5,228 ft | -4,860 ft |
| REKLAW | 5,550 ft | -5,182 ft |
| CARRIZO | 6,080 ft | -5,712 ft |
| WILCOX - DISPOSAL (Wilcox) | 7,554 ft | -7,186 ft |
| AUSTIN CHALK - H2S (Austin Chalk) | 12,625 ft | -12,257 ft |
| EAGLE FORD - H2S (Eagle Ford) | — | — |
| EDWARDS - H2S (Edwards) | — | — |
| FRIO - DISPOSAL (Frio) | — | — |
| 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 ↗
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 |
|---|---|
| 12,788–20,818 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,760 ft | 1,243 sx |
| 9.625" | 9,224 ft | 2,164 sx |
| 5.5" | 20,885 ft | 4,010 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
- 01H
- Max Depth
- 25,000 ft
- Drill Type
- Horizontal
- County
- KARNES
- District
- 2
- Operator
- MARATHON OIL EF LLC
- Completed
- 2022-05-31
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