MARATHON OIL EF LLC Wells and Activity Summary
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MARATHON OIL EF LLC is an oil and gas drilling operator with wells in
9 counties, that include Live Oak county, McMullen county and Lavaca county.
They have most recently worked on a well named "ELIZONDO 01" that rests in the SUGARKANE (EAGLE FORD) field in Karnes county.
In total, MARATHON OIL EF LLC has worked on 10231 wells across Texas with the most current well having been updated in May of 2026.
Wells operated by MARATHON OIL EF LLC have been declining over the last four months with 44 fewer wells initiated in the last two months than in the previous 60 day period.
Recent wells
| Well Name | County | Last Update | API |
|---|---|---|---|
| ELIZONDO 01 | Karnes | 2026-05-08 | 25538101 |
| ELIZONDO 01 | Karnes | 2026-05-01 | 25538099 |
| ELIZONDO 01 | Karnes | 2026-05-01 | 25538100 |
| BARNHART (EF) | Gonzales | 2026-04-28 | 17734706 |
| BARNHART (EF)-HFS SA2 | Gonzales | 2026-04-17 | 17734749 |
| BARNHART (EF)-HFS SA3 | Gonzales | 2026-04-17 | 17734750 |
| BARNHART (EF)-HFS SA1 | Gonzales | 2026-04-17 | 17734748 |
| BARNHART (EF)-HFS SA5 | Gonzales | 2026-04-17 | 17734752 |
| 74 RANCH E | Atascosa | 2026-04-10 | 01336200 |
| BARNHART (EF)-HFS SA4 | Gonzales | 2026-04-07 | 17734751 |