OPERATORS · TEXAS · P-5 NUMBER 525398 · LIVE OAK COUNTY
Marathon Oil EF LLC in Live Oak County
One operator, one county: its permits, wells of record, formations, and leases here, with the rest of the county and the rest of the operator one click away.
Marathon Oil Ef LLC has 184 drilling permits on file in Live Oak County, the first issued in 2010 and the latest on September 21, 2026.
4 of them came in the last twelve months, after none the year before; 100% horizontal, averaging 17,500 ft.
It is operator of record on 355 wells in the county: 299 producing, 20 shut in, 0 injection.
Its completed wells here most often report Austin Chalk, Eagle Ford, Wilcox.
- 4
- permits, 12 months
- 184
- permits, all time since 2010
- 100%
- horizontal, 12 months
- 17,500
- ft average depth, 12 months
- 355
- wells of record
- 299
- producing · 20 shut in · 0 injection
Permits issued by month
LAST FIVE YEARS · LIVE OAK ONLY
Last 12 months 4 · prior 12 0
Latest permits here
| Issued | Lease / well | Type | Depth |
|---|---|---|---|
| Sep 21, 2026 | Whitsett-Taylor-Mass SA C #1 918398 | DrillHZ | 17,500 |
| Sep 21, 2026 | Whitsett-Taylor-Mass SA B #1 918391 | DrillHZ | 17,500 |
| Sep 21, 2026 | Whitsett-Taylor-Mass SA D #1 918399 | DrillHZ | 17,500 |
| Sep 21, 2026 | Whitsett-Taylor-Mass SA A #1 918390 | DrillHZ | 17,500 |
| Sep 21, 2026 | Whitsett-Taylor-Mass SA D #1 918399 | DrillHZ | 17,500 |
| Sep 21, 2026 | Whitsett-Taylor-Mass SA C #1 918398 | DrillHZ | 17,500 |
| Sep 21, 2026 | Whitsett-Taylor-Mass SA B #1 918391 | DrillHZ | 17,500 |
| Sep 21, 2026 | Whitsett-Taylor-Mass SA A #1 918390 | DrillHZ | 17,500 |
| Mar 7, 2024 | Guajillo-Stch SA4 #4H 897444 | DrillHZ | 22,000 |
| Feb 28, 2024 | Guajillo-Stch SA2 #2H 897442 | DrillHZ | 22,000 |
All 184 permits in Live Oak County, searchable → · Wells of record here →
Permit types and formations
Permit types
- Drill
- 4 / 183
- Recompletion
- 0 / 1
12 MONTHS / ALL TIME
Formations reported
- Austin Chalk
- 312
- Eagle Ford
- 312
- Wilcox
- 215
- Queen City
- 208
- Jackson
- 207
- Frio
- 207
- Edwards
- 201
- Sligo
- 192
- Midway
- 82
Leases it reports here
| Lease | Wells | Oil, bbl | Last reported |
|---|---|---|---|
| Julie Beck | 16 | 2.55M | Apr 2026 |
| Three Sisters 01 | 12 | 2.4M | Apr 2026 |
| San Christoval Ranch Unit A | 11 | 2.06M | Apr 2026 |
| Guajillo West | 9 | 2.03M | Apr 2026 |
| McCoy-Rafters Unit | 6 | 1.68M | Apr 2026 |
| McCoy-Hamilton Unit | 6 | 1.53M | Apr 2026 |
| 74 Ranch-Guajillo Unit A | 4 | 1.17M | Apr 2026 |
| Guajillo Unit 11 North | 5 | 1.13M | Apr 2026 |
| Guajillo Unit 12 North | 4 | 1M | Apr 2026 |
| Guajillo Unit 10 South | 5 | 929K | Apr 2026 |
| Smith-West Unit | 6 | 782K | Apr 2026 |
| Guajillo Unit 10 North | 4 | 737K | Apr 2026 |
| San Christoval Ranch Unit B | 9 | 681K | Apr 2026 |
| Ethridge Unit A | 4 | 680K | Apr 2026 |
| Guajillo Unit 12 South | 4 | 664K | Apr 2026 |
All leases it reports → · Other operators in Live Oak County →
About this data
Permits from the RRC OGA049M master and daily daf420 files; wells of record and status from the EWA wellbore schedule, weekly; formations from the dbf900 wellbore file; leases from PDQ lease reports, placed in the county by the wells completed on them.
Developers: this page as JSON is GET /v1/data/operators/tx/525398/counties/live-oak, documented in the API reference.