OPERATORS · TEXAS · P-5 NUMBER 525398 · MCMULLEN COUNTY
Marathon Oil EF LLC in McMullen 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 61 drilling permits on file in Mcmullen County, the first issued in 2012 and the latest on January 28, 2019.
None were issued in the last twelve months.
It is operator of record on 37 wells in the county: 32 producing, 5 shut in, 0 injection.
Its completed wells here most often report Anacacho, Austin Chalk, Eagle Ford.
- 0
- permits, 12 months
- 61
- permits, all time since 2012
- —
- horizontal, 12 months
- —
- ft average depth, 12 months
- 37
- wells of record
- 32
- producing · 5 shut in · 0 injection
Permits issued by month
LAST FIVE YEARS · MCMULLEN ONLY
Last 12 months 0 · prior 12 0
Latest permits here
| Issued | Lease / well | Type | Depth |
|---|---|---|---|
| Jan 28, 2019 | Middle McCowen #102H 849164 | DrillHZ | 24,000 |
| Jan 28, 2019 | Middle McCowen #101H 849163 | DrillHZ | 24,000 |
| Jan 28, 2019 | Middle McCowen #100H 849162 | DrillHZ | 24,000 |
| Jan 28, 2019 | Middle McCowen #99H 849161 | DrillHZ | 24,000 |
| Jul 5, 2017 | Middle McCowen #98H 828017 | DrillHZ | 22,500 |
| Jun 30, 2017 | Middle McCowen #93H 828018 | DrillHZ | 22,500 |
| Jun 28, 2017 | Middle McCowen #92H 828019 | DrillHZ | 22,500 |
| Jun 28, 2017 | Middle McCowen #92H 828019 | DrillHZ | 22,500 |
| Apr 20, 2016 | Middle McCowen #91H 814942 | DrillHZ | 21,000 |
| Apr 20, 2016 | Middle McCowen #90H 814941 | DrillHZ | 21,000 |
All 61 permits in McMullen County, searchable → · Wells of record here →
Permit types and formations
Permit types
- Drill
- 0 / 61
12 MONTHS / ALL TIME
Formations reported
Leases it reports here
| Lease | Wells | Oil, bbl | Last reported |
|---|---|---|---|
| Middle McCowen | 125 | 30.4M | Apr 2026 |
| 74 Ranch Special Unit East | 5 | 1.48M | Apr 2026 |
| 74 Ranch Special Unit West | 4 | 863K | Apr 2026 |
| Smith-West Unit | 6 | 782K | Apr 2026 |
All leases it reports → · Other operators in McMullen 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/mcmullen, documented in the API reference.