Oil & Gas Operator
Here are a few key data points for Marathon Oil Ef LLC. This page represents an aggregation of wells ( and leases where applicable ) to provide a more complete view when looking at oil and gas properties in the U.S.
| Operating State | TX |
|---|---|
| Production Dates | Oct 2010 - Apr 2026 |
| Total Oil Production | 555,343,773 BBLs |
| Total Gas Production | 1,685,706,945 MCF |
| Estimated Daily Oil Prod. | 80,195 BBLs |
| Estimated Daily Gas Prod. | 273,799 MCF |
| Estimated Daily Water Prod. | 74,987 BBLs |
| Producing Wells | 2,405 |
| API # | Well Name | Status | County | Est. Daily Oil Prod. | Est. Daily Gas Prod. | Est. Daily Water Prod. | Latitude | Longitude |
|---|---|---|---|---|---|---|---|---|
| API # | Well Name | Status | County | Est. Daily Oil Prod. | Est. Daily Gas Prod. | Est. Daily Water Prod. | Latitude | Longitude |
| 42-013-36200 | 74 RANCH E 11 | PRODUCING | Atascosa County, TX | 28.689404 | -98.353623 | |||
| 42-177-34695 | BARNHART (EF) 63H | PRODUCING | Gonzales County, TX | 29.238774 | -97.476571 | |||
| 42-177-34754 | BARNHART (EF)-HFS SA7 135H | PRODUCING | Gonzales County, TX | 29.316221 | -97.501686 | |||
| 42-177-34703 | BARNHART (EF)-J.M. PRESTON SA1 115H | PRODUCING | Gonzales County, TX | 29.302155 | -97.506669 | |||
| 42-255-38165 | BEST FENNER-MORGAN SA1 1H | Horizontal Well Surface Locatio | Karnes County, TX | 28.820124 | -98.007918 | |||
| 42-255-38154 | DAVIS-ALEXANDER SA1 1H | PRODUCING | Karnes County, TX | 28.864128 | -97.835370 | |||
| 42-255-38153 | DAVIS-MENSIK SA1 1H | PRODUCING | Karnes County, TX | 28.864141 | -97.835475 | |||
| 42-255-38099 | ELIZONDO 01 07H | Horizontal Well Surface Locatio | Karnes County, TX | 28.928715 | -97.728966 | |||
| 42-255-38100 | ELIZONDO 01 08H | Horizontal Well Surface Locatio | Karnes County, TX | 28.928784 | -97.728964 | |||
| 42-255-38101 | ELIZONDO 01 09H | Horizontal Well Surface Locatio | Karnes County, TX | 28.928851 | -97.728966 | |||
| 42-255-38147 | FELIX UNIT 3H | Horizontal Well Surface Locatio | Karnes County, TX | 28.843259 | -98.023457 | |||
| 42-255-38146 | FELIX UNIT 4H | Horizontal Well Surface Locatio | Karnes County, TX | 28.843195 | -98.023432 | |||
| 42-255-38145 | FELIX UNIT 5H | Horizontal Well Surface Locatio | Karnes County, TX | 28.843128 | -98.023410 | |||
| 42-255-38148 | FELIX UNIT 9H | Horizontal Well Surface Locatio | Karnes County, TX | 28.843326 | -98.023482 | |||
| 42-255-38149 | FELIX-SMITH MELLICK SA 1H | Horizontal Well Surface Locatio | Karnes County, TX | 28.843065 | -98.023385 | |||
| 42-255-38259 | FRANSEN-DIRECT ASSETS SA2 2H | Horizontal Well Surface Locatio | Karnes County, TX | 28.808058 | -97.979979 | |||
| 42-013-36186 | HIERHOLZER RETZLOFF-MCMAHON SA2 2H | PRODUCING | Atascosa County, TX | 28.806286 | -98.139033 | |||
| 42-013-36185 | HIERHOLZER RETZLOFF-MCMAHON SA3 3H | PRODUCING | Atascosa County, TX | 28.806247 | -98.139118 | |||
| 42-255-38271 | JOHNSON-TSCHIRHART UNIT 10H | Horizontal Well Surface Locatio | Karnes County, TX | 28.776054 | -97.934476 | |||
| 42-255-38268 | JOHNSON-TSCHIRHART UNIT 7H | Horizontal Well Surface Locatio | Karnes County, TX | 28.775796 | -97.934369 | |||
| 42-255-38269 | JOHNSON-TSCHIRHART UNIT 8H | Horizontal Well Surface Locatio | Karnes County, TX | 28.775861 | -97.934396 | |||
| 42-255-38270 | JOHNSON-TSCHIRHART UNIT 9H | Horizontal Well Surface Locatio | Karnes County, TX | 28.775925 | -97.934423 | |||
| 42-255-38272 | JOHNSON-TSCHIRHART UNIT AC 10H | Horizontal Well Surface Locatio | Karnes County, TX | 28.775990 | -97.934449 | |||
| 42-255-38106 | KIRK-LONG SA1 1H | PRODUCING | Karnes County, TX | 28.916233 | -97.690134 | |||
| 42-123-35347 | KOOPMAN 01-L 01-S 01-A 01 SA1 01H | PRODUCING | DeWitt County, TX | 29.038751 | -97.556760 | |||
| 42-123-35348 | KOOPMAN 01-L 01-S 01-A 01 SA2 02H | PRODUCING | DeWitt County, TX | 29.038811 | -97.556722 | |||
| 42-255-37998 | LISKA-ELIZONDO SA1 1H | PRODUCING | Karnes County, TX | 28.916025 | -97.718408 | |||
| 42-013-36220 | MCS FOUNDATION UNIT 7H | PRODUCING | Atascosa County, TX | 28.761987 | -98.199741 | |||
| 42-013-36222 | MCS FOUNDATION UNIT 9H | PRODUCING | Atascosa County, TX | 28.762090 | -98.199841 | |||
| 42-013-36223 | MCS FOUNDATION-TOM FAMILY USW A 1 | PRODUCING | Atascosa County, TX | 28.762143 | -98.199891 | |||
| 42-013-36215 | MIDDLE MCCOWEN 133HR | PRODUCING | Atascosa County, TX | 28.692466 | -98.365442 | |||
| 42-013-36098 | MIDDLE MCCOWEN 175H | PRODUCING | Atascosa County, TX | 28.664346 | -98.372838 | |||
| 42-013-36104 | MIDDLE MCCOWEN 181H | PRODUCING | Atascosa County, TX | 28.672060 | -98.361835 | |||
| 42-013-36197 | MIDDLE MCCOWEN 191H | PRODUCING | Atascosa County, TX | 28.692331 | -98.365617 | |||
| 42-013-35966 | MIDDLE MCCOWEN 289H | PRODUCING | Atascosa County, TX | 28.692646 | -98.365211 | |||
| 42-255-38261 | MILLER RIDOUT MIKKELSON SA1 1H | Horizontal Well Surface Locatio | Karnes County, TX | 28.870405 | -97.927594 | |||
| 42-255-38265 | MILLER RIDOUT MIKKELSON SA3 3H | Horizontal Well Surface Locatio | Karnes County, TX | 28.870475 | -97.927594 | |||
| 42-255-38262 | MILLER-RIDOUT UNIT 502H | Horizontal Well Surface Locatio | Karnes County, TX | 28.870544 | -97.927594 | |||
| 42-255-38061 | PATINO UNIT 5H | PRODUCING | Karnes County, TX | 28.777378 | -97.912797 | |||
| 42-255-38060 | PATINO UNIT 9H | PRODUCING | Karnes County, TX | 28.777329 | -97.912850 | |||
| 42-255-38059 | PATINO-FRANKE UNIT SA1 1H | PRODUCING | Karnes County, TX | 28.777278 | -97.912906 | |||
| 42-013-36205 | R MAY A-MAY GIRLS CHAPMAN SA2 2H | PRODUCING | Atascosa County, TX | 28.713705 | -98.240500 | |||
| 42-013-36204 | R MAY A-SCHROEDER CHAPMAN SA1 1H | PRODUCING | Atascosa County, TX | 28.713618 | -98.240619 | |||
| 42-013-36203 | R. MAY A 13H | PRODUCING | Atascosa County, TX | 28.713661 | -98.240560 | |||
| 42-255-38077 | REYNOLDS GAS UNIT 2 2H | PRODUCING | Karnes County, TX | 28.905886 | -97.777381 | |||
| 42-255-38078 | REYNOLDS GAS UNIT 2 3H | PRODUCING | Karnes County, TX | 28.905833 | -97.777433 | |||
| 42-255-38118 | RIDLEY 01 12H | PRODUCING | Karnes County, TX | 28.893355 | -97.774491 | |||
| 42-255-38120 | RIDLEY 01 13H | PRODUCING | Karnes County, TX | 28.893321 | -97.774397 | |||
| 42-255-38121 | RIDLEY 01 16H | PRODUCING | Karnes County, TX | 28.893405 | -97.774522 | |||
| 42-255-38057 | RIPPSTEIN-HONS RAFTER SA1 1H | PRODUCING | Karnes County, TX | 28.893699 | -97.951189 |
| Lease # | Lease Name | County | Monthly Oil Prod. | Monthly Gas Prod. |
|---|---|---|---|---|
| Lease # | Lease Name | County | Monthly Oil Prod. | Monthly Gas Prod. |
| 01-21737 | 74 RANCH E | Atascosa County, TX | ||
| 01-20608 | 74 RANCH UNIT S3 | Atascosa County, TX | ||
| 01-15397 | BARNHART (EF) | Gonzales County, TX | ||
| 01-16813 | BARNHART (EF) H | Gonzales County, TX | ||
| 02-13128 | BARNHART (EF)-HFS SA1 | Gonzales County, TX | ||
| 02-13181 | BARNHART (EF)-HFS SA2 | Gonzales County, TX | ||
| 02-13148 | BARNHART (EF)-HFS SA3 | Gonzales County, TX | ||
| 02-13134 | BARNHART (EF)-HFS SA4 | Gonzales County, TX | ||
| 02-13152 | BARNHART (EF)-HFS SA5 | Gonzales County, TX | ||
| 02-13118 | BARNHART (EF)-HFS SA6 | Gonzales County, TX | ||
| 02-13130 | BARNHART (EF)-HFS SA7 | Gonzales County, TX | ||
| 02-13135 | BARNHART (EF)-HFS SA8 | Gonzales County, TX | ||
| 01-21712 | BARNHART (EF)-J.M. PRESTON SA1 | Gonzales County, TX | ||
| 02-13131 | BARNHART (EF)-J.M. PRESTON SA10 | Gonzales County, TX | ||
| 02-13129 | BARNHART (EF)-J.M. PRESTON SA6 | Gonzales County, TX | ||
| 02-300842 | DAVIS-ALEXANDER SA1 1H | Karnes County, TX | ||
| 02-300819 | DAVIS-MENSIK SA1 1H | Karnes County, TX | ||
| 01-21213 | DEATLEY GRIFFIN MAY SA5 | Atascosa County, TX | ||
| 02-298263 | DEBILL-LISKA SA1 1H | Karnes County, TX | ||
| 02-298251 | DEMING-DEBILL SA1 1H | Karnes County, TX | ||
| 02-298466 | DEMING-LONG SA1 1H | Karnes County, TX | ||
| 01-17741 | GUAJILLO EAST | Atascosa County, TX | ||
| 01-21771 | HIERHOLZER RETZLOFF-MCMAHON SA1 | Atascosa County, TX | ||
| 01-21772 | HIERHOLZER RETZLOFF-MCMAHON SA2 | Atascosa County, TX | ||
| 01-21723 | HIERHOLZER RETZLOFF-MCMAHON SA3 | Atascosa County, TX | ||
| 02-10539 | HONS RAFTER UNIT | Karnes County, TX | ||
| 02-298042 | HOPE-BRUNS SA1 1H | DeWitt County, TX | ||
| 02-10590 | JAUER-SONKA UNIT | Karnes County, TX | ||
| 02-299069 | KIRK-LONG SA1 1H | Karnes County, TX | ||
| 02-296667 | KOOPMAN 01-L 01-S 01-A 01 SA1 01H | DeWitt County, TX | ||
| 02-296675 | KOOPMAN 01-L 01-S 01-A 01 SA2 02H | DeWitt County, TX | ||
| 02-298219 | LISKA-ELIZONDO SA1 1H | Karnes County, TX | ||
| 01-21791 | MCS FOUNDATION UNIT | Atascosa County, TX | ||
| 01-21800 | MCS FOUNDATION-TOM FAMILY USW A | Atascosa County, TX | ||
| 01-15638 | MIDDLE MCCOWEN | Atascosa County, TX | ||
| 02-296666 | OLSON ESSE-KENNEDY SA2 2H | Karnes County, TX | ||
| 02-299805 | PATINO UNIT 5H | Karnes County, TX | ||
| 02-299074 | PATINO UNIT 9H | Karnes County, TX | ||
| 02-299143 | PATINO-FRANKE UNIT SA1 1H | Karnes County, TX | ||
| 01-21798 | R MAY A-MAY GIRLS CHAPMAN SA2 | Atascosa County, TX | ||
| 01-21797 | R MAY A-SCHROEDER CHAPMAN SA1 | Atascosa County, TX | ||
| 01-16012 | R. MAY A | Atascosa County, TX | ||
| 01-21496 | RETZLOFF-MAY-TOM SA1 | Atascosa County, TX | ||
| 02-10222 | REYNOLDS GAS UNIT 2 | Karnes County, TX | ||
| 02-11355 | RIDLEY 01 | Karnes County, TX | ||
| 02-297962 | RIDLEY FARMS-DOUGLAS SA1 1H | Karnes County, TX | ||
| 02-12866 | RIPPSTEIN-HONS RAFTER SA1 | Karnes County, TX | ||
| 01-21658 | STEWART GIESE HENKE SA4 | Atascosa County, TX | ||
| 02-10062 | TIPTON-JONAS UNIT | Karnes County, TX | ||
| 01-20500 | TOM-SMITH UNIT C | Atascosa County, TX |
| Property Name | County | Period | Monthly Oil Prod. | Monthly Gas Prod. | Production Range | Active Wells |
|---|---|---|---|---|---|---|
| Property Name | County | Period | Monthly Oil Prod. | Monthly Gas Prod. | Production Range | Active Wells |
| BAILEY-RETZLOFF UNIT | Karnes County, TX | Dec 2025 | 5,218 BBLs | 40,416 MCF | Oct 2012 - Jan 2026 | 21 |
| BARNHART | Gonzales County, TX | Dec 2025 | 218,413 BBLs | 240,820 MCF | Jul 2010 - Jan 2026 | 122 |
| BARNHART (EF) H UNIT SA | Gonzales County, TX | Dec 2025 | 8,405 BBLs | 5,109 MCF | Aug 2023 - Jan 2026 | 2 |
| BARNHART (EF)-J.M. PRESTON SA | Gonzales County, TX | Dec 2025 | 49,697 BBLs | 31,657 MCF | Oct 2023 - Jan 2026 | 7 |
| BEAM MEYER-RICHARD BUTLER B SA | Karnes County, TX | Dec 2025 | 14,274 BBLs | 25,723 MCF | Aug 2024 - Jan 2026 | 3 |
| BEAM MEYER-TINA BUTLER SA1 | Karnes County, TX | Dec 2025 | 6,957 BBLs | 13,274 MCF | Aug 2024 - Jan 2026 | 1 |
| BEST BATEMAN | Karnes County, TX | Dec 2025 | 7,904 BBLs | 9,524 MCF | Aug 2025 - Jan 2026 | 8 |
| BEST FENNER | Karnes County, TX | Dec 2025 | 12,325 BBLs | 36,270 MCF | Aug 2025 - Jan 2026 | 9 |
| BILSKY-CHUMCHAL SA | Gonzales County, TX | Dec 2025 | 6,632 BBLs | 13,449 MCF | Nov 2022 - Jan 2026 | 3 |
| CHALLENGER | Karnes County, TX | Dec 2025 | 22,820 BBLs | 49,423 MCF | Feb 2013 - Jan 2026 | 39 |
| CHAPMAN HUMMEL | Karnes County, TX | Dec 2025 | 8,426 BBLs | 15,205 MCF | Oct 2012 - Jan 2026 | 5 |
| CHILDRENS WESTON UNIT | Karnes County, TX | Dec 2025 | 4,703 BBLs | 37,557 MCF | May 2012 - Jan 2026 | 18 |
| COY CITY RANCH | Karnes County, TX | Dec 2025 | 8,273 BBLs | 22,153 MCF | May 2011 - Jan 2026 | 18 |
| DAVILA UNIT | Karnes County, TX | Dec 2025 | 7,630 BBLs | 60,530 MCF | Jul 2012 - Jan 2026 | 20 |
| DAVILA-GRAHAM | Karnes County, TX | Dec 2025 | 7,193 BBLs | 39,729 MCF | Sep 2012 - Jan 2026 | 10 |
| DAVIS | Karnes County, TX | Dec 2025 | 6,268 BBLs | 37,981 MCF | Jan 2011 - Jan 2026 | 14 |
| DAVIS-ALEXANDER SA1 1H | Karnes County, TX | Dec 2025 | 23,841 BBLs | 133,279 MCF | Apr 2025 - Jan 2026 | 1 |
| DAVIS-MENSIK SA1 1H | Karnes County, TX | Dec 2025 | 26,670 BBLs | 131,977 MCF | Apr 2025 - Jan 2026 | 1 |
| DEATLEY HOLLUB | Atascosa County, TX | Dec 2025 | 9,540 BBLs | 10,421 MCF | Nov 2011 - Jan 2026 | 9 |
| DEATLEY-GRIFFIN | Atascosa County, TX | Dec 2025 | 25,285 BBLs | 17,093 MCF | Nov 2011 - Jan 2026 | 5 |
| DEBILL-LISKA SA1 1H | Karnes County, TX | Dec 2025 | 5,110 BBLs | 54,222 MCF | Sep 2024 - Jan 2026 | 1 |
| DEMING-DEBILL SA1 1H | Karnes County, TX | Dec 2025 | 4,917 BBLs | 57,283 MCF | Sep 2024 - Jan 2026 | 1 |
| DEMING-HERBERN SA1 | Karnes County, TX | Dec 2025 | 4,301 BBLs | 54,037 MCF | Sep 2024 - Jan 2026 | 1 |
| DEMING-LONG SA1 1H | Karnes County, TX | Dec 2025 | 5,877 BBLs | 62,447 MCF | Sep 2024 - Jan 2026 | 1 |
| DULLYE 01 | Karnes County, TX | Dec 2025 | 14,796 BBLs | 141,411 MCF | Nov 2010 - Jan 2026 | 8 |
| EASLEY UNIT | Karnes County, TX | Dec 2025 | 13,683 BBLs | 235,400 MCF | May 2010 - Jan 2026 | 12 |
| EGBERT UNIT | Karnes County, TX | Dec 2025 | 6,614 BBLs | 10,397 MCF | Apr 2012 - Jan 2026 | 7 |
| ELIZONDO 01 0 | Karnes County, TX | Dec 2025 | 47,294 BBLs | 239,600 MCF | Jul 2025 - Jan 2026 | 9 |
| FELIX UNIT | Karnes County, TX | Dec 2025 | 70,738 BBLs | 58,941 MCF | Dec 2025 - Jan 2026 | 8 |
| FELIX-SMITH MELLICK SA 1H | Karnes County, TX | Dec 2025 | 11,176 BBLs | 10,671 MCF | Dec 2025 - Jan 2026 | 1 |
| FORISTER 541 | Karnes County, TX | Dec 2025 | 13,512 BBLs | 19,245 MCF | Dec 2011 - Jan 2026 | 12 |
| FOSTER UNIT | Karnes County, TX | Dec 2025 | 6,325 BBLs | 54,349 MCF | Apr 2011 - Jan 2026 | 22 |
| FRANK MALEK 0 | Live Oak County, TX | Dec 2025 | 13,076 BBLs | 241,860 MCF | Sep 2012 - Jan 2026 | 19 |
| FRANKE JOHNSON | Karnes County, TX | Dec 2025 | 6,233 BBLs | 71,621 MCF | Jun 2012 - Jan 2026 | 17 |
| FRANKE UNIT | Karnes County, TX | Dec 2025 | 15,065 BBLs | 77,169 MCF | Dec 2010 - Jan 2026 | 24 |
| FRANSEN UNIT | Karnes County, TX | Dec 2025 | 8,343 BBLs | 21,136 MCF | Aug 2025 - Jan 2026 | 7 |
| FRANSEN-DIRECT ASSETS SA | Karnes County, TX | Dec 2025 | 19,116 BBLs | 56,788 MCF | Aug 2025 - Jan 2026 | 2 |
| GUAJILLO | Live Oak County, TX | Dec 2025 | 24,363 BBLs | 44,953 MCF | Jun 2014 - Jan 2026 | 55 |
| GUAJILLO UNIT | Atascosa County, TX | Dec 2025 | 30,588 BBLs | 37,586 MCF | Jan 2015 - Jan 2026 | 71 |
| HALL-MANNING | Gonzales County, TX | Dec 2025 | 7,578 BBLs | 6,868 MCF | Sep 2014 - Jan 2026 | 7 |
| HANDY | Karnes County, TX | Dec 2025 | 5,934 BBLs | 24,216 MCF | Apr 2010 - Jan 2026 | 14 |
| HEMBY UNIT | Karnes County, TX | Dec 2025 | 6,803 BBLs | 52,731 MCF | Aug 2012 - Jan 2026 | 19 |
| HIERHOLZER RETZLOFF | Atascosa County, TX | Dec 2025 | 35,795 BBLs | 69,131 MCF | Jun 2011 - Jan 2026 | 4 |
| HOLLAND OPIELA | Karnes County, TX | Dec 2025 | 7,406 BBLs | 14,467 MCF | Dec 2011 - Jan 2026 | 6 |
| HOLLMAN | Karnes County, TX | Dec 2025 | 6,548 BBLs | 31,891 MCF | Mar 2011 - Jan 2026 | 22 |
| HONS RAFTER UNIT | Karnes County, TX | Dec 2025 | 11,661 BBLs | 10,955 MCF | Jun 2013 - Jan 2026 | 5 |
| HOPE-BRUNS SA1 1H | DeWitt County, TX | Dec 2025 | 5,979 BBLs | 47,024 MCF | Jun 2024 - Jan 2026 | 1 |
| JANSSEN - OETKEN 01 | Karnes County, TX | Dec 2025 | 4,248 BBLs | 65,895 MCF | Apr 2023 - Jan 2026 | 5 |
| JAUER-SONKA UNIT | Karnes County, TX | Dec 2025 | 7,972 BBLs | 6,296 MCF | Jul 2013 - Jan 2026 | 9 |
| JOHNSON-TSCHIRHART UNIT | Karnes County, TX | Dec 2025 | 53,101 BBLs | 523,231 MCF | Oct 2025 - Jan 2026 | 6 |
| JULIE BECK | Live Oak County, TX | Dec 2025 | 7,351 BBLs | 30,564 MCF | Nov 2010 - Jan 2026 | 17 |
| KARNES CITY N | Karnes County, TX | Dec 2025 | 11,775 BBLs | 16,463 MCF | Apr 2014 - Jan 2026 | 13 |
| KELLNER-JONAS | Live Oak County, TX | Dec 2025 | 15,291 BBLs | 36,395 MCF | Jun 2011 - Jan 2026 | 8 |
| KIRK 01 | Karnes County, TX | Dec 2025 | 27,344 BBLs | 280,453 MCF | Apr 2011 - Jan 2026 | 14 |
| KIRK-LONG SA | Karnes County, TX | Dec 2025 | 10,110 BBLs | 84,034 MCF | Feb 2025 - Jan 2026 | 2 |
| KOOPMAN | DeWitt County, TX | Dec 2025 | 17,851 BBLs | 221,911 MCF | Jun 2011 - Jan 2026 | 7 |
| L.B. HAILEY-DAVILA | Karnes County, TX | Dec 2025 | 7,836 BBLs | 71,857 MCF | Apr 2024 - Jan 2026 | 2 |
| LESKE-JUDD-MOTL SA D | DeWitt County, TX | Dec 2025 | 5,847 BBLs | 32,552 MCF | Oct 2024 - Jan 2026 | 1 |
| LESKE-MOTL SA | DeWitt County, TX | Dec 2025 | 11,245 BBLs | 83,052 MCF | Oct 2024 - Jan 2026 | 3 |
| LISKA-ELIZONDO SA1 1H | Karnes County, TX | Dec 2025 | 8,726 BBLs | 43,164 MCF | Sep 2024 - Jan 2026 | 1 |
| LIVE OAK PARTNERS 0 | Live Oak County, TX | Dec 2025 | 4,631 BBLs | 53,034 MCF | May 2013 - Jan 2026 | 6 |
| MAUCH TOM KRUEGER | Atascosa County, TX | Dec 2025 | 6,360 BBLs | 13,936 MCF | Apr 2023 - Jan 2026 | 2 |
| MAURER-MCFARLAND UNIT | Karnes County, TX | Dec 2025 | 6,627 BBLs | 22,335 MCF | Dec 2012 - Jan 2026 | 7 |
| MAY UNIT 1 | Karnes County, TX | Dec 2025 | 8,605 BBLs | 30,449 MCF | Nov 2010 - Jan 2026 | 14 |
| MAY-RYAN ABC-ATLAS SA | Karnes County, TX | Dec 2025 | 7,014 BBLs | 7,638 MCF | Feb 2024 - Jan 2026 | 1 |
| MAY-RYAN UNIT | Karnes County, TX | Dec 2025 | 11,705 BBLs | 13,999 MCF | Feb 2012 - Jan 2026 | 11 |
| MCCOY EGBERT | Karnes County, TX | Dec 2025 | 6,651 BBLs | 11,948 MCF | Jan 2013 - Jan 2026 | 7 |
| MCS FOUNDATION | Atascosa County, TX | Dec 2025 | 43,976 BBLs | 50,496 MCF | Jul 2025 - Jan 2026 | 4 |
| MEDINA-HOFFMAN | Karnes County, TX | Dec 2025 | 9,086 BBLs | 10,704 MCF | Apr 2012 - Jan 2026 | 7 |
| MEDINA-JONAS | Karnes County, TX | Dec 2025 | 11,050 BBLs | 15,576 MCF | Feb 2012 - Jan 2026 | 18 |
| MIKKELSON-WITTE | Karnes County, TX | Dec 2025 | 6,548 BBLs | 6,421 MCF | Mar 2012 - Jan 2026 | 7 |
| MILLER RIDOUT | Karnes County, TX | Dec 2025 | 29,180 BBLs | 68,844 MCF | Sep 2025 - Jan 2026 | 8 |
| MOBIL UNIT | Karnes County, TX | Dec 2025 | 8,433 BBLs | 56,585 MCF | Nov 2012 - Jan 2026 | 32 |
| MOHR-HONS UNIT | Karnes County, TX | Dec 2025 | 6,658 BBLs | 8,990 MCF | May 2012 - Jan 2026 | 8 |
| OLSON ESSE-KENNEDY SA | Karnes County, TX | Dec 2025 | 7,258 BBLs | 103,500 MCF | May 2024 - Jan 2026 | 2 |
| OLSON-ESSE UNIT | Karnes County, TX | Dec 2025 | 4,584 BBLs | 92,309 MCF | May 2012 - Jan 2026 | 4 |
| PATINO UNIT | Karnes County, TX | Dec 2025 | 13,056 BBLs | 142,579 MCF | Oct 2010 - Jan 2026 | 3 |
| PATINO-FRANKE UNIT SA1 1H | Karnes County, TX | Dec 2025 | 5,887 BBLs | 69,515 MCF | Feb 2025 - Jan 2026 | 1 |
| PFEIFER-SCHEELE HUTH UNIT A SA | Karnes County, TX | Dec 2025 | 13,347 BBLs | 25,031 MCF | Jan 2025 - Jan 2026 | 4 |
| R MAY A-MAY GIRLS CHAPMAN SA2 | Atascosa County, TX | Dec 2025 | 17,815 BBLs | 30,352 MCF | Jun 2025 - Jan 2026 | 1 |
| R MAY A-SCHROEDER CHAPMAN SA1 | Atascosa County, TX | Dec 2025 | 18,364 BBLs | 32,681 MCF | Jun 2025 - Jan 2026 | 1 |
| R. MAY | Atascosa County, TX | Dec 2025 | 18,689 BBLs | 18,209 MCF | Jun 2012 - Jan 2026 | 42 |
| RANCHO GRANDE TRUST | Karnes County, TX | Dec 2025 | 7,024 BBLs | 26,065 MCF | Jun 2010 - Jan 2026 | 13 |
| RETZLOFF-MAY | Atascosa County, TX | Dec 2025 | 8,856 BBLs | 10,604 MCF | Oct 2011 - Jan 2026 | 2 |
| REYNOLDS | Karnes County, TX | Dec 2025 | 32,084 BBLs | 108,659 MCF | May 2011 - Jan 2026 | 17 |
| RIDLEY | Karnes County, TX | Dec 2025 | 52,505 BBLs | 297,477 MCF | Jul 2011 - Jan 2026 | 30 |
| RIPPSTEIN-HONS RAFTER SA | Karnes County, TX | Dec 2025 | 15,444 BBLs | 28,805 MCF | Aug 2024 - Jan 2026 | 2 |
| SAN CHRISTOVAL | Live Oak County, TX | Dec 2025 | 148,976 BBLs | 633,336 MCF | Sep 2011 - Jan 2026 | 70 |
| SCHENDEL | Karnes County, TX | Dec 2025 | 12,802 BBLs | 56,154 MCF | Oct 2010 - Jan 2026 | 27 |
| SMITH-MELLICK | Karnes County, TX | Dec 2025 | 10,701 BBLs | 12,499 MCF | Dec 2011 - Jan 2026 | 6 |
| STEWART-GIESE | Atascosa County, TX | Dec 2025 | 17,066 BBLs | 24,474 MCF | Nov 2011 - Jan 2026 | 4 |
| STRAUBE 01 | DeWitt County, TX | Dec 2025 | 4,904 BBLs | 97,247 MCF | Apr 2011 - Jan 2026 | 11 |
| SWIZE MCFARLAND UNIT | Karnes County, TX | Dec 2025 | 8,036 BBLs | 16,183 MCF | Dec 2012 - Jan 2026 | 5 |
| TIPTON-JONAS UNIT | Karnes County, TX | Dec 2025 | 9,210 BBLs | 13,550 MCF | May 2012 - Jan 2026 | 7 |
| TOM-SMITH UNIT | Atascosa County, TX | Dec 2025 | 21,200 BBLs | 16,478 MCF | May 2021 - Jan 2026 | 12 |
| TURNBULL | Karnes County, TX | Dec 2025 | 29,043 BBLs | 83,644 MCF | Jun 2010 - Jan 2026 | 51 |
| WARNER | Karnes County, TX | Dec 2025 | 9,487 BBLs | 48,356 MCF | Apr 2012 - Jan 2026 | 15 |
| WESSENDORFF | Karnes County, TX | Dec 2025 | 16,402 BBLs | 225,179 MCF | Apr 2006 - Jan 2026 | 29 |
| WINGNUT UNIT | Karnes County, TX | Dec 2025 | 7,650 BBLs | 10,519 MCF | Jan 2013 - Jan 2026 | 18 |
| YOSKO BORGFELD | Karnes County, TX | Dec 2025 | 7,362 BBLs | 14,201 MCF | Aug 2011 - Jan 2026 | 5 |
| Well Name | County | API # | Submitted | Approved | Type | Drill | Well | Status | Proposed Depth |
|---|---|---|---|---|---|---|---|---|---|
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These are the contact records we have for Marathon Oil Ef LLC. They are obtained from the state and county goverment agency where we obtain our data.
| Address | Phone # |
|---|---|
| 990 TOWN AND COUNTRY BLVD, HOUSTON, TX 77024-2217 | |
| PO BOX 2197 REGULATORY DEPT HOUSTON, TX 77252 | (832) 486-2737 |