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MARATHON OIL EF LLC: wells in Texas

2,957wells on record
2,484active
449shut in or idle
24plugged
7disposal / injection

All of this operator's wells, every state, one download →

Where they operate

County	Active	Wells
Karnes	1,492	1,777
Atascosa	431	505
Live Oak	299	358
De Witt	219	261
Mcmullen	32	37
Bee	11	11
Gonzales	0	6
Wilson	0	2

Wells

Not plugged · All wells · Plugged · Orphaned

Well	API / ID	Status	Type
CARTER-HOLM UNIT 9H	42-255-34200	Active	Oil
CARTER-HOLM UNIT 7H	42-255-34178	Active	Oil
CARTER-HOLM UNIT 506H	42-255-34177	Active	Oil
CARTER-HOLM UNIT 3H	42-255-33979	Shut in	Oil
CARTER-HOLM UNIT 2H	42-255-33978	Active	Oil
CARTER-HOLM UNIT 4H	42-255-33980	Active	Oil
CARTER-HOLM UNIT 5H	42-255-33981	Active	Oil
CARTER-HOLM UNIT 1H	42-255-32364	Active	Oil
CARTER-HOLM UNIT 508H	42-255-34179	Active	Oil
CARTER-HOLM-YANTA SA 1H	42-255-36962	Active	Oil
CARTER-SALGE-EGBERT-MILLER PSA 1H	42-255-35700	Shut in	Oil
CAT-KENEDY SWD 1	42-255-32604	Active	Injection
CAT-KENEDY SWD 1	42-255-32604	Active	Injection
CHALLENGER AC UNIT A 2H	42-255-37158	Active	Oil
CHALLENGER AC UNIT A 4H	42-255-37159	Active	Oil
CHALLENGER UNIT A 2H	42-255-32965	Active	Oil
CHALLENGER UNIT A 4H	42-255-33419	Active	Oil
CHALLENGER UNIT A 9H	42-255-33665	Active	Oil
CHALLENGER UNIT A 11H	42-255-33667	Active	Oil
CHALLENGER UNIT A 5H	42-255-33420	Active	Oil
CHALLENGER UNIT A 7H	42-255-33663	Active	Oil
CHALLENGER UNIT A 1H	42-255-32964	Active	Oil
CHALLENGER UNIT A 10H	42-255-33666	Active	Oil
CHALLENGER UNIT A 3H	42-255-33418	Active	Oil
CHALLENGER UNIT A 8H	42-255-33664	Shut in	Oil
CHALLENGER UNIT A 6H	42-255-33421	Active	Oil
CHALLENGER UNIT B 7H	42-255-33286	Active	Oil
CHALLENGER UNIT B 6H	42-255-33368	Active	Oil
CHALLENGER UNIT B 1H	42-255-32882	Active	Oil
CHALLENGER UNIT B 4H	42-255-33366	Active	Oil
CHALLENGER UNIT B 3H	42-255-33364	Active	Oil
CHALLENGER UNIT B 5H	42-255-33367	Active	Oil
CHALLENGER UNIT B 2H	42-255-32966	Shut in	Oil
CHALLENGER UNIT B 9H	42-255-33288	Shut in	Oil
CHALLENGER UNIT B 8H	42-255-33287	Active	Oil
CHALLENGER UNIT B AC 2H	42-255-35863	Active	Oil
CHALLENGER UNIT B AC 1H	42-255-35862	Active	Oil
CHALLENGER UNIT B-A AC SA 1H	42-255-37160	Active	Oil
CHALLENGER UNIT C 1H	42-255-32830	Shut in	Oil
CHALLENGER UNIT C 12H	42-255-34337	Active	Oil
CHALLENGER UNIT C 9H	42-255-34333	Active	Oil
CHALLENGER UNIT C 5H	42-255-35201	Active	Oil
CHALLENGER UNIT C 3H	42-255-35199	Active	Oil
CHALLENGER UNIT C 4H	42-255-35200	Active	Oil
CHALLENGER UNIT C 5H	42-255-35201	Active	Unknown
CHALLENGER UNIT C 6H	42-255-35202	Active	Oil
CHALLENGER UNIT C 11H	42-255-34336	Active	Oil
CHALLENGER UNIT C 10H	42-255-34334	Active	Oil
CHALLENGER UNIT C 2H	42-255-35198	Active	Oil
CHALLENGER UNIT C AC 3H	42-255-36039	Active	Oil
CHALLENGER UNIT C AC 2H	42-255-35197	Active	Oil
CHALLENGER UNIT C AC 1H	42-255-35196	Active	Oil
CHALLENGER UNIT C-B SA 1H	42-255-36943	Active	Oil
CHAPMAN HUMMEL-CARPENTER SA1 1H	42-255-38030	Active	Oil
CHAPMAN PFEIL AC PSA 1H	42-013-35642	Shut in	Oil
CHAPMAN PFEIL UNIT 3H	42-013-35135	Shut in	Oil
CHAPMAN PFEIL UNIT 1H	42-013-34339	Active	Oil
CHAPMAN PFEIL UNIT 2H	42-013-35134	Shut in	Oil
CHAPMAN ROGERS-FRANKE SA 1H	42-255-37631	Temporarily abandoned	Oil & gas
CHAPMAN ROTHE UNIT 5H	42-013-35419	Active	Oil
CHAPMAN ROTHE UNIT 6H	42-013-35420	Active	Oil
CHAPMAN ROTHE UNIT 7H	42-013-35421	Active	Oil
CHAPMAN ROTHE UNIT 1H	42-013-34338	Temporarily abandoned	Oil & gas
CHAPMAN ROTHE UNIT 2H	42-013-35411	Active	Oil
CHAPMAN ROTHE UNIT 3H	42-013-35412	Active	Oil
CHAPMAN-FRANKE-MURPHY-KOTARA SA 1H	42-255-37630	Active	Gas
CHAPMAN-HUMMEL UNIT 2H	42-255-38031	Active	Oil
CHAPMAN-HUMMEL UNIT 3H	42-255-38032	Active	Oil
CHAPMAN-HUMMEL UNIT 4H	42-255-38033	Active	Oil
CHAPMAN-HUMMEL UNIT 1H	42-255-32733	Active	Oil
CHAPMAN-PFEIL 1H PSA 1H	42-013-35628	Active	Oil
CHAPMAN-PFEIL 2H PSA 2H	42-013-35627	Active	Oil
CHAPMAN-PFEIL 4H PSA 4H	42-013-35630	Active	Oil
CHAPMAN-PFEIL ALLOCATION 3H	42-013-35136	Shut in	Oil
CHAPMAN-ROGERS UNIT 302H	42-255-34571	Active	Oil
CHAPMAN-ROGERS UNIT 502H	42-255-34573	Shut in	Oil
CHAPMAN-ROGERS UNIT 4H	42-255-34572	Active	Oil
CHAPMAN-ROGERS UNIT 301H	42-255-34574	Shut in	Oil
CHAPMAN-ROGERS UNIT 3H	42-255-33224	Active	Oil
CHAPMAN-ROGERS UNIT 501H	42-255-34575	Active	Oil
CHAPMAN-ROGERS UNIT 1H	42-255-31960	Active	Oil
CHAPMAN-ROGERS UNIT 2H	42-255-33223	Active	Oil
CHARLES RIEDESEL 01 3	42-123-32947	Active	Gas
CHARLES RIEDESEL 01 1	42-123-32295	Active	Gas
CHARLES RIEDESEL 01 2	42-123-32945	Active	Gas
CHESNUTT 01 01H	42-255-31645	Active	Gas
CHESNUTT 02 01H	42-255-31673	Active	Gas
CHILDREN S WESTON UNIT 2H	42-255-33275	Active	Gas
CHILDREN S WESTON UNIT 3H	42-255-33309	Active	Gas
CHILDREN S WESTON UNIT 1HR	42-255-32390	Active	Oil & gas
CHILDREN S-WESTON UNIT 503H	42-255-34850	Active	Gas
CHILDREN S-WESTON UNIT 11H	42-255-34849	Active	Oil & gas
CHILDREN S-WESTON UNIT 504H	42-255-34848	Active	Oil & gas
CHILDREN S-WESTON UNIT 12H	42-255-34268	Active	Oil
CHILDREN S-WESTON UNIT 510H	42-255-34269	Active	Oil
CHILDREN S-WESTON UNIT 13H	42-255-34270	Shut in	Oil
CHILDREN S-WESTON UNIT 7H	42-255-34053	Active	Oil
CHILDREN S-WESTON UNIT 6H	42-255-34058	Active	Oil
CHILDREN S-WESTON UNIT 8H	42-255-34060	Active	Oil
CHILDREN S-WESTON UNIT 5H	42-255-34059	Temporarily abandoned	Oil & gas

Operator names are shown as each state records them. Data as of 2026-10-17.