Licensed to operate oil and gas wells in Texas. This is a free directory listing published by Berlin Royalties, not a page belonging to MARATHON OIL EF LLC. Here is how to reach them, and what to do if your royalty check is late, short, or has stopped arriving.
This is not MARATHON OIL EF LLC. You are on the website of Berlin Royalties, a mineral buyer in Tulsa.
We publish this operator directory as a free public reference. We have no affiliation with MARATHON OIL EF LLC, we do not work for them, and we cannot look up your account, your check, or your division order with them. To reach MARATHON OIL EF LLC, use their phone number in the card below.
Any phone number elsewhere on this page, including in the menu, the footer, and the bar at the bottom of your screen, rings Berlin Royalties. We are glad to hear from mineral owners, and if you want a second opinion on a royalty problem we will give you one free. We just cannot answer for MARATHON OIL EF LLC.
ConocoPhillips completed its acquisition of Marathon Oil Corporation on November 22, 2024. Royalty checks and division orders on wells Marathon Oil operated now generally come from ConocoPhillips. More here: who bought your operator: the running payor-change list.
This note is based on the information publicly available and may not cover every well or interest this operator held; some may not have transferred. Source: ConocoPhillips announcement, November 22, 2024. The payor name on your latest statement is the authority on who pays you now.
From state oil and gas regulator records. Operators change addresses and phone numbers more often than the records do, so verify anything that matters before relying on it.
MARATHON OIL EF LLC phone, from RRC records
(832) 486-2737
Address: PO BOX 2197 REGULATORY DEPT, Houston, TX 77252
RRC operator number: 525398
Licence status: Active
Source: Railroad Commission of Texas. Verify current details at the agency before relying on them.
Most royalty problems are administrative rather than geological, and most of them are fixable by you without paying anyone. In rough order of how often we see them:
Call MARATHON OIL EF LLC at the number above, not us, and ask for owner relations or the division order department. Have your owner number and the well or unit name ready. If you get nowhere, send us the statement and we will tell you what we can see, free, whether or not you ever sell anything to us.
Every state publishes its own operator records, and they are free to search. We list where to look for Texas on the well records page, along with production, permits and completion reports for twenty states.
You can also see every operator we have on file for Texas, or search the full operator directory.
We buy minerals and royalties in wells MARATHON OIL EF LLC operates, for our own account, and we show you the valuation math beside the offer. Fastest route: text a photo of your MARATHON OIL EF LLC check stub to 918-984-1645 and we will tell you what it says, whether the decimal is right, and what the interest is worth. Free either way. Or start here:
Operator records are compiled from state oil and gas regulators and normalized by Berlin Royalties, current as of 2026-08. Licence status reflects the agency's record at that date. Companies change names, addresses, phone numbers and ownership, and agency records lag. Verify anything that matters to your decision at the source. Berlin Royalties is a mineral buyer and a landman shop in Tulsa, not affiliated with MARATHON OIL EF LLC.