ConocoPhillips
A publicly traded U.S. independent producer with major positions in the Eagle Ford, Bakken, Permian, and Anadarko basins, deepened by recent acquisitions of Marathon Oil and Concho Resources.
Who ConocoPhillips is, and what they hold.
A publicly traded U.S. independent built through three major acquisitions over the past two decades, with a deep set of legacy names still visible on owner paperwork.
ConocoPhillips is a publicly traded U.S. independent oil and gas producer headquartered in Houston, Texas. The company was formed in 2002 from the merger of Conoco Inc. and Phillips Petroleum, and has since grown into one of the largest U.S. independents through a series of major acquisitions.
Within our 12-state footprint, ConocoPhillips holds substantial positions across the Eagle Ford in South Texas, the Bakken in North Dakota, the Permian Basin in Texas and New Mexico, and the Anadarko Basin in Oklahoma.
The company carries an unusually deep set of legacy operator names that mineral owners may still see on older paperwork. Burlington Resources, acquired in 2006, occasionally surfaces on Permian and Anadarko Basin paperwork. Concho Resources, acquired in 2021, was a major Permian operator. Marathon Oil, acquired in November 2024, brought sizable positions in the Eagle Ford and Bakken under the ConocoPhillips umbrella.
Send us what you have, and we will take a look.
Four basins, three legacy names you may still see.
ConocoPhillips's footprint reflects three major acquisitions of named operators. Each transaction left a long tail of legacy paperwork.
In the Eagle Ford, the former Marathon position concentrates in Karnes, Atascosa, and DeWitt counties in South Texas. In the Bakken, the Marathon legacy plus pre-merger Conoco holdings span Williams, McKenzie, Mountrail, and Dunn counties in North Dakota.
In the Permian, the former Concho acreage centers on the Delaware Basin in Lea, Eddy, and Reeves counties across New Mexico and Texas, with additional Midland Basin positions. In the Anadarko Basin, the former Marathon STACK acreage covers Kingfisher, Canadian, Blaine, and Dewey counties in Oklahoma.
Recent activity, andwhat is behind it.
Material events that affected ConocoPhillips's operating footprint and, by extension, mineral owners on its leased acreage.
- 2024Closed acquisition of Marathon Oil, adding Marathon's positions in the Eagle Ford, Bakken, and Anadarko. Source: ConocoPhillips press release, November 22, 2024.
- 2021Closed acquisition of Concho Resources, adding a substantial Permian Basin position. Source: ConocoPhillips press release, January 15, 2021.
- 2006Acquired Burlington Resources, adding the Burlington position across the San Juan Basin, Permian, and Anadarko. Source: ConocoPhillips historical filings.
Names that becameConocoPhillips.
If a division order or royalty statement shows one of these names, the operator of record on the well today is ConocoPhillips. The underlying interest carried over unchanged through each transaction.
2006
2021
2024
If your statements still say Marathon, Concho, or Burlington, we can trace it.
If you receive royalty checks from ConocoPhillips.
ConocoPhillips's three major acquisitions over the past two decades shape what mineral owners see on statements and where to look when verification is needed.
Receiving royalty checks from ConocoPhillips means you own a fractional interest in producing wells operated by ConocoPhillips. The company has grown substantially through three major acquisitions over the past two decades: Burlington Resources in 2006, Concho Resources in 2021, and Marathon Oil in 2024. Each transaction transferred operator of record on a meaningful number of wells, which means many royalty owners may still see one or more legacy names on their paperwork even though ConocoPhillips is the current operator.
ConocoPhillips operates across four basins in our footprint: the Eagle Ford in South Texas, formerly Marathon’s position; the Bakken in North Dakota, where the Marathon legacy joined an older Conoco position; the Permian Basin in Texas and New Mexico, centered on the former Concho acreage in the Delaware sub-basin; and the Anadarko Basin in Oklahoma, where the former Marathon STACK position is concentrated.
If your records still show Marathon Oil, Concho Resources, or Burlington Resources, the underlying mineral interest carried over to ConocoPhillips unchanged. Your royalty rate, your decimal interest, and the legal description on your division order all remain the same. What changed is the company administering the payment. Re-issuance of division orders happens gradually, and statements may continue to reference legacy names on property lines for years after a transaction closes.
If you have a question about a specific ConocoPhillips-paid interest, the operator’s owner relations channel handles account-level questions (decimal interest, statements, address changes, probate updates). The relevant state regulator’s well database confirms operator-of-record status by API number. We are happy to help you read what you have and identify what is missing if the multi-acquisition history makes the chain hard to follow.
Send us what you have. We can walk through it.
What peopleactually ask about ConocoPhillips.
We have walked through these conversations with mineral owners many times. Below are honest answers to the things people most often want to know.
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Send us what you have, or what you think you have. If your statements are from ConocoPhillips, or from a name they acquired, we can pull operator data, check decimal interest math, and put together a plain-English summary with our reasoning. If it makes sense to go further, we move on your timeline. If not, you have a free breakdown you can take anywhere.
For account-level questions (decimal interest, statements, address changes, probate updates): ConocoPhillips owner relations → · Investor relations and SEC filings →
Information about ConocoPhillips on this page is drawn from publicly available sources, including company press releases, SEC filings where applicable, state regulator data, and mainstream news reporting. It is current as of May 2026. Operator ownership, corporate structure, and active basins can change. Verify current status with the operator directly before making any decisions about a lease, division order, or sale.