Marathon Oil

What Marathon Oil does

Marathon Oil Corporation was an independent, publicly traded exploration and production (E&P) company headquartered in Houston, Texas, with operations dating to the 1887 founding of its predecessor and a 2000 corporate reorganization as a standalone entity spun off from USX-Marathon Group. The company's core business was upstream oil and natural gas production from major U.S. unconventional resource plays — primarily the Eagle Ford shale in South Texas, the Bakken shale in North Dakota, and the Anadarko Basin in Oklahoma — with crude oil and natural gas as its sole products.

Marathon generated revenue by producing hydrocarbons from its acreage and selling them into commodity markets at WTI/Brent-indexed prices, with no fixed pricing tiers disclosed. Distribution ran through company-operated pipelines and terminals (including a Central Ohio terminal) to refineries and energy traders, supplemented by a California retail gas station footprint of more than 1,700 stations. The company pursued a horizontal-basin-consolidation strategy, executing the $888 million PayRock Energy acquisition in 2016 and the $3.0 billion Ensign Natural Resources Eagle Ford acquisition in November 2022 to expand scale within core basins.

In November 2024 ConocoPhillips completed a $22.5 billion all-stock acquisition of Marathon Oil, delisting the company (it was replaced in the S&P 500 by Texas Pacific Land Corp. on November 26, 2024) and integrating Marathon's Eagle Ford and Bakken assets into its own portfolio. Post-deal ConocoPhillips announced over $1 billion in run-rate synergies and a 20–25% workforce reduction concentrated in 2025. Marathon Oil now operates as a wholly-owned subsidiary of ConocoPhillips.

Name

Marathon Oil

Legal name

Marathon Oil Corporation

Website

https://marathonoil.com

Company type

Public

Founded year

2000

Operating status

Acquired

Headcount range

1,001–5,000 employees

Short description

Marathon Oil Corporation was an independent U.S. upstream oil and gas producer operating primarily in the Eagle Ford, Bakken, and Anadarko Basin shale plays, selling crude and natural gas to refineries and traders via pipelines, terminals, and California retail stations until its November 2024 acquisition by ConocoPhillips for $22.5 billion.

Ownership category

akta.pro rank

Product category

Upstream Oil and Gas Exploration and Production

NAICS

Oil and Gas Extraction (2111), Crude Petroleum Extraction (21112), Natural Gas Extraction (21113)

SIC

Crude Petroleum & Natural Gas (1311), Drilling Oil & Gas Wells (1381)

akta.pro primary industry

Unconventional Resources Development (Shale/Tight, CBM) (EUALAAAH)

akta.pro secondary industries

Unconventional Gas E&P (Shale/Tight Gas) (EUAAAAAC), Drilling & Well Construction (E&P Operator-led) (EUALAAAD)

Keywords

• Oil and gas exploration
• Crude oil production
• Natural gas production
• Unconventional resource development
• Upstream energy operations

Headquarters

HQ city

Houston

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Supply Chain, Personnel, Infrastructure, Technology or R&D, Marketing or Sales

Distribution channels2 records

Core offering

Marathon Oil is an independent international energy company engaged in the exploration, development, production, and marketing of crude oil, natural gas, and natural gas liquids (NGLs). Its operations are concentrated in three key U.S. unconventional resource plays: the Eagle Ford shale in South Texas, the Bakken formation in North Dakota, and the Anadarko Basin in Oklahoma. The company applies horizontal drilling and hydraulic fracturing to develop liquids-rich production and sells its hydrocarbons to downstream buyers under commodity-linked contracts.

Product overview

Marathon Oil was an independent oil and gas exploration and production (E&P) company. The company's primary products were crude oil and natural gas produced from its upstream operations across major U.S. shale basins, including the Eagle Ford Shale in Texas, the Bakken Shale in North Dakota, and the Anadarko Basin in Oklahoma. Marathon Oil was acquired by ConocoPhillips in late 2024 for approximately $22.5 billion. As an E&P company, Marathon Oil did not offer a software platform, SaaS products, or technology products with modular architectures—it produced and sold hydrocarbon commodities extracted from its asset portfolio.

Differentiator

Problem solved

Functional benefit

Products and services

• Crude Oil Production Production and sale of crude oil (including light sweet crude and condensate) from Marathon Oil's U.S. unconventional assets in the Eagle Ford, Bakken, and Anadarko Basin. Sold to refineries, crude marketers, and integrated oil companies under benchmark-indexed contracts.
• Natural Gas Production Production and sale of associated and non-associated natural gas from the Eagle Ford, Bakken, and Anadarko Basin assets. Sold to midstream gathering and processing companies, gas utilities, and marketers under Henry Hub-indexed pricing arrangements.
• Natural Gas Liquids (NGLs) Production Production and sale of natural gas liquids (ethane, propane, butane, and natural gasoline) extracted from associated gas streams at Marathon Oil's U.S. unconventional operations. Sold to NGL fractionators and petrochemical/purchasers under NGL benchmark-indexed contracts.
• Eagle Ford Asset Operations Upstream exploration and production operations in the Eagle Ford shale in South Texas, producing crude oil, natural gas, and NGLs. Asset base was expanded through the 2022 Ensign acquisition, doubling Marathon Oil's Eagle Ford position.
• Bakken Asset Operations Upstream exploration and production operations in the Bakken formation in North Dakota, primarily producing light sweet crude oil with associated natural gas. Operated by Marathon Oil as part of its core U.S. unconventional portfolio.
• Anadarko Basin Asset Operations Upstream exploration and production operations in the Anadarko Basin in Oklahoma, producing crude oil, natural gas, and NGLs from unconventional reservoirs. Operated by Marathon Oil as part of its three-basin U.S. unconventional footprint.

Quantifiable outcome

• Acquisition was projected to be immediately accretive to financial metrics and expand basin scale

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Ensign Natural ResourcesmajorStrategic or Co-development Partner · 2 November 2022Marathon Oil entered into a definitive purchase agreement to acquire the Eagle Ford assets of Ensign Natural Resources for $3.0 billion, with closing expected by end of 2022. The acquisition was projected to be immediately accretive to financial metrics and expand the company's basin scale.

Scale indicators5 records

Recent moves7 records

Expansion highlights3 records

Direct peers

• Coterra Energy: Coterra Energy is a U.S. independent E&P with operations across the Marcellus, Permian, and Anadarko basins — the Anadarko overlap makes it a direct operational peer to Marathon's portfolio.
• Continental Resources: Continental Resources is a major U.S. independent E&P with core operations in the Bakken shale — directly overlapping with one of Marathon's key basins — and a similar unconventional resource focus.
• EOG Resources: EOG Resources is one of the largest U.S. independent E&P companies with operations concentrated in the Eagle Ford and other major U.S. shale basins, making it the closest direct comparable to Marathon Oil's domestic shale asset base.
• Diamondback Energy: Diamondback Energy is a U.S. independent E&P concentrated in the Permian Basin, sharing Marathon's pure-play domestic shale model and a similar focus on operational efficiency and free cash flow generation.
• Pioneer Natural Resources: Pioneer Natural Resources was a leading U.S. independent E&P focused on the Permian Basin shale play; it was acquired by ExxonMobil in 2024, providing a directly comparable strategic takeout benchmark to Marathon's acquisition by ConocoPhillips.
• Range Resources: Range Resources is a U.S. independent E&P focused on natural gas and NGL production from the Marcellus and Utica shales, sharing Marathon's unconventional resource development business model in U.S. shale plays.
• Hess Corporation: Hess Corporation is an independent E&P with significant U.S. shale operations including the Bakken, plus international assets, providing a comparable publicly traded E&P profile prior to its acquisition by Chevron.
• Devon Energy: Devon Energy is a U.S. independent E&P with significant operations in the Eagle Ford and Bakken shale plays, directly overlapping Marathon's core acreage and offering a comparable U.S. shale-focused business model.

Broad incumbents

• ConocoPhillips: ConocoPhillips is the largest U.S. independent E&P and Marathon Oil's parent company post-2024 acquisition; it operates globally across upstream, LNG, and midstream and represents the broader incumbent that absorbed Marathon's portfolio.
• Occidental Petroleum: Occidental Petroleum is a diversified U.S. energy company with major E&P operations in the Permian Basin and integrated downstream/chemicals businesses, providing a comparable scale U.S. incumbent E&P peer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/marathonoil
• LinkedInlinkedin.com/company/marathon-oil-corporation

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A4 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Marathon Oil