Marathon Oil lands in Eau Claire the week ConocoPhillips integration is complete

Marathon Oil flew from Thiessen Field in Wisconsin to Chippewa Valley Regional Airport in Eau Claire on May 15, a 40-minute hop in the Gulfstream V N540M. The flight arrived just after 6 p.m. local time.

The same week, ConocoPhillips confirmed it has completed the integration of Marathon Oil, per an April 18 report from EnergyPricesToday.com. The $16.5 billion acquisition, which closed in November 2024, has already generated more than $1 billion in annualized synergies, according to ConocoPhillips CEO Ryan Lance in a February earnings call covered by Oil & Gas Journal. Marathon Oil now operates as a ConocoPhillips subsidiary, and the combined company is targeting $2 billion in non-core asset sales over the next several years.

This trip fits a pattern of short hops across the Upper Midwest. In the days prior, N540M flew a loop from Saginaw, Michigan, through Akron, Ohio, and back to Wisconsin — likely visiting legacy Marathon Oil field offices or meeting with local operators in the Bakken and Eagle Ford regions, where the combined company holds deep inventory.