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Old Ironsides, EnCap Flatrock’s Brazos seals $4.4bn Midland asset sale to ONEOK

Reported by Pehub
Oct 7, 2026· 1 min read
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Key Takeaways
  • • Old Ironsides and EnCap Flatrock's Brazos entity completed a $4.4 billion asset sale of a Midland Basin natural gas gathering and processing system to ONEOK.
  • • The divested infrastructure comprises approximately 700 miles of pipeline and 1.1 billion cubic feet per day of processing capacity in the Midland Basin.
  • • The transaction represents a significant consolidation of midstream assets in the Permian Basin's core producing region.
Summary
Old Ironsides and EnCap Flatrock's Brazos entity have sealed a $4.4 billion sale of their Midland Basin natural gas gathering and processing system to ONEOK, marking a major midstream asset transaction in the Permian Basin. The divested infrastructure includes approximately 700 miles of pipeline infrastructure and 1.1 billion cubic feet per day of processing capacity, positioning ONEOK to expand its footprint in one of North America's most prolific natural gas regions.

The Midland Basin represents a critical node in the Permian's integrated midstream network, and the asset base being acquired by ONEOK encompasses substantial gathering and processing operations. The transaction underscores continued consolidation among midstream operators as they seek to optimize asset utilization and capture synergies in high-volume producing basins. For ONEOK, the acquisition adds meaningful scale to its existing Permian operations and provides direct access to the growing natural gas production flowing from the Midland sub-basin.

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Pehub Old Ironsides, EnCap Flatrock’s Brazos seals $4.4bn Midland asset sale to ONEOK