ONEOK Pays $4.425 Billion for Brazos Midstream Permian Assets in Cash-and-Equity Deal

ONEOK closed a $4.425 billion acquisition of Brazos Midstream's Permian Midland Basin infrastructure Tuesday, paying $3.925 billion in cash and $500 million in equity. The deal adds 1,500 miles of natural gas gathering pipeline, 550 million cubic feet per day of processing capacity, and 200,000 barrels per day of crude handling capacity to ONEOK's Permian footprint. Brazos Midstream, backed by EnCap Flatrock Midstream since 2017, built the system around anchor customers in Howard, Martin, and Midland counties. ONEOK now controls both gathering and processing across a contiguous 850,000-acre dedication.

The transaction closes a three-year buildout cycle for Brazos and marks ONEOK's fourth Permian acquisition since 2021. The company paid 9.2x trailing EBITDA based on Brazos's estimated $480 million in 2024 adjusted cash flow. ONEOK funded the cash portion with a combination of term loan facilities and a $1.5 billion bond offering priced in late March at yields ranging from 5.15% to 5.65% across three tranches. The equity consideration will be issued as 11.2 million ONEOK shares at a reference price of $44.64, a 3.8% discount to the ten-day volume-weighted average preceding the announcement. The deal is immediately accretive to distributable cash flow and increases ONEOK's Permian processing capacity by 22%.

The move matters because ONEOK is now the second-largest midstream operator in the Midland Basin, behind only Enterprise Products Partners. The Brazos system is 95% fee-based with average contract durations of eight years, insulating ONEOK from commodity price swings while locking in volume commitments from producers including Diamondback Energy, Endeavor Energy, and private operators backed by Kayne Anderson and Quantum Energy Partners. Natural gas production in the Permian is expected to grow 6% annually through 2027 according to Rystad Energy, but processing capacity additions have lagged by 18 months due to permitting delays and equipment lead times. ONEOK's expanded footprint positions it to capture incremental volumes as producers shift drilling activity toward gas-rich acreage in response to LNG export demand and associated gas flaring penalties that take effect in Texas in January 2025.

The Brazos assets also include 340 miles of residue gas pipeline connecting to ONEOK's existing Gulf Coast Express and Roadrunner systems, which flow to Agua Dulce and ultimately to Corpus Christi LNG export terminals. This integration is material. ONEOK can now move molecules from wellhead to tidewater within its own network, reducing transportation costs by an estimated $0.18 per MMBtu and improving margin capture across the value chain. The company separately disclosed plans to add 200 MMcf/d of incremental processing capacity at the Brazos plants by Q3 2025, a $220 million capital project that is 72% pre-subscribed under binding contracts. These expansions carry mid-teens unlevered returns and require no additional right-of-way acquisitions.

Operators should watch ONEOK's Q2 earnings call in early August for updated Permian volume guidance and any discussion of further tuck-in acquisitions. The company has $2.1 billion in remaining capacity under its revolver and has signaled willingness to deploy another $1 billion in M&A by year-end if assets meet return thresholds. Also watch for contract renegotiations on legacy Brazos agreements expiring in 2026; ONEOK typically pushes for minimum volume commitments and inflation escalators during renewals. Finally, monitor Texas Railroad Commission flaring data for Howard and Martin counties through summer—any uptick in flaring would indicate processing bottlenecks that ONEOK's expanded capacity is designed to alleviate.

EnCap Flatrock Midstream exits with a 2.8x gross multiple after seven years, a respectable but not exceptional return that reflects the capital intensity of Permian midstream and the premium ONEOK paid for operating scale. The next Permian midstream sale of comparable size is likely 18 months out.