ONEOK Pays $4.425 Billion Cash for Brazos Midstream's Permian Midland Assets

ONEOK bought Brazos Midstream's Permian Midland Basin assets for $4.425 billion in cash, marking the company's largest single acquisition in three years and the third-largest midstream infrastructure deal closed in North America this year. The transaction brings ONEOK approximately 1.5 billion cubic feet per day of natural gas processing capacity, 220,000 barrels per day of NGL fractionation, and 500 miles of gathering and residue pipelines concentrated in Midland, Reagan, and Upton counties—the oil-wet core of the Permian where producer activity remains highest.

The purchase was announced without prior market speculation. ONEOK paid cash from existing balance sheet capacity and committed credit facilities, avoiding equity dilution. Management disclosed the transaction implies a 7.4x trailing twelve-month EBITDA multiple, in line with recent precedent trades for comparable gathering and processing systems in the Permian core. The assets generated approximately $600 million in EBITDA over the past year, serving primarily Tier 1 operators with long-term dedications averaging 7.2 years remaining.

This matters because ONEOK now controls the third-largest midstream footprint in the Midland Basin by throughput, behind only Targa Resources and EnLink Midstream. The acquired acreage sits directly adjacent to ONEOK's existing West Texas LPG and Roadrunner Gas Transmission systems, enabling immediate operational synergies management estimates at $85 million annually by the second year post-close. The company gains contracted exposure to incremental horizontal drilling by producers who have publicly guided to flat to 5 percent production growth in 2025 but have not yet finalized midstream commitments beyond current dedications. ONEOK effectively bought the residual value of future well connections at a discount to building greenfield capacity, which would require 18 to 24 months and expose the company to permitting delays and construction cost inflation.

The financing structure signals confidence in cash generation. ONEOK ended the prior quarter with $1.2 billion in cash and $3.5 billion of undrawn revolver capacity. Management indicated it will fund the transaction without accessing bond markets before the April close date, suggesting the company expects to maintain its current BBB credit rating without requiring an equity raise. The leverage ratio will rise temporarily to approximately 3.8x net debt to EBITDA but is expected to decline below 3.5x within twelve months through retained cash flow and the captured synergies.

Operators and allocators should watch ONEOK's April earnings call for updated full-year EBITDA guidance, which will reflect the first full quarter of combined operations and disclose whether any producer dedications are at risk of renegotiation. Permian rig counts and the pace of drilled-but-uncompleted well completions in Midland, Reagan, and Upton counties will determine how quickly the acquired system reaches nameplate capacity utilization. The company will likely face questions about additional tuck-in acquisitions in the Permian, given its new scale and the fragmented ownership of smaller gathering systems still held by private equity.

The transaction is expected to close in April, subject to customary regulatory approvals and Hart-Scott-Rodino clearance, with no financing contingency. ONEOK has not disclosed whether Brazos Midstream's private equity backers—Quantum Energy Partners and Kayne Anderson—will retain any residual interest or rollover equity, suggesting a full exit at a 2.9x gross multiple on their 2018 entry basis.