ONEOK pipeline operates approximately 50,000 miles of NGL, crude oil, and refined products infrastructure across North America — a network assembled in part through its $18.8 billion acquisition of Magellan Midstream Partners in September 2023, one of the largest midstream transactions in US history. That deal transformed ONEOK from a specialist NGL operator into one of the most diversified liquids pipeline companies on the continent.
Company Overview
ONEOK traces its roots to 1906 as Oklahoma Natural Gas, headquartered in Tulsa, Oklahoma. The company trades on the New York Stock Exchange under the ticker OKE and reported approximately $21.5 billion in revenue for FY2024 on a pro forma basis following the Magellan integration. CEO Pierce Norton II has led the company through its most significant period of expansion, repositioning ONEOK pipeline from a Mid-Continent NGL specialist into a multi-commodity infrastructure operator with coast-to-coast reach.
ONEOK’s core business spans gathering, processing, fractionation, and transportation of natural gas liquids, crude oil, and refined petroleum products. Its customer base includes producers, refiners, distributors, and export terminals across the US energy supply chain.
ONEOK Pipeline Network — NGL, Crude & Refined Products
Before the Magellan deal, the ONEOK pipeline portfolio was anchored in NGL — gathering raw mix from wellpads, processing it at gas plants, fractionating at facilities in Oklahoma and Kansas, and transporting purity products to petrochemical and export markets. Core operating regions included the Mid-Continent, Williston Basin (Bakken), Permian Basin, and Rocky Mountain systems.
The Elk Creek NGL pipeline — running from the Powder River Basin and Bakken to the ONEOK system in Kansas — remains one of its highest-growth assets, with capacity expansion underway to handle rising Permian and Williston NGL volumes projected through 2026 and beyond. ONEOK’s fractionation capacity at its Bushton, Kansas complex is among the largest in the Mid-Continent.
The Magellan Acquisition — How ONEOK Pipeline Became a Diversified Liquids Operator
The $18.8 billion acquisition of Magellan Midstream Partners, closed in September 2023, added the longest refined products pipeline system in the US — 9,800 miles of pipelines serving approximately one-third of US refining capacity, plus 54 terminals with roughly 100 million barrels of storage. Magellan’s network connected Gulf Coast refineries to Midwest and Southeast markets, a segment ONEOK previously had no presence in.
ONEOK also acquired Medallion Midstream, a Permian Basin crude gathering operator, as part of its broader growth programme. Medallion added significant Delaware and Midland Basin crude gathering infrastructure, deepening ONEOK’s exposure to the highest-production oil basin in the US. Together, these acquisitions shifted ONEOK pipeline’s commodity mix from NGL-dominant to a three-commodity portfolio spanning NGL, crude oil, and refined products.
2026 Strategy & Integration Progress
The Magellan integration has been ONEOK’s central operational focus since late 2023. Synergy targets from the deal were set at $200 million annually by the end of year two, driven by cost reductions, commercial optimisation across the combined network, and capital allocation efficiencies. Management has indicated progress tracking in line with those targets through 2025 reporting periods.
In the Permian Basin, ONEOK pipeline is investing in NGL volume growth as producer output continues to expand. The Elk Creek expansion and additional fractionation capacity remain multi-year capital commitments. Refined products throughput across the legacy Magellan network is supported by stable domestic fuel demand, with Gulf Coast crude export volumes providing additional upside exposure through the Seabrook Logistics joint venture.
ONEOK Pipeline in the North American Midstream Market
Post-Magellan, ONEOK pipeline competes directly with the largest midstream operators in North America. In NGL, its principal rivals are Enterprise Products Partners and Energy Transfer, both of which operate comparable fractionation and NGL transport capacity. In refined products, Magellan’s former network now competes with refined products pipelines operated by Buckeye and Colonial Pipeline.
ONEOK ranks among the top-tier operators in any objective assessment of the top US midstream companies by network scale. Its geographic diversification — from the Bakken to the Gulf Coast, and from the Permian to Midwest refineries — gives it exposure to virtually every major US producing and consuming region. According to ONEOK investor relations, the company’s distributable cash flow remains well-supported by long-term fee-based contracts across all three commodity segments.
Company Snapshot
| Headquarters | Tulsa, Oklahoma, USA |
|---|---|
| Founded | 1906 (as Oklahoma Natural Gas) |
| NYSE Ticker | OKE |
| CEO | Pierce Norton II |
| Total Pipeline Network | ~50,000 miles (post-Magellan) |
| Key Acquisition | Magellan Midstream Partners — $18.8bn (Sept 2023) |
| FY2024 Revenue (pro forma) | ~$21.5 billion |
| Primary Commodities | NGL, crude oil, refined petroleum products |
| Key Operating Regions | Mid-Continent, Permian Basin, Williston/Bakken, Rocky Mountain, Gulf Coast, Midwest refined products |
What did ONEOK acquire Magellan Midstream Partners for?
ONEOK acquired Magellan Midstream Partners for $18.8 billion in a deal that closed in September 2023. The acquisition added Magellan’s 9,800-mile refined products pipeline system — the longest in the US — along with 54 terminals and approximately 100 million barrels of storage capacity.
How many miles of pipeline does ONEOK operate?
ONEOK operates approximately 50,000 miles of pipeline across its combined network following the Magellan acquisition. This includes NGL gathering and transportation systems, crude oil pipelines via Medallion Midstream, and Magellan’s refined products network spanning the Midwest, Gulf Coast, and Southeast.
What commodities does ONEOK pipeline transport?
ONEOK pipeline transports natural gas liquids (NGL), crude oil, and refined petroleum products. Prior to the Magellan acquisition in 2023, ONEOK was primarily an NGL operator. The addition of Magellan’s refined products network and Medallion’s Permian crude assets diversified the commodity mix significantly.
Where does ONEOK operate?
ONEOK operates across the Mid-Continent, Permian Basin, Williston/Bakken, Rocky Mountain, and Gulf Coast regions for NGL and crude, and through the legacy Magellan refined products network across the Midwest and Southeast United States.
Who is the CEO of ONEOK?
Pierce Norton II is the CEO of ONEOK. He has led the company through its transformation into a diversified midstream operator, including the $18.8 billion Magellan Midstream Partners acquisition in 2023.