Enterprise

Crude-oil-focused drilling and completion in the Permian Basin is generating fast-increasing volumes of associated gas — and creating opportunities for midstream companies that provide “wellhead-to-water” services for natural gas and NGLs. ONEOK has become a much bigger player in this space via several transformational acquisitions and MPLX has been making moves of its own. (The companies also are working together on a new LPG export terminal — and more.) In today’s RBN blog, we continue our review of Permian-to-Gulf midstreamers’ expansion plans with a look at what ONEOK and MPLX are up to. 

In their first earnings calls of 2025, the handful of large midstream companies that provide the gamut of “wellhead-to-water” services in Texas laid out plans for yet another round of projects — everything from gas processing plants and takeaway pipelines to fractionators and export terminal expansions. At the same time, many of these same midstreamers expressed a degree of caution about overbuilding. They sought to reassure Wall Street that they were only approving plans underpinned by strong commercial support. In today’s RBN blog, we discuss the latest capital spending plans of this select, upper tier of midstream service providers. 

Exactly the same product. Exactly the same day. In storage very nearby. Yet their prices diverged by 17 cents per gallon — a spread equivalent to $7 per barrel. That’s a very substantial difference for prices that typically are almost indistinguishable, differing by an average of only 0.3% in recent years. The disparity roiled the financial underpinnings of exports for over a month and busted numerous inventory hedges. Is this some rare commodity? Hardly. It’s Mont Belvieu propane, the Rock of Gibraltar benchmark propane price in the U.S., and to a great extent around the world. But during October there was a crack in that rock a mile wide. 

Exactly the same product. Exactly the same day. In storage very nearby. Yet their prices diverged by 17 cents per gallon — a spread equivalent to $7 per barrel. That’s a very substantial difference for prices that typically are almost indistinguishable, differing by an average of only 0.3% in recent years. The disparity roiled the financial underpinnings of exports for over a month and busted numerous inventory hedges. Is this some rare commodity? Hardly. It’s Mont Belvieu propane, the Rock of Gibraltar benchmark propane price in the U.S., and to a great extent around the world. But during October there was a crack in that rock a mile wide. 

The Gulf Coast is the engine of U.S. energy markets and its fiercely competitive. Over the past decade, monumental growth of crude oil and NGL production, predominantly from the Permian Basin, has led to a surge in exports, with more than 90% of these liquids departing from marine terminals along the Texas and Louisiana coasts. To facilitate that growth, the region has also experienced a tremendous buildout of gathering systems, pipelines, processing facilities, and especially export docks. Major Gulf Coast market regions like Corpus Christi, Houston, Beaumont, Lake Charles and Baton Rouge all have unique advantages and disadvantages. And the companies that operate in those regions have strategic motivations for where they would like to see new volumes go. As the Gulf Coast energy sector presses on to a new horizon, competition for market share among major players is intense, impacting producers, midstream operators, downstream consumers and exporters alike. That was the focus of our recent NACON: PADD 3 conference and it’s the subject of today’s RBN blog.