'Til You Use Me Up - Ethane Recovery Must Increase to Meet Demand

It looks like the U.S. ethane market may have just dodged a bullet. Since late May, the U.S. Bureau of Industry and Security effectively banned ethane exports to China, the destination for two-thirds of the ethane sent out of Gulf Coast docks — about 225 Mb/d in 2024. Ethane has become a bargaining chip in U.S.-China negotiations over rare earths and tariffs, in part because China has no alternative source of waterborne ethane feedstock for its petchems. But playing the ethane card presented a potential problem for the U.S. too. While China isn’t the only export market for U.S. ethane, there are very limited other destinations for the volumes they typically take. The need to find a home for those volumes could have required significantly more “rejection” of ethane into natural gas at U.S. gas processing plants — i.e., selling ethane for its fuel value instead of recovering it for petchems or export.  In today’s RBN blog, we examine the ethane export issue, which remains in flux as part of the broader U.S.-China trade agreement still being finalized. 

For the past few years, demand for U.S.-sourced ethane has been on the rise as petrochemical companies in the U.S. and abroad developed new, ethane-only steam crackers and retrofitted existing crackers to allow more ethane to be used as feedstock. U.S. NGL production was increasing too, of course, alongside growth in crude oil-focused plays like the Permian and “wet” gas plays like the Marcellus/Utica. But recently, drilling-and-completion activity has slowed to a crawl and NGL production has been leveling off, which means that less of the ethane that comes out of the ground with oil and gas will be “rejected” into natural gas and more will be separated out at fractionation plants. Today, we conclude a series on ethane exports with a look at U.S. NGL production, ethane supply and demand, ethane exports, and ethane prices.

The run-up in U.S. production of natural gas liquids over the past 10 years spurred the development of a whole lot of infrastructure. More pipelines to transport mixed NGLs from production areas to NGL storage and fractionation hubs, especially Mont Belvieu, TX. More fractionators to split y-grade into ethane, propane, and other “purity” products. And, specifically for ethane — the lightest, quirkiest, and most plentiful NGL — a number of ethane-only steam crackers were built along the Gulf Coast to take advantage of the new supply abundance, as were ethane-only pipelines, export terminals, and a whole new class of cryogenic ships — Very Large Ethane Carriers, or VLECs — to move the product to markets in Europe and Asia. Today, we begin a new series on the unique nature of overseas ethane exports, including why most incremental export volumes are tied to long-term supply deals with a handful of global ethylene plants designed — or reconfigured — to “crack” ethane.