A barrel of natural gas liquids from the Utica shale typically contains:
• 40 to 45 percent ethane. It can be removed from the natural gas or can remain in the natural gas to boost heating capabilities.
• 25 to 30 percent propane.
• 5 to 10 percent butane.
• 10 percent isobutane.
• 10 to 15 percent natural gasoline. This is a highly volatile and unstable commodity that typically is added to other products.