Ethylene Crackers

Lately the ethane market seems out of whack.  Ethane production continues to increase even as it’s become the lowest margin (highest cost) feedstock for Gulf Coast petrochemical crackers – it’s main market.  Ethane production by processing plants has been at an all-time high since June this year even as ethane prices fell to historical lows.  Meanwhile, ethane inventories have fallen from their recent peak in July.  How can all that make sense?  Today we speculate as to what may be going on.