How oil-price shocks affect producers and consumers.

• Author: Kellogg, Ryan
• Position: Research Summaries

Markets for crude oil have been characterized by multiple episodes of volatility over the past 20 years. The price of Brent crude oil, an international "light" crude oil benchmark priced in the North Sea, varied from a low of about $10 per barrel (bbl) in 1999 to a peak of more than $ 140/bbl in 2008, before falling again during the Great Recession. While the Brent price stabilized around $110/bbl during 2010-13, it recently and suddenly collapsed to around $50/bbl. The majority of these oil price swings have been attributed to global demand shocks such as the Great Recession, though the price drop this past autumn has not yet been extensively studied. (1)

The accompanying figure shows the price both of Brent light and West Texas Intermediate (WTI) crude oil, which is priced in Cushing, Oklahoma. Historically, the WTI and Brent crude oil prices tracked each other extremely closely. However, beginning in 2011 these two price series diverged substantially, with WTI sometimes falling more than $20/bbl below Brent. This gap has recently closed substantially, but not entirely.

In a series of papers, my co-authors and I have studied how shocks to crude oil markets affect oil producers and consumers. We have addressed questions such as "How do oil drilling and production respond to oil price shocks?", "Is oil price volatility itself important?", and "How do consumers forecast future price changes?" This research summary briefly describes these papers and notes issues where future research is needed.

The Cushing Oil Glut

In a recent project, Severin Borenstein and I studied the divergence between WTI and Brent oil prices that began in 2011. (2) This divergence arose from the confluence of a dramatic increase in unconventional crude oil production in Alberta, North Dakota, and West Texas and a lack of sufficient pipeline capacity to transport this new crude oil to Gulf Coast refineries. These factors led to a "glut" of oil at Cushing, Oklahoma, depressing the WTI price relative to the price of international crude oil. Our paper focuses on whether this decrease in the WTI price passed through to regional gasoline and diesel prices.

Using data from the Energy Information Administration (EIA) on wholesale refined product markets, we find that gasoline and diesel prices in the Midwest, including Oklahoma, did not decrease at all in response to the glut of crude oil at Cushing. This lack of response is explained by the fact that, even though crude oil pipeline capacity was constrained after 2011, refined-product pipeline capacity was not. Thus, the marginal barrels of gasoline and diesel in the Midwest were, and still are, imported from the Gulf Coast, where they are refined using high-cost internationally-procured crude oil. These results...