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Congressional Research Service
Informing the legislative debate since 1914


S


January 24, 2019


U.S. Oil Imports, Exports, and Energy Security


In December  2015, P.L. 114-113 lifted restrictions on U.S.
exports of crude oil, allowing U.S. exporters full access to
world oil markets. The restrictions had been in effect for 40
years. Lifting the export restrictions addressed the changing
nature of U.S. oil supply which is characterized by growing
output of light oil. Due to the rapidity with which these oil
supplies have entered the market, producers initially
encountered infrastructure bottlenecks in transporting the
new oil supplies to buyers, as well as noting a fundamental
mismatch  between the characteristics of the new oil
supplies and the desired crude oil inputs of U.S. refineries.
Many  producers of the new oil supplies found that they
could only sell their oil at a discount to both West Texas
Intermediate (WTI) and other world reference prices of
crude oil (e.g., Brent and Dubai). As a result, low realized
prices threatened the potential growth of the U.S. oil
industry. Producers saw entry into the world oil market as a
way to increase demand for their oil and to close the price
spread.

While opponents of the oil export restrictions pointed to
enhanced domestic oil supply and job growth, proponents
of the ban claimed that its repeal could lead to higher
domestic gasoline prices as well as lower capacity
utilization rates and fewer jobs in the refining industry.
Also of concern were issues of energy security. Some
define energy (oil) security in terms of oil independence.
From  this point of view, domestic oil supplies replacing
imports signified reduced dependence on the world oil
market, and hence, greater oil security. Exporting U.S. oil
would in their argument leave the United States dependent
on imports and the world oil market. Regardless, the United
States would remain connected to the world oil market
through crude oil imports and petroleum product
imports/exports.

Evauating Crude Oil Imports and
  xports
Three years have passed since the lifting of the crude oil
restrictions, and an evaluation of the effects, both in terms
of trade and energy security, can be undertaken.

Crude oil exports have risen. From 2008 to 2012 the United
States exported on average about 45 thousand barrels of
crude oil per day (mb/d). In the next three years, 2013 to
2015, a time characterized by growing U.S. shale oil
production, but with the export restrictions still in effect,
exports averaged about 316 mb/d (mostly to Canada which
was not subject to the restrictions), a six-fold increase. In
the three years since the lifting of the restrictions, crude oil
exports have averaged over 1.2 million barrels per day
(mmb/d), a four-fold increase. Exports have increased each
year since the restrictions were lifted, rising from 591 mb/d
in 2016 to 1.1 mmh/d in 2017 and 1.9 mmh/d in 2018.


Why  is domestic oil exported instead of being used
domestically? Exports are likely taking place for three
reasons. First, the type of oil that has come into the U.S.
supply picture in the past five years is light, sweet (low
sulfur) oil. Many U.S. refineries are not optimized to use
this type of oil. As a result, U.S. oil is shipped overseas
while oil of a type appropriate to U.S. refinery demand is
imported. This type of trade transaction increases U.S.
integration with the world oil market, and it maximizes the
value of the output of the oil refining industry. Second,
logistical cost issues may determine the sourcing of crude
oil. Given the location of a refinery, it may be cheaper to
procure oil overseas than to purchase and ship domestic oil
given transportation constraints. Third, some large U.S.
refineries are owned by foreign national oil companies and
they may choose to use their own nation's oil, imported into
the United States in their operations. For example,
Venezuela owns  Citgo Petroleum Corporation and Saudi
Arabia owns Motiva  Enterprises Company, both with
refineries in the Gulf Coast region.

Crude oil imports have fallen. From 2008 to 2012 the
United States imported on average about 9 mmb/d. In the
next three years, 2013 to 2015, imports averaged about 7.4
mmb/d,  a decrease of about 18%. In the three years since
the lifting of the restrictions, crude oil imports have
averaged about 7.9 mmb/d, an increase over the previous
three years, but still less than the 2008 to 2012 period. The
data suggest that while imports of crude oil declined with
the lifting of the export restrictions, they then began to
increase, providing some evidence to suggest U.S.
dependence  on world markets might be increasing.

Over the same period, product supplied to the U.S. market
(the Energy Information Administration measure of
consumption) increased from 19.6 mmb/d  in 2016 to 19.9
mmb/d  in 2017 and, based on available 10-month data for
2018, is set to total about 20.3 mmb/d. A possible
interpretation of these data might conclude that the
approximately 700 mb/d increase in U.S. product supplied
from 2016 to 2018 resulted largely from the 500 mb/d
increase in imported crude oil, again raising the question as
to whether growth in the U.S. market is tied to import
growth.

This picture is altered when net imports are considered. Net
imports are defined as gross imports minus exports. This
measure brings into sharper focus a nation's dependence on
the global market for commodities it both imports and
exports.

Crude oil net imports have fallen. From 2008 to 2012, U.S.
imports of crude oil averaged about 9 mmb/d. In the next
three years, 2013 to 2015, net imports averaged 7.1 mmb/d,


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