Oil, too, including associated hydrocarbon liquids known as lease condensates, has benefited from the American fracking boom.
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Continuing a trend that has sent ripples through global energy markets in recent years, U.S. oil and natural gas reserves hit new highs in 2013, according to a December 2014 Energy Information Administration report.

Proved natural gas reserves rose 9.7 percent to reach a record 354 trillion cubic feet (tcf) at the end of 2013, the Energy Information Administration (EIA) reported, while proved oil reserves increased 9.3 percent to 36.5 billion barrels.