"If prices remain at these lows, this may result in a decline in U.S. upstream capital expenditures by 10 percent in 2015, which will have implication for future production growth," Birol told Reuters at the launch of the report.
U.S. oil production has risen by 1 million barrels per day (bpd) per year over the past year as strong oil prices led to a boom in shale oil production through fracking, a technique that uses high pressure to capture gas and oil trapped in deep rock.
Production is set to grow by an additional 963,000 bpd in 2015, according to the U.S. Energy Information Administration.
Analysts told CNBC the current decline in oil prices could start to deter investment in U.S. shale oil production immediately.
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Gareth Lewis-Davies, senior oil strategist at BNP Paribas, told CNBC on Wednesday that the growth in non-OPEC supply would "stall at these low prices."
"We think current production will not be affected because the operating costs are covered but a more difficult question is the extent to which investment will be canceled or delayed as a consequence of low oil prices," he told CNBC's "Worldwide Exchange."
"At the current levels, we still see a fair amount of [U.S.] shale oil production on a full cycle -- but not all of that which is currently planned. So on that basis, the growth in non-OPEC supply will start to stall at these prices, if these low prices are sustained," he said.
Last month, the IEA's executive director Maria van der Hoeven told Reuters that "some 98 percent of crude oil and [natural gas] condensates from the United States have a breakeven price of below $80 and 82 percent had a breakeven price of $60 or lower," meaning that the U.S. shale oil producers could well cope with current lower oil prices.