International oil prices rose significantly on the 15th.

By the close of trading that day, the October-delivery light crude oil futures on the New York Mercantile Exchange rose by $4.44 to settle at $105.83 per barrel, a gain of 4.38%; the November-delivery London Brent crude oil futures rose by $3.07 to settle at $108.75 per barrel, a gain of 2.9%.