Saudi state oil giant Aramco plans to raise at least $3 billion from a new bond issue that would be its first in three years, sources with knowledge of the matter told Bloomberg on Tuesday. Saudi Aramco plans to offer bonds with 10, 30, and 40 years of maturity and expects to begin meetings with fixed-income investors on Tuesday, according to Bloomberg’s sources. The proceeds from Aramco’s new bond sale will likely go to refinancing existing borrowings and helping the investment program of the world’s largest…