Chevron has expressed an interest in hydrocarbon exploration off the island of Crete in the Mediterranean Sea, the second such expression for Greek energy by the U.S. oil producer this year, the Greek energy ministry said on Wednesday.Greece has accepted Chevron's interest for two blocks south of Crete and will soon decide on the coordinates and on launching an international tender for the areas, which border two licensed blocks where an ExxonMobil-led consortium has been evaluating seismic data…