Chevron Corp , the second-largest U.S. oil company, reported a jump in quarterly earnings on Friday as oil prices surged and refining profits improved along with the global economy.

Chevron's first-quarter profit rose to $6.2 billion, or $3.09 per share, from $4.6 billion, or $2.27 per share, a year earlier.

(Reporting by Matt Daily, editing by Gerald E. McCormick)

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