Exxon Mobil Corp on Friday said it is accelerating output at its Guyana offshore oil development, starting a new production vessel that will bring total capacity to more than 340,000 barrels per day.An Exxon-led consortium started production…Exxon Mobil Corp on Friday said it is accelerating output at its Guyana offshore oil development, starting a new production vessel that will bring total capacity to more than 340,000 barrels per day.An Exxon-led consortium started production…MarineLink NewsRead More