THIS is the richest regency in the Province of Riau. With a population of 637,163 people and 11,629 square kilometers in size, Bengkalis is rich in natural resources. Oil and gas represent the largest source of revenue (regional GDP in 2002 was Rp1.4 trillion). Bengkalis is known as the second biggest producer of oil in all of Indonesia, after Kutai in Kalimantan. Bengkalis used to be the number one in oil production, but it lost its ranking afte