But a plan to move heavy oil quickly from inventories at the Petroboscan joint venture with state-run company PDVSA is facing delays because of lack of dredging at Maracaibo Lake's navigation channel, the people said. Petroboscan has instructed vessels since to limit their draft after loading at the Bajo Grande oil terminal. That means about 250,000 barrels of Boscan heavy crude can move at a time through the channel linking Bajo Grande to the Caribbean Sea. In a sign that Chevron expects to expand operations quickly, the oil producer has begun advertising for Venezuelan contract administrators and cargo schedulers. The company wants to assemble a trading team to market oil from Venezuela and expand its role in the four projects.

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