Global oil demand will grow 700,000 barrels per day (bpd) in 2010 as demand growth returns after two years of contraction, OPEC Secretary General Abdullah al-Badri said in a speech delivered on his behalf on Tuesday. China and India will lead global economic growth next year, with the producer group forecasting world GDP growth at 2.7 percent next year, up from an earlier forecast of 2.3 percent in July, he said in the text of the speech.