China’s Sinopec Corp said on Tuesday it has tapped a daily flow of 30 tonnes of oil and 1,500 cubic meters of gas at a mature oilfield in east China’s Jiangsu province. The company said the flows, from exploration well Hua-2-ce in the Jiangsu oilfield, marked a breakthrough in unlocking 1.1 billion tonnes of prospective shale oil resources in the Subei basin.