China Petroleum & Chemical Corp.’s third-quarter profit plummeted 92 percent as lower oil prices and production dwarfed an increase in refining revenue. Net income at Asia’s biggest refiner, known as Sinopec, was 1.64 billion yuan ($258 million), or 0.013 yuan a share, compared with 19.3 billion yuan, or 0.165 yuan, a year earlier, the Beijing-based company said in a statement to the Shanghai Stock Exchange on Thursday. That compares with the 4.27 billion yuan average of three analyst estimates compiled by Bloomberg. Higher refining revenue was swamped by a drop in oil prices. Brent, the benchmark for more than half of the world’s crude, averaged about $51 a barrel in the third quarter, compared with more than $103 a year ago. Prices have slumped more than 45 percent in the past year amid a global glut that the International Energy Agency estimates will remain until at least the middle […]