China's big three oil giants' shares slump following Maduro's capture

China's big three oil giants' shares slumped on Monday, following a slide in oil prices after the United States' capture of Venezuelan President Nicolas Maduro over the weekend.

Shares in Cnooc (0883) and PetroChina (0857) dropped by 3.3 percent and 3.2 percent, respectively, in the afternoon trading session. China Petroleum & Chemical (0386) also lost 1.9 percent. 

China is the biggest buyer of Venezuelan oil. 

Brent crude fell 50 cents, or 0.82 percent, to US$60.24 a barrel, while US West Texas Intermediate crude was 52 cents, or 0.9 percent lower, at US$56.8 a barrel.