Founded in 1999, a Chinese oil and gas company that is the public face of China's national oil industry, is P______China. Fill in the one word 'P' prefix, which gets its name from another name for oil.

Oil is measured in barrels, which is equal to 42 US gallons or 159 liters.

Venezuela leads the world with 300.9 billion barrels of oil reserves – a 17.8 per cent share of global reserves.