Brent crude prices fell during Asian trading on Tuesday, as concerns about lower demand due to the slowdown in the Chinese economy affected the impact of lower oil production in Libya. Brent crude futures fell 37 cents, or 0.48 %%, to $77.15 a barrel.. US West Texas Intermediate crude, which did not settle yesterday, Monday, due to the Labor Day holiday in the United States, rose by 28 cents from Friday's close at $73.55. Source: National Iraqi News Agency