Oil prices edged up in early trading in Asia on Monday as U.S. drilling slowed and analysts estimated that $1.5 trillion worth of planned American production was uneconomical at prices of $50 per barrel or lower. Crude oil prices have plunged almost 60 percent since June 2014, when soaring global production started to clash with slowing demand. This includes losses of more than a quarter since June this year as a sharp slowdown in China has sparked concerns over the health of the world economy. Analysts said the low prices were beginning to impact production as drillers slow down new projects, especially in cost-sensitive North America where drillers react fast to changing prices. U.S. energy firms cut oil rigs for a third week in a row last week, a sign that the latest crude market […]