Halliburton (HAL) reported fourth-quarter results above analyst estimates on Friday as it expanded international operations to offset a decline in drilling at home. The world's second-largest oilfield services company said fourth-quarter EPS fell 37% to 63 cents, beating views by 2 cents. Revenue rose 3.4% to $7.3 billion, above analyst estimates of $7.1 billion. Shares were up 4.5% in midday trading Friday. Natural gas prices fell to the lowest