The world's second-largest oilfield services company after Schlumberger Ltd. ( SLB ) believes that despite certain issues in North America - characterized by depressed natural gas fundamentals and cost inflation - the long-term prospects for the business remain robust. HALLIBURTON CO (HAL): Free Stock Analysis Report SCHLUMBERGER LT (SLB): Free Stock Analysis Report To read this article on Zacks.com click here. The dismal showing in North America - responsible for three fourths of the segment profits - was somewhat offset by strong international performance.