Halliburton Co warned of pricing pressure for its oilfield services in North America, its largest market, and challenges in its international operations, as an extended slump in oil prices continues to force drillers to slash spending. The company posted a better-than-expected quarterly profit on Monday, helped by higher revenue and operating income from Latin America, the Middle East and Asia. However, revenue and profit from all other regions fell due to the global slump in oil prices , which have nearly halved since peaking last June. North America, which accounted for more than half the company’s first-quarter revenue, “experienced an unprecedented decline in drilling activity,” Chief Executive Dave Lesar said in a statement, adding that “Industry prospects will continue to be challenged in the coming quarters.” The […]