Schlumberger (SLB) reported second-quarter profit that topped Wall Street expectations and said North American rig counts could start to recover later this year. The largest oilfield services provider's Q2 earnings fell 36% to 88 cents per share. Analysts polled by Thomson Reuters were expecting 79 cents per share. Revenue fell 25% to $9.01 billion, above views for $8.97 billion. Shares rose 1.3% in after hours trading on the stock market today.