ConocoPhillips' ( COP) second-quarter earnings rose 65% from last year, beating estimates on sharply higher production that partly reflects the acquisition of Burlington Resources. The petroleum supermajor earned $5.19 billion, or $3.09 a share, in the quarter, compared with $3.14 billion, or $2.21 a share, a year ago. Analysts surveyed by Thomson First Call were forecasting earnings of $2.81 a share in the most recent quarter. ConocoPhillips said second-quarter revenue was $47.1 billion, up from $41.8 billion a year ago. Among segments, second-quarter earnings in exploration and production totaled $3.3 billion, up from $2.55 billion a year ago, as daily production rose to 2.13 million barrels of equivalent from 1.54 million a year ago. Earnings from refining totaled $1.7 billion, up from $390 million a year ago, as crude refining capacity utilization rose 8 percentage points to 91%. "We delivered solid results in the second quarter and are pleased with the progress made integrating the Burlington Resources operations with ConocoPhillips' global portfolio," the company said. "However, we experienced unplanned downtime in both our upstream and downstream businesses, which impacted our operating performance." ConocoPhillips ended the quarter with debt of $29.5 billion and a debt-to-capital ratio of 27%. The company generated $4.8 billion in cash from operations in the quarter.