(Reuters) - Halliburton Co , the world's second-largest oilfield services company, reported a higher-than-expected quarterly profit on Monday as more drillers tapped its expertise in extracting oil and gas from U.S. shale rock.
Third-quarter net profit climbed to $683 million, or 74 cents per share, from $544 million, or 60 cents per share, a year earlier.
Excluding one-time items, HALLIBURTON (HAL.NY)earned 94 cents per share, exceeding the analysts' average estimate of 92 cents, according to Thomson Reuters I/B/E/S.
Revenue rose 40 percent to $6.55 billion. Analysts expected $6.39 billion.
(Reporting by Ernest Scheyder in New York, with additional reporting by Braden Reddall in San Francisco; Editing by Lisa Von Ahn)
