Oilfield-equipment maker Grant Prideco ( GRP) said its second-quarter earnings jumped from a year earlier, led by higher revenue across all the segments. The company earned $105.6 million, or 79 cents a share, in the quarter, compared with $25.8 million, or 20 cents a share, a year ago. Analysts surveyed by Thomson First Call were expecting earnings of 69 cents a share in the most recent quarter. Second-quarter revenue rose 36.2% from a year ago to $431.8 million. Analysts were expecting revenue of $428.3 million. Revenue from drilling products and services climbed 48% to $213.6 million, led by increased volumes and improved pricing. Revenue from drill bits rose 24.9% to $116.2 million, led by improved pricing and favourable product mix, while revenue from tubular technology and services segment rose 28% to $101.8 million. The company expects to earn $3.20 a share, excluding any unusual items, for the fiscal year 2006. Analysts are calling for a profit of $2.90 a share.