shares of schlumberger ltd slb rallied 11 in premarket trading friday after the oil services company reported firstquarter profit and revenue that rose above expectations and announced a 40 increase in its dividend net income rose to 510 million or 36 cents a share from 299 million or 21 cents a share in the yearago period excluding nonrecurring items adjusted earnings per share of 34 cents topped the factset consensus of 33 cents revenue grew 141 to 596 billion beating the factset consensus of 591 billion as the companys digital  integration reservoir performance and well construction business exceeded expectations while production systems came up shy separately the new quarterly dividend of 175 cents a share up from 125 cents will be payable july 14 to shareholders of record on june 1 based on thursdays stock closing price of 4065 the new annual dividend rate implies a dividend yield of 172 compared with the yield for the spdr energy select sector etf xle of 322 and the implied yield for the sp 500 spx of 144