Investors of the world’s biggest oil-servicer providers are so far looking past the most punitive round of U.S. sanctions on Russia. Schlumberger Ltd., the biggest of the hired guns who drill, frack and rejuvenate oil wells globally, has the most at stake in Russia among rivals, J. David Anderson, an analyst at Barclays Plc, said Monday in a phone interview. Even so, that amounts to less than 10 percent of sales at the Houston- and Paris-based contractor. Dozens of Russian tycoons and companies were slapped with U.S. sanctions and penalties, sending Moscow-traded stocks to their worst drop in four years. Meanwhile, the Philadelphia Oil Services Index ticked up 1 percent at 1:10 p.m. in New York. “From a global oil-market perspective, and the amount of spending that comes out of Russia, it’s a fairly small part of the overall story,” Anderson said. “Investors are probably hesitant to […]