Horizontal drilling in unconventional areas improves economics

摘要

Horizontal drilling in the U.S.has increased nearly 50% since 2002.One reason:advances made in horizontal-drilling and fracture-stimulation technologies have allowed some E&P companies to realize higher returns,lower finding and development costs,and prolonged production in tight-sand and shale plays,according to Tom Gardner,director of E&P research for Simmons&Co.International.