I'm on business real raw honey brands IHS' numbers are larger than findings by other economists, which also point to a major impact from shale oil and gas. The introduction of technologies like hydraulic fracking and horizontal drilling, which made it practical to recover previously unused oil reserves, has helped drive a 58% increase in natural gas reserves since 2007, cut the price of natural gas by nearly three-fourths, and sparked more than $120 billion in U.S.-based investment last year, IHS said. Its study was partly financed by a number of energy and manufacturing industry groups.