Technological advances are rewriting what experts thought they knew about Permian Basin oil fields. None more so than work now being done on residual oil zones, experts say. Read more: Technology indicates Permian may have triple the oil believed in place – MRT.com: Oil & Gas http://www.mrt.com/business/oil/article_3da8fdae-8250-11e4-9fa8-3f1ac6ad1af9.html#ixzz41IV28aWb Under Creative Commons License: Attribution