More information necessary about fracking

摘要

At a recent meeting of the Directors of European Geological Surveys of the North Atlantic Group (NAG), held in Copenhagen/Denmark on 12.09.2014, the directors published a statement about the extraction of shale gas by the "Hydraulic Fracturing Method" (also hydrof-racturing, hydro tracking, or short: fracking), a well-stimulation technique in which rock is fractured by a hydraulically pressurized liquid to improve its permeability. Thus, reports were given on the varying situations of the NAG European Surveys, including some scientific advice to respective governments on the development of shale gas.