-- 作者： yaoliang555 -- 发布时间： 2012/03/25 06:14pm The invention created an alternative approach to crack the rock rather than hydraulic fracturing which is rising environmental issue. Also hydraufrac is not perfect, its fracture  conducticity could be diminished over time and fracture deveploment will largely depend on reservoir stress situation and natural fracture direction. The new invention need around $50,000 to carry lab tests to verify its significant effects. Please contact me by yaoliang111@hotmail.com.  James