When oil and shale gas exploration in deep

When oil and gas exploration in deep , high pressure low proppant manufacturing deposit closure after fracturing treatment, the rock cracked petroleum , oil and gas from the cracks in the channel formed by the pooled out. Along with a high-pressure high-alumina support material was filled into the formation in rock fissures , cracks do not play a supporting but closed due to stress release , thereby maintaining high conductivity , so that the oil and gas flow, increase production.