As a type of unconventional oil and gas resources. tight sandstone reservoir has low permeability and porosity properties and thus is commonly necessary to develop through hydraulic fracturing treatment. Due to the coexistence of natural fractures and induced hydraulic fractures. the heterogeneity of reservoir permeability becomes severe and therefore results in complicated fluid seep... https://www.bowlersparadisers.shop/product-category/3-ball-roller/