... proppant screen-out Injection Rate equivalent diameter proppant pile gel load fracture proppant size semi-analytical model fluid viscosity proppant density vertical direction unconventional reservoir Introduction Development of unconventional reservoirs including shale oil and gas...

... and shaly sands which contain some thin shale lenses. The absolutely permeability of clean sands is 6 Darcy in the horizontal direction and 3 Darcy in the vertical direction. The porosity of both clean sands and shaly sands is approximately 35%. The producers with the length of 900 m are located...

... difference between reservoir and barrier. Therefore, the man-made fractures easily extend along vertical directions during fracturing construction. In this way, it results in low net pressure and narrow man-made fractures. The demanding width and length of these fractures are unavailable. On the basis...