Abstract: A workflow is provided that characterizes the hydraulic fracturability of a rock based on properties obtained from CT scanning and from non-CT based data. The characterization is based on obtaining a plurality of properties of a core sample as a function of axial location in the core sample. The workflow includes obtaining CT data from at least one CT scan of the core, obtaining heterogeneity data of the core, generating a heterogeneous rock analysis (HRA) model based at least on the obtained CT data and heterogeneity data; quantifying statistically significant distinct rock classes in the core, and assigning hydraulic fracturability index (HFI) values to each distinct rock class, as well as any HFI variation within each rock class. An HFI value is assigned to each rock class, and within a rock class, in the core and those values can be propagated to other locations in the same or surrounding wells.

Abstract: A method of fracture fluid clean-up from a fracture by assisting Darcy flow with electro-osmotic effects is provided. Proppants having suitable surface potential, and fracture fluids having suitable electrical conductivity are employed. A suitable electric field is imposed, using electrodes placed on the surface or in adjacent wells. The current creates an electro-osmotic flow that carries fluid to the wellbore.

Abstract: A method is given for improving the clean-up of fracture fluid from a fracture by assisting Darcy flow by electro-osmotic effects. Proppants having suitable surface potential, and fracture fluids having suitable electrical conductivity are chosen. Then a suitable electric field is imposed, using electrodes placed on the surface or in adjacent wells. The current creates an electro-osmotic flow that carries fluid to the wellbore.