The wettability of aquifer rocks is a key physical parameter which exerts an important control on the transport, residual trapping, distribution and eventual fate of chlorinated hydrocarbon solvents (CHSs) released into the subsurface. Typically chlorinated solvents are assumed to be non-wetting in water saturated rocks and unconsolidated sediments. However industrially formulated solvent produ...

[1] We study macroscopic (centimeter scale) dispersion using pore-scale network simulation. A Lagrangian-based transport model incorporating flow and diffusion is applied in a diamond lattice of throats with square cross section whose radius distribution is the same as computed for Berea sandstone. We use physically consistent rules using a combination of stream-tube routing and ideal mixing to...

Abstract Channeling between injectors and producers leads to bypassed oil left in the reservoir, which is one of most common reasons that wells mature fields experience high water cut after long-term waterflooding. Identification evaluation higher permeable channels (thief zones) are key effectively plug these thief zones improve conformance flood. This study applies three different methods ide...

Due to the influence of long-term waterflooding, reservoir physical properties and percolation characteristics tend change greatly in offshore unconsolidated sandstone reservoirs at ultrahigh water-cut stage, which can affect remaining oil distribution. Remaining characterization proper development strategy-making are vital importance achieve high-efficiency mature reservoirs. The present numer...

Heavy crude oil is known as oil that is highly viscous and of a higher density than that of conventional oil. Sand reservoirs containing heavy oil generally consist of unconsolidated sediments deposited at a shallow burial depth, with high porosity and permeability. In seismic exploration, acoustic impedance inversion is a commonly used tool in reservoir prediction. However, due to the unconsol...