One of the varieties of pores, often found in natural or artificial building materials, are the so-called blind pores of dead-end or saccate type. Three-dimensional model of such kind of pore has been developed in this work. This model has been used for simulation of water vapor interaction with individual pore by molecular dynamics in combination with the diffusion equation method. Special inv...

We describe the binding of proteins to lipid bilayers in the case for which binding can occur either by adsorption to the lipid bilayer membrane-water interface or by direct insertion into the bilayer itself. We examine in particular the case when the insertion and pore formation are driven by the adsorption process using scaled particle theory. The adsorbed proteins form a two-dimensional "sur...

Submarine landslides occur along active and passive continental margins and are potentially triggered by numerous factors including the dissociation of gas hydrates. The hazard produced by such landslides can damage infrastructure (oil platforms, telecommunication lines), generate tsunamis, and cause a catastrophic release of methane to the atmosphere and ocean. Here we develop numerical models...

Nuclear Magnetic Resonance (NMR) T2 measurements can be used directly to estimate petrophysical properties of reservoir rocks such as porosity and irreducible water saturation. They are also sensitive to pore-size distribution enabling the estimation of permeability and potentially capillary pressure. Several methods have been proposed to derive synthetic drainage capillary pressure information...

The kinetics of methane hydrate formation in marine sediments with different water saturations are important to assess the feasibility of the hydrate production and understand the process of the secondary hydrate formation in the gas production from hydrate reservoir. In this paper, the behaviors of methane hydrate formation in marine sediments from the South China Sea at different water satura...

One of the reasons why river or sea beds change their morphological surface continuously is the transportation of soil particles caused by water flow normal and parallel to the soil-water interface. This erosion process may be linked to the expansion and shrinkage of gas bubbles in the pore fluid due to pressure changes. Thus delayed pore water pressure responses occur by fluctuating water leve...

The Hong Kong International Airport was built on a man-made island. The groundwater head of the deep basal sand and gravel aquifer remains high several years after the land reclamation. The heads in different aquifers indicate an upward groundwater flow. The aim of this study is to understand the abnormally high pore water pressure in the basal aquifer. The most plausible explanation for the ab...

Preformed particle gel (PPG) has been successfully synthesized and applied to control excess water production in most of the mature, waterflooded oil fields in China. This paper reports on laboratory experiments carried out to investigate PPG transport mechanisms through porous media. Visual observations in etchedglass micromodels demonstrate that PPG propagation through porous media exhibits s...

The transport behavior of toluene and n-hexane in gamma-alumina membranes with different pore diameters was studied. It was shown that the permeability of water-lean hexane and toluene is in agreement with Darcy's law down to membrane pore diameters of 3.5 nm. The presence of molar water fractions of 5-8 x 10(-4) in these solvents led to a permeability decrease of the gamma-alumina layer by a f...

Recent advances in theory and experimentation motivate a thorough reassessment of the physics of debris flows. Analyses of flows of dry, granular solids and solid-fluid mixtures provide a foundation for a comprehensive debris flow theory, and experiments provide data that reveal the strengths and limitations of theoretical models. Both debris flow materials and dry granular materials can sustai...