One of the ingredients in Granular Dynamics (or DEM) is a description of interparticle forces. In this paper the effect of surface roughness on Hamaker and liquid bridge interactions is investigated. Three different models are used (excluded volume, stochastic roughness and explicit asperities). In general, the latter two give similar results. Roughness decreases interactions up to several orde...

As the heterogeneity of pore systems, carbonate rocks commonly exhibit unpredictable porosity vs. permeability relationship and make exploitation prediction prolific reservoirs difficult. Most published studies on systems were conducted in sandstones shales, while rocks, especially dolostones have received little attention. In this study, we investigate porous dolostone reservoir Lower Triassic...

Kampong Som Basin is a Paleozoic-Mesozoic sedimentary basin located in southern Cambodia. While the sandstone of Bokor Formation expected to be reservoir for hydrocarbon accumulation. Hence, this study aims define properties, quality, and factors that control rock quality. Sandstones are sampled analyzed using helium porosimeter, nitrogen permeameter, polarized light microscope, scanning electr...

   Graphene oxide nanosheet (GONS) can be a suitable membrane for gas separation with high permeability and selectivity. Separation of N2/CO2 using functionalized GONS was investigated by molecular dynamics simulations. The simulated systems were comprised of two types of GONS with a pore in their center, N2 and CO2 molecules. The selectivity and ...

To characterize the coal measure shale pore structure of Xiashihezi Formation in Sunan Syncline block, a series experiments were conducted. Results show that main components shales are clay minerals and quartz, organic matter, fluid escaping, interlayer, intercrystalline interparticle pores well-developed. The specific surface area (SSA) is concentrated with size <50 nm significantly hig...