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...

in the present investigation surface modification of silica nanoparticles by alumina was carried out by sol-gel process. fourier transform infrared (ftir) and x-ray fluorescence (xrf) confirmed the synthesis of silica and the surface modification as alumina is anchored to silica surface. field emission scanning electron microscopy (fesem) and transmission electron microscopy (tem) investigation...

In order to determine the matching relationship of polymer molecular weight and reservoir permeability in ASP (alkaline/surfactant/polymer) flooding, a number of core flooding experiments with different polymer molecular weights are performed. Two types of curves for the relationship between the pressure difference and the injection pore volume multiples are obtained. One describes the characte...

Compacted clays are considered as excellent candidates for barriers to radionuclide transport in future repositories for nuclear waste due to their very low hydraulic permeability. Diffusion is the dominant transport mechanism, controlled by a nano-scale pore system. Assessment of the clays' long-term containment function requires adequate modelling of such pore systems and their evolution. Exi...

The micropore-throat structure is a controlling factor on the capacity of storage and seepage for tight sandstone reservoirs. Therefore, quantitatively analyzing pore-throat crucial realizing oil accumulated in To study micropore-throat, battery experiments such as casting thin sections, scanning electron microscopy, high-pressure mercury injection, petrophysical characteristics reservoirs were...

Pore space characterization of carbonate materials is fundamental importance to a wide range earth science and engineering applications. In this study, we show how confocal microscopy can be used as reliable tool visualize quantify the heterogeneous pore in materials. imagery, quality images controlled by various factors including choice fluorophore, objective lens, medium imaging. Our experime...

Abstract Chang-10 reservoir in Wuqi–Ansai oilfield of Ordos Basin is restricted by its strong microscopic heterogeneity, complicated pore structure and unclear oil–water movement rules. The technology nuclear magnetic resonance (NMR) an excellent method to quantitatively evaluate the fluid different types, experiments such as cast thin slices, scanning electron microscope (SEM) high-pressure me...

three activated carbons are synthesized in a rotary reactor at different activation times. the adsorption isotherms of the samples are measured the pore size distribution of the samples is determined using combined saito and foley method, bjh method. an average potential function has been determined inside the cylindrical pores. the effect of activation time on the pore size distribution sample...