A Systematic Microfluidic Study of the Use of Diluted Silica Sols to Enhance Oil Displacement.

The paper presents the results of a systematic microfluidic study of the application of nanosuspensions for enhanced oil recovery. For the first time, approximately a dozen nanosuspensions prepared by the dilution of silica sols as displacement fluids were considered. The concentration of nanoparticles in the suspensions varied from 0.

Entrained-flow oxy-gasification of pulverized coal in CO-HO-O environment.

Combustion or gasification of coal in nitrogen-free environment (CO-HO-O) is a promising technology contributing to reduce the carbon footprint in the energy industry. Accordingly, this will make it quite easy to capture practically pure carbon dioxide for subsequent storage. The study presents numerical investigation of the entrained-flow oxy-gasification processes of pulverized coal in CO-HO-O environment.

Impact of Hydrodynamic Cavitation on the Properties of Coal-Water Fuel: An Experimental Study.

It is common to use coal as raw material in heat power engineering. A number of shortcomings of coal such as ignitability cannot be easily eliminated. The use of water-slurry-based coal-water fuel instead of coal eliminates this problem.

Fluid Viscosity Measurement by Means of Secondary Flow in a Curved Channel.

This article presents a new approach to determining the viscosity of Newtonian fluid. The approach is based on the analysis of the secondary Dean flow in a curved channel. The study of the flow patterns of water and aqueous solutions of glycerin in a microfluidic chip with a U-microchannel was carried out.

Microfluidic Study of the Effect of Nanosuspensions on Enhanced Oil Recovery.

The essential advantages of microfluidic studies are the excellent visualization of the processes of oil displacement from the porous medium model, simple cleaning, and the possibility of the repeated use of the microfluidic chip. The present article deals with the process of oil displacement by suspension flooding using a microfluidic chip, simulating a porous medium, and the suspensions of silicon dioxide nanoparticles (22 nm). The mass concentration of nanoparticles in suspensions ranged from 0.

Application of Cavitation in Oil Processing: An Overview of Mechanisms and Results of Treatment.

The integrated effect on homogeneous and heterophase liquids that can be used for technological purposes has drawn the attention of researchers in various sciences. Cavitation impact on oil is among the efficient methods of intensifying chemical-technological, hydromechanical, and mass-exchange processes and the destruction of substances. This work reviews in detail and analyzes the mechanisms of impact and application of cavitation in various processes in the petroleum industry, including the refining processes, that are associated with crude oil and petroleum waste, such as reduction of viscosity, demulsification, desulfurization, and improvement of quality of heavy oil and petroleum refinery products, including oil sludge and waste oil-containing water.

Thermophysical properties of nanofluids.

This paper discusses the current state of knowledge of the thermophysical properties of nanofluids. The viscosity, thermal conductivity and heat transfer of nanofluids are considered. Experimental and molecular dynamics data are presented.