High-resolution X-ray imaging combined with a steady-state flow experiment is used to demonstrate how pore-scale displacement affects macroscopic properties in an altered-wettability microporous carbonate, where porosity and fluid saturation can be directly obtained from the grey-scale micro-CT images. The resolvable macro pores are largely oil-wet average thermodynamic contact angle of 120°. p...

Residual oil fly ash (ROFA) is a pollutant dust that stimulates production of reactive oxygen species (ROS) from mitochondria and apoptosis in alveolar macrophages (AM), but the relationship between these two processes is unclear. In this study, human AM were incubated with ROFA or vanadyl sulfate (VOSO(4)), the major metal constituent in ROFA, with or without nitro-L-arginine methyl ester (L-N...

Abstract Chemical enhanced oil recovery applications continue to face a variety of obstacles, particularly in high saline and high-temperature reservoirs, addition chemical prices. This issue creates difficulty developing optimal recipes that can withstand these extreme circumstances so achieve maximal hydrocarbon at the lowest feasible cost. The usefulness surfactant polymer (SP) mobilizing in...

CO2 convective mixing in water has been visualized Hele-Shaw and PVT cell experiments but not at the pore scale. Furthermore, a three-phase system (i.e., presence of both oil) visually investigated. A vertically placed micromodel setup was used to visualize 100 bar 50 °C, representative reservoir conditions. To best our knowledge, for first time, we have investigated scale also multiphase (wate...

Low-salinity water flooding has become one of the major emerging enhanced oil recovery techniques where lower salinity is flooded into a hydrocarbon reservoir in order to increase recovery. It’s been widely reported that wettability alteration from oil-wet water-wet low-salinity process improves Many factors control system wettability, however, role and intensity each factor not completely unders...

This paper discusses a new nuclear magnetic resonance (NMR) method that can provide wettability, saturation, and oil viscosity values in rocks partially saturated with oil and brine. The method takes advantage of two new technological advances in NMR well logging — the MRF Magnetic Resonance Fluid Characterization Method and NMR “diffusion-editing” (DE) pulse sequences. We discuss the principle...

We present a novel methodology for the prediction of three-phase oil relative permeability, kro, through a sigmoid-based model. This modeling choice allows us to incorporate key effects of the pore-scale phase distributions into the proposed effective empirical model for kro. Our sigmoid-based model is able to reproduce: (i) oil remobilization induced by gas injection in water-wet media; (ii) a...

A passive residual heat removal exchanger (PRHR HX) was used as the research object, and an experimental device with conduction oil source set up to complete study of outside tube saturation boiling. The improved Wilson diagram method calculate data, transfer law boiling smooth finned obtained. Compared two types tubes, intensification rate 1.07, that 2.39, 2.23 times tube. According rate, Nu m...

We present a stochastic analysis of immiscible two-phase flow ~Buckley–Leverett displacement! in heterogeneous reservoirs. Since the detailed spatial variabilities of reservoir properties such as permeability and porosity cannot be described deterministically, both permeability and porosity, or either, are treated as random space functions. In turn, water saturation and oil production rate are ...