the chemical surfactant flooding can mobilize the trapped oil by lowering the interfacial tension between oil and brine and in some cases altering the reservoir rock wettability. in this work, the effect of surfactants on oil/brine interfacial tension was experimentally investigated. first, the effect of surfactants concentration was surveyed. afterwards, the effect of salinity on surfactant be...

CO2 flooding is recognized as an efficient method for enhancing shale oil recovery, while CO2-oil MMP (minimum miscibility pressure) in the micro-nanoscale a crucial parameter. This paper presents calculating MMPs of pure hydrocarbons (C4H10, C6H14, C8H18, and C10H22) systems nanopores (3 nm to 10 nm) with temperature ranging from 290.15 K 373.15 K. Firstly, we modify Peng-Robinson equation sta...

Rhamnolipid as a potent natural biosurfactant has a wide range of potential applications, including enhanced oil recovery (EOR), biodegradation, and bioremediation. Rhamnolipid is composed of rhamnose sugar molecule and beta-hydroxyalkanoic acid. The rhamnosyltransferase 1 complex (RhlAB) is the key enzyme responsible for transferring the rhamnose moiety to the beta-hydroxyalkanoic acid moiety ...

Microemulsions are dispersions of water and oil stabilized by one or mixtures of surfactants. The key differentiators from other dispersions are: (i) domain size of the dispersed phase is of the order of 5-100 nm in size (Schulmann et al., 1959); (ii) thermodynamically stable (Zana, 1994), and (iii) optically isotropic (Danielsson and Lindman, 1981). Commonly observed structures are: oil in wat...

The transformer is the most critical apparatus in electric power network. Reliable operation of it foremost concern for a proficient supply. Therefore, vital to safeguard so that functions at its highest capacity. In order achieve it, an improvement insulation system necessary, as majority faults transformers are due malfunctioning system. Petroleum-based oils extensively used insulating liquid...

One of the tertiary methods for enhanced oil recovery (EOR) is the injection of chemicals into oil reservoirs, and surface active agents (surfactants) are among the most used chemicals. Surfactants lead to increased oil production by decreasing interfacial tension (IFT) between oil and the injected water and to the wettability alteration of the oil reservoir rock. Since surfactants are predomin...

the aim of this research is to investigate the effect of carbon fiber reinforced polymer (cfrp) composite fabric on monotonic and fatigue behaviors of reinforced concrete beams. to control the failure occurrence, a small notch was induced at the middle span in bottom surface for all of the studied rc specimens. totally 12 beams were tested from which 6 beams tested under monotonic and 6 other t...

Injecting and storing of carbon dioxide (CO2) in deep geologic formations is considered as one of the promising approaches for geologic carbon storage. Microbial wettability alteration of injected CO2 is expected to occur naturally by microorganisms indigenous to the geologic formation or microorganisms intentionally introduced to increase CO2 storage capacity in the target reservoirs. The ques...

Rock wetting behaviour and CO2/brine interfacial tension (IFT) have significant impacts on enhanced hydrocarbon recovery (EOR) carbon geo-sequestration (CGS) projects. Influence of nanoparticles/surfactant solutions (NPS) flooding EOR CGS in sandstone carbonate formation been examined recent studies. But the impact NPS dioxide (CO2) methane (CH4) wettabilities organic-rich shale IFT is presentl...

A small concentration of organic acid in carbon dioxide (CO2) storage formations and caprocks could significantly alter the wettability such into less water-wet conditions, decreasing CO2-storage potential containment security. Recent studies have attempted to infer influence on rock–CO2–brine systems by measuring advancing receding contact angles. However, no investigated contamination capacit...