fractional flow analysis confirms the advantages of surfactant alternative gas injection (sag) in enhanced oil recovery, but an adsorption phenomenon that has been affected by several factors, weakens the effectiveness of sag injection. in this study, the effects of sacrificial agent, gas phase, and surfactant concentration on adsorption density on silica mineral were investigated by static and...

With proteinaceous-liquid flooding of discrete alveoli, a model of the edema pattern in the acute respiratory distress syndrome, lung inflation over expands aerated alveoli adjacent to flooded alveoli. Theoretical considerations suggest that the overexpansion may be proportional to surface tension, T. Yet recent evidence indicates proteinaceous edema liquid may not elevate T. Thus whether the o...

The objective of this study is to discover a synergistic effect between foam stability in bulk and micro-emulsion phase behaviour to design a high-performance chemical system for an optimized alkaline-surfactant-foam (ASF) flooding for enhanced oil recovery (EOR). The focus is on the interaction of ASF chemical agents with oil in the presence and absence of a naphthenic acid component and in si...

Surfactant flooding can mobilize trapped oil and change the wettability of rock to be more hydrophilic, which increases recovery factor. However, selection surfactants is difficult in case high salinity conditions. In this work, we synthesized three novel anionic-nonionic based on widely used nonionic surfactant nonylphenol polyethoxylated (NPEO) evaluated their efficiencies for enhanced (EOR) ...

The Journal of Clinical Investigation | July 2003 | Volume 112 | Number 2 Introduction Pulmonary surfactant lowers the surface tension at the air/liquid interface in the lung and prevents alveolar instability, small airway closure, and alveolar flooding. Surfactant is composed predominantly of phospholipids, especially phosphatidylcholine and phosphatidylglycerol, and the surfactant proteins (S...

Abstract Different oil displacement experiments conducted on sandstone and carbonate samples show that low salinity water (LSW) injection can reduce the residual saturation (ROS). Recently, surfactant flooding (SF) in combination with (known as (LSS) flooding) is proposed a potentially promising hybrid enhanced recovery (EOR) process. A lower ROS reported for LSS process compared to seen SF or ...