The constitutive relation that describes the amount of nonwetting ̄uid phase entrapment is critical to the modeling of multiphase ̄ow in porous media, but it has received insucient attention in the literature. We studied this relation using both experimental and modeling approaches: we used a nondestructive, X-ray monitored, long-column experiment that yielded a rich data set for two di€erent p...

Natural gas injection is considered for enhanced oil recovery (EOR) in a high saturation pressure reservoir block B111 of the Dagang oilfield, China. To investigate interaction characteristics injected natural and crude oil, ability dissolution–diffusion miscibility–extraction was tested using piece high-temperature high-pressure PVT equipment. The physical properties minimum miscible (MMP) gas...

cally, water is assumed to be immobile at the residualwater saturation. In the petroleum industry, the residAt many contaminated sites, nonaqueous phase liquids (NAPLs) ual-water saturation is also called the irreducible-water persist in the vadose zone for long periods of time. This occurs because the permeability of the NAPL becomes negligible at some saturation saturation. This terminology h...

In this study, nanoparticle stabilized foam experiments were performed in bulk tests, micromodels, and sandpacks at elevated temperatures and pressures to investigate the flow behavior and displacement mechanisms for enhanced heavy oil recovery. The results from the bulk tests showed that the stability of the foam and oil in water (O/W) emulsion improved when silica nanoparticles (SiO2) were ad...

This study investigated the hydrocarbonoclastic microbial community present on weathered crude oil and their ability to degrade weathered oil in seawater obtained from the Gulf St. Vincent (SA, Australia). Examination of the native seawater communities capable of utilizing hydrocarbon as the sole carbon source identified a maximum recovery of just 6.6 × 10 1 CFU/ml, with these values dramatical...

The pore-throat radius of the shale oil reservoir is extremely small, and it difficult to accurately obtain absolute permeability oil–water two-phase relative actual through conventional core experiments. However, these parameters are very important for numerical simulation. In this paper, a method characterizing flow based on pore network model that considers differential pressure diffusion pr...

If information is stored as activity-driven increases in synaptic weights in the hippocampal formation, saturation of hippocampal long-term potentiation (LTP) should impair learning. Here, rats in which one hippocampus had been lesioned were implanted with a multielectrode stimulating array across and into the angular bundle afferent to the other hippocampus. Repeated cross-bundle tetanization ...

Screening of lipolytic strains using Rhodamine-B/olive oil plate technique allowed the selection of Aspergillus niger MYA 135. Lipase production in submerged culture containing 2 % olive oil was enhanced by more than 50 % compared to basal cultural conditions. Optimal catalytic conditions for olive oil-induced lipase were pH=6.5 and 30–35 °C. These values were shifted to the acid region (4.0–6....

In this paper, the role of molecular diffusion in mobilization of waterflood residual oil is examined. A moving mesh method is applied to solve the moving interface problem of residual oil blobs swelling by Co2 diffusion through a blocking water phase. The results of this modeling are compared with experimental results of a 2D glass micromodel experiment. Although, the solution method is applie...