A typical Iranian carbonate matrix block surrounded by an open fracture was modeled in order to understand the fracture-matrix interaction and realize how to model the interaction best. The modeling was carried out by using a fine-scaled Eclipse model in the single porosity mode (the fractures were explicitly modeled). The model was extended to a stack of 6 matrix blocks to understand block-to-...

Few people would deny that the world runs on oil. Oil, regarded as the blood of industry, may cause economic crises, and even lead to conflicts and wars. Three applicable models and several feasible policies are presented to settle the problem. We devise the Irreversible Depletion Model, and use global statistics data in logistic regressions to predict the total ultimate oil recovery. Relying o...

In this study, a chemical additive made by a combination of polymer, alkaline, and silica nanoparticles is used to control the oil recovery and relative permeability curves. Various parametersincluding the type and concentration of polymer, alkaline, and nanosilica particles have been studied.To evaluate the efficiency of these additives, we performed unsteady state displaceme...

A variety of methods are examined in this study order to improve oil recovery from low-permeability heterogeneous reservoirs oil-saturated shale deposits. Calculations based on the fluid flow model revealed that water and gas injection was effective, horizontal directional wells, including those employing hydraulic fracturing evaluated study. Moreover, wells with vertical completions found be o...

Oil spills from offshore drilling and coastal refineries often cause significant degradation of coastal environments. Early oil detection may prevent losses and speed up recovery if monitoring of the initial oil extent, oil impact, and recovery are in place. Satellite imagery data can provide a cost-effective alternative to expensive airborne imagery or labor intensive field campaigns for monit...

abstract the present study was carried out to investigate the efficacy of two anesthetics, clove oil and ketamine, comparison of hematological parameters, and blood biochemical indices under optimum doses of the two anesthetics in juvenile sterlet acipenser ruthenus (n=276) with an average weight of 64.1 ± 3.4 g. clove oil was used in concentrations of 14, 35, 56, 77, 98 and 119 mg/l, and those...

Abstract: Enhanced foam flooding is a chemical flooding technology, which is applied to improve the recovery efficiency of oil and gas. The oil displacement agent of enhanced foam flooding is a foam that the polymer and surfactant solution as liquid. In this paper, three-dimensional mathematical model of unsteady flow is established about enhanced foam system in the porous media, and the numeri...

BACKGROUND Lipopeptides are known as promising microbial surfactants and have been successfully used in enhancing oil recovery in extreme environmental conditions. A biosurfactant-producing strain, Bacillus atrophaeus 5-2a, was recently isolated from an oil-contaminated soil in the Ansai oilfield, Northwest China. In this study, we evaluated the crude oil removal efficiency of lipopeptide biosu...