Polymer flood gains expansive popularity as a promising EOR method in various oilfields worldwide. However, there are still substantial amount of resources underground after polymer application. To further enhance oil recovery, secondary chemicals are sometimes utilized to sweep the remaining hydrocarbons to maintain the consistent development of oilfields. In this paper, a series of experiment...

Microbial flooding is a new enhanced-oil-recovery technology for the petroleum industry. In this study, strain of Bacillus subtilis named SL-2 was isolated from oil-well-produced fluid. B. produces lipopeptide surfactin. The fermentation broth contains biosurfactants (1.2 g/L) with good surface and interfacial activities. Adding 7% to water reduces its tension 72 33.9 mN/m between hexadecane 40...

core flooding experiments were conducted with the objective of evaluating near miscible surfactant alternating co2 injection and the effect of surfactant concentrations on gas-oil and water displacements in porous media. the core samples were provided from a low permeability mixed wet oil reservoir at 156 °f and 1900 psia. in addition, very few studies of surfactant adsorption on carbonate mine...

The paper describes a simulation system to support emergency planning decisions when ship flooding occurs. The events of grounding and collision are considered, where the risk of subsequent flooding of hull compartments is very high, and must be avoided or at least minimized. The system is based on a highly optimized algorithm that estimates, ahead in time, the progressive flooding of the compa...

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...

In ASP (Alkali-Surfactant-Polymer) flooding processes, surfactants help to enhance oil recovery by lowering the interfacial tension between the oil and water. However, due to the high cost of surfactants and the stability of the emulsion that varies with surfactant concentration, it is necessary to optimize the surfactant concentration in ASP flooding. In this study, we combined numerical simul...

Abstract Steam flooding is an effective method to enhance oil recovery in heavy reservoirs. However, the influence factors of steam will affect development reservoir after traditional water flooding. So dynamic prediction needs be performed before scheme implemented. In this study, 3D model was established by numerical simulation software CMG; Combined with operating parameters oilfield, temper...

In this study, the multiphase multicomponent Shan-Chen lattice Boltzmann method is employed to analyze impact of capillary force on oil-CO2-water fluid flow and enhanced oil recovery. Various sizes single throat are designed simulate interaction between displacing displaced phases as well their mechanical equilibrium. Several sensitivities taken into account, such wettability, miscibility, inte...