... opening ratio did ( Imqam, 2015a , 2015b ). Abstract Excess water production through fractured reservoirs is one of the most serious problem for sweep efficiency and oil recovery factor. Gel treatment have been widely used to plug the fractures and reduce excess water production to improve...

.... The flow rate was 0.5 ml/min. HS water was injected into the cores until residual oil saturation (Sor) was reached. After maximum oil recovery with HS, LS water was then injected until no more oil was produced and injection pressure stabilized. The new combined technology was conducted by four scenarios...

... breakthrough experiment saturation gas breakthrough Upstream Oil & Gas total foam injection rate surfactant reservoir enhanced recovery pressure drop recovery performance foam chemical flooding methods supercritical condition Oil Recovery foam quality foam flooding exp...

... nanoparticle nanoparticle Upstream Oil & Gas droplet crude oil characterization emulsion formation brine salinity nm calcite nanoparticle diw emulsion droplet nanoparticle size Oil Recovery Introduction The oil and gas resources are depleting worldwide and there is a high demand...

... chloride (NaCl) was used to prepare the brine. Mineral oil: A light mineral oil was used. The oil had the following properties: API: 36°, density: 0.845 g/cc, and viscosity: 37 c.p. Sandstone rock: Berea sandstone was obtained in the cylindrical form. Abstract The oil recovery from...

... Abstract The latest oil price decline simply increases the demand for enhanced oil recovery (EOR) and pushes research developers to keep improvements in oil recovery. The goal is always to recover as much oil as possible at the lowest possible cost. Low-salinity water flooding (LSWF) is an EOR...

... experiment ultimate recovery wettability light oil injection reservoir base case Oil Recovery Introduction Viscosity reduction in heavy-oil recovery is achieved by thermal or solvent injection methods. The former may not be efficiently applicable in thin and deep reservoirs. Although full...

... surfactant injection equation enhanced recovery adsorption viscosity saturation cumulative production comparison conformance improvement reservoir enhanced oil recovery Upstream Oil & Gas Efficiency polymer flooding SMA society of petroleum engineers oil recovery Introduction...

... that control the efficiency of water-flooding. Admittedly, wettability alteration of parts of the rock surface from oil-wet to water-wet has been suggested as the primary mechanism for increased oil recovery during low salinity waterflooding in carbonate reservoir. Strand, Standnes et al. (2006) talked about...

...Results and Discussions There is increasing evidences that Smartwater flooding, through tuning of injection water chemistry and ionic composition, has a significant impact on reservoir wettability and on the recovered oil. This approach can potentially provide higher ultimate oil recovery...

... chemistry partially determines the dominant wettability alteration. This includes salinity, type of ions, and possibly pH. The effect of the potential determining ion towards sandstone ‘calcium ion’ is presented in this work. The ultimate oil recovery for the core saturated in normal Ca 2+ concentration...

... The laboratory experiments have shown that LS water flooding can change the wettability toward a more water-wet state. As the salinity of the injected water decreases the oil recovery increases. The experimental observation for Tang and Morrow (1999) suggested a couple of chemical mechanisms...

... the recovery of extra oil ( Novosad et al., 1984 ). Overall, surfactant flooding objective is to increase the capillary number. Capillary number is the ratio of viscous forces to the interfacial forces. If there is a possibility to reduce the surface tension to zero then theoretically the oil recovery becomes...

... microstructure differential pressure permeability high temperature Fluid Dynamics polyacrylamide core plug enhanced oil recovery society of petroleum engineers Oil Recovery nanocomposite gel temperature reservoir INTRODUCTION Water production in oil/gas wells can be a limiting factor when...

... system thickener concentration chemical flooding methods experiment low permeability reservoir reservoir flooding pressure flow in porous media flooding system sweep efficiency core flooding experiment Oil Recovery Introduction The highly efficient development of oil is a major demand...

... and improved oil recovery by using streamline-based flux information to adjust well rates, while retaining the advantages of rigorous finite volume simulation. We have introduced two basic modules here: a commercial reservoir simulator Eclipse and our own streamline tracing and waterflood management program...

... as compared to that of HM. LM is more conducive to the stability of the emulsion system owning to more hydrophobic group and better emulsion viscoelastic properties than the HM emulsion. Oil recovery efficiency of the LM reaches 54%, 5% higher than that of the HM, which indicates that the LM is more conducive...

... Abstract Low-permeability tight reservoirs have been undergoing extensive development in petroleum industry in recent years. Waterflood has been used as oil recovery process of these reservoirs. Different types of fractures such as hydraulic fractures, natural fractures, and water injection...

... surfactant 10 surfactant enhanced oil recovery PPM solubility application reservoir Kamal chemical flooding methods proton stability hydrophobic tail cationic surfactant Oil Recovery thermal stability gemini cationic surfactant Introduction Crude oil is the biggest source to produce...

... is found to be a cost effective and resulted in very significant incremental oil recovery when applied after the conventional seawater-flooding, and could be used as an alternative to the conventional and low salinity waterflooding. The used chemicals are environmental friendly, stable at high salinity...