... efficiency in water-flooded heterogenous reservoirs with very high temperature and ultra-high salinity. flow in porous media capillary entry pressure crude oil injection chemical flooding methods fluid dynamics different permeability condition flooding experiment enhanced recovery high...

... laboratory artefacts, long cores were used in the experiments and to observe the effect of gravity both 2-inch diameter and 4-inch diameter (whole core) were used. The experiments were performed under reservoir conditions using live crude oil. The core wettability was restored by ageing the core in crude oil...

... upstream oil & gas scale inhibition flow assurance oilfield chemistry asphaltene remediation remediation of hydrates viscosity emulsion formation damage crude oil asphaltene streaming potential fbhp asphaltene deposition diverse asphaltene challenge asphaltene stability missan oilfield...

... in carbonates, and a new cleaning and restoration protocol is tested to reproduce wettability in carbonate core samples. Two water-wet chalk core plugs were restored with the same initial formation water saturation (S wi =10%), and then were saturated and aged in crude oil to create an initial wetting...

.... concentration residual oil saturation waterflooding clay mineral surface enhanced recovery clay content application upstream oil & gas field trial kaolinite clay content inter-well field trial crude oil low salinity water core flooding experiment reservoir lswf oil recovery Introduction...

..., the adsorption of the selected foaming formulation on reservoir rock using injection water was found to be very low. Long-term foam stability was also confirmed in the presence and absence of crude oil. Based on these results, high foam apparent viscosity is expected in the planned core-flood experiments...

... boosting surfactants to come up with the most adapted chemical cocktail in terms of solubility, IFT with crude oil and foaming properties in hard brine. The selected formulation is then quantitatively characterized for IFT with crude oil, phase behavior with live oil, foam stability in reservoir pressure...

... EOR in Block 9 based on the reaction between alkali and highly acidic crude oil. The static properties and dynamic displacement behaviors of the emulsion were thoroughly investigated. Particular emphasis was placed on the relationship between emulsion stability, droplet particle/pore radius matching...

... rheology, and droplet coalescence times, at elevated temperature to determine the effects of both salinity and individual water ions on different microscopic scale interactions occurring at the crude oil-water interface. In addition the results from microscopy imaging of the interface and zeta potential...

... & Gas concentration Efficiency waterflooding spontaneous emulsion mechanism surfactant crude oil emulsion low permeability reservoir Oil Recovery spontaneous emulsification system enhanced oil recovery stability interfacial tension Introduction In a long period of time...

... concentration injection SP formulation enhanced recovery adsorption membrane separation performance reservoir chemical flooding methods polymer salinity surfactant surfactant concentration target salinity reference synthetic brine crude oil formulation coreflood test composition...

... polymer precipitation concentration composition oil water separation PPM crude oil fouling eor chemical separation water quality membrane brine composition polymer concentration emulsion experiment heat exchanger society of petroleum engineers Introduction Conventional development...

... of in-situ emulsions due to crude oil interaction with drilling and completion fluids, water blockage, asphaltene and paraffin deposition and alteration of near-wellbore wettability. In new wells, near-wellbore formation damage may be caused by emulsion blockages when the whole mud, mud filtrate...

... Abstract To evaluate the feasibility of "Smart Water" injection, reproducing representative initial wettability in laboratory experiments is essential. Experimental studies have confirmed that adsorption of polar organic components from crude oil to the rock surface is a main contributor...

... Chemistry Upstream Oil & Gas crude oil emulsion stability chemical treatment droplet igepal co-530 stable emulsion enhanced recovery fluid compatibility aqueous solution water bath oilfield chemistry rock/fluid interaction crude oil emulsion stability surfactant enhanced oil recovery...

... & Gas hydrophobic group application polymeric surfactant water flooding water cut polymeric surfactant flooding surfactant injection experiment crude oil flooding Oil Recovery Introduction Many field developments show that almost 70% of hydrocarbon remains unrecovered after water...

.... Furthermore, it was clearly observed that the crude oil was uniformly dispersed into small drops. For the hybrid system consisting of 660 mPa's crude oil and 1000 mg/L activator with a mixed ratio of 1:1 by volume, the flowing time measured by kinematic viscometers was reduced to 8 s compared with 340 s...

... Abstract Polymer-flooding is one of the most promising techniques used to increase the productivity of mature oil reservoirs. Polymers reduce the mobility ratio of the injected water relative to the crude oil, improving the displacement of the entrapped oil and, consequently, increasing oil...

... show that for the specific crude oil and reservoir brine utilized in this study highly performing AP formulations are not obtained. The optimal salinity of petroleum soap from the crude oil is lower than the salinity of softened reservoir brine so a low-cost process is not possible without...

... Abstract The objective of surfactant formulation design is to achieve ultra-low interfacial tension (IFT) with the oil in place in reservoir conditions. Several parameters have to be investigated, the presence of dissolved gas in crude oil can greatly impact the surfactant/brine/crude oil...