... Abstract Wettability alteration significantly impacts the adsorption of oil on rock surfaces and capillary pressure, which in turn can enhance oil recovery, particularly from unswept regions such as dead-end pores, narrow pore throats, and low permeability rock matrices. Various materials have...

... recovery cr 2 oil-water interface injection concentration lsw sohrabi wettability alteration Introduction Low salinity water (LSW) flooding enhanced oil recovery (EOR) has been getting more remarkable attention because of one of low investment options simply extending the existing water...

... (engineered water) and surfactants injection. This study features an experimental evaluation of engineered-water-surfactant (EWS) performance in wettability alteration of oil-wet carbonate having high salinity formation water (196 g/L) and moderate temperature (75 °C), representative of an actual Omani...

..., upon reducing the salinity from 196 to 19.6 g/L. Further reduction of salinity resulted in no wettability alteration and the calcite surfaces remained oil-wet. It was found that the positive effect of increasing rock dissolution, by decreasing salinity, in reducing oil-wetness is opposed...

... Abstract This paper presents the feasibility of the application of ion-modified water for enhanced oil recovery (EOR) in low permeable carbonate reservoir with ultra-high salinity of more than 220000 mg/L. Influence of different ions on wettability alteration, interfacial tension (IFT), scale...

... manipulation is the main driving mechanism behind wettability alteration observed in controlled ionic composition waterflooding (CICW) processes. Therefore, investigation of electrokinetic interactions at both brine/calcite and brine/crude-oil interfaces is important to optimize the injection water...

... scales. Also we experimentally studied the effect of soaking time after the shock on wettability alteration and improvement in recovery by re-injection of high salinity normal brine. Characterization tests such as contact angle measurement confirmed the effect of shock/soaking on alteration of governing...

... interactions occurring at the fluid/fluid and fluid/rock interfaces. Most of the laboratory studies reported so far have been focused on characterization of crude oil/brine/carbonate system and wettability alteration at micro- and macroscale using classic measurements, including contact angle, IFT, NMR, zeta...

... imbibition experiments were performed to evaluate initial wetting and wettability alteration from two dolomitic reservoir systems. A fractured reservoir system at 65 °C was investigated by spontaneous imbibition tests, while a non-fractured system at 115 °C was investigated by forced imbibition tests...

... is to identify the key mechanisms responsible for the improved performance of surfactant formulations and to characterize the interactions that can induce imbibition into an originally mixed-wet, tight, hydraulically fractured shale reservoir via laboratory evaluations. Wettability alteration formulations...

... recoveries of SmartWater in both secondary and tertiary modes. Single-well chemical tracer tests have demonstrated this potential in the field at a scale larger than those examined in the laboratory. Still, the underlying mechanisms responsible for SmartWater wettability alteration of carbonates are not well...

... on the tertiary recovery. To investigate the effect of salinity changes on fluid-fluid interactions, IFT measurements between crude oil and different brine salinities were carried out at reservoir temperature. Also, effects of LSW (different dilutions) on the wettability alteration were examined by performing...

... steam injection Mauddud reservoir distillate recovery SAGD drawdown recovery bb interval saturation injection producer wettability alteration reservoir residual oil saturation oil saturation ba interval gas injection temperature observation well Steam flood Introduction...

... composition could considerably increase oil recovery. waterflooding enhanced recovery Upstream Oil & Gas concentration SSB smart brine experiment wettability alteration interface Brine salinity rock surface carbonate reservoir smart water alteration seawater reservoir non-active ion...

... a modified water composition for injection. enhanced recovery coreflood contact angle Modeling & Simulation relative permeability salinity wettability alteration waterflooding Yousef experiment permeability curve cycle 0 relative permeability curve Chandrasekhar mohanty Upstream Oil...

... components and surface active agents in DESs give them high potential for application in heavy oil recovery. In this work, we experimentally investigate the effects of two DESs on the main mechanisms of heavy oil recovery including emulsification, IFT reduction, wettability alteration, spontaneous...

... saturation reservoir oil recovery potential precipitation interaction oil recovery relative permeability wettability alteration spe Introduction EOR (tertiary recovery) is a process to recover the oil left behind after primary and secondary recovery methods. There are many applied EOR...

... findings include: The recovery mechanism study confirmed that wettability alteration is the main cause for substantial increase in oil recovery observed in reported coreflood experiments. The significant alteration was observed with twice diluted seawater and also 10 times diluted seawater...

... of the previously suggested mechanism and the effect of the ionic double layer at the rock–brine interface. ionic composition ooip wettability alteration waterflooding austad crude oil enhanced recovery smart water recovery water-wet fraction spontaneous imbibition carbonate reservoir enhanced oil...