... wettability and to significantly lower the interfacial tension (IFT) between aqueous and oleic phases. Additionally, the advantages of starting the SWAF process early on in the initial stage of the injected scheme (starting SWAF process from the secondary mode) generates incremental production in early stage...

... the mechanisms that prevent water from penetrating into core samples with low permeability, and suggest chemicals that can help overcome this problem. Complexes of different surfactants, polysurfactants, nanoparticles with modified surface were investigated. Wettability, interfacial tension measurements...

... Abstract Subsurface reservoir wettability is of vital importance in the prediction of CO 2 trapping capacity and containment security. However, quantifying the effect of reservoir wetting behavior on CO 2 sequestration potential in heterogeneous reservoirs remains to be challenging...

... Abstract Trapped gas saturation (Sgt) is an important parameter for both CO2 storage (CCS) and Enhanced Oil Recovery (EOR) processes. Trapped gas saturation is affected by different parameters such as rock typing, wettability, saturation history, sequence of water and gas injection cycles, etc...

.... The quantitative test results matched closely Arab formation SCAL published data. It was determined that multi-mineralic grainstones undergoing waterflood likely experience contemporaneous imbibition and drainage, giving rise to complex multiphase flow due to the existence of different states of wettability...

... Abstract Oil recovery by low salinity waterflood is significantly affected by fluid-fluid interaction through the micro-dispersion effect. This interaction influences rock wettability and relative permeability functions. Therefore, to gain a better insight into multiphase flow in porous media...

.... We critically analyzed and discussed theses CDC studies based on capillary number, Bond number, and trapping number ranges. The effect of different factors on CDC were further investigated including interfacial tension, heterogeneity, permeability, and wettability. This comparative review shows...

... the low-salinity effect was limited in our crude oil/brine/rock system, and find the key successful factor. Among many mechanisms proposed in the literature, we have focused on the following four scenarios: The initial wettability was not sufficiently oil-wet for low-salinity effect...

... water injection. This effect comes from the fact that Low salinity water tends to change the chemical equilibrium that takes place between brine, oil and rock surface leading to an alteration for the system wettability. It was found that low salinity water tends to alter the original wettability...

... Abstract Relative-permeabilities are a first-order parameter to consider when describing multiphase-flows in porous media. Among many other parameters, the core wettability controls the fluids repartition in the porous media at pore-scale, strongly affecting how the fluids can be displaced (i.e...

... Abstract The chemistry of injection water affects oil recovery from carbonate reservoirs by SmartWater flooding. It is widely believed that the ions present in the SmartWater alter the wettability of carbonate rocks, depending on their type and the amounts present. Although some effort has been...

... Abstract Oil-water relative permeability and capillary pressure are key inputs for multiphase reservoir simulations. These data are significantly impacted by the wettability state in the reservoir and by the pore space characteristics of the rock. However, in the laboratory, there are several...

... the elevated impacts the wettability and pore structure characteristics on the spatial distribution of the fluids in these rocks. The type of clay content in the bedding planes and its consequent interaction with the drilling mud was identified as a potential driver of the rock instability problems...

... EOR cases were investigated; low salinity water-flooding, surfactant flooding and polymer flooding. For low salinity water-flooding, the wettability of pore walls was changed to be more water-wet than that of the base case. For surfactant flooding, the interfacial tension was reduced. For polymer...

..., and porosity, permeability, and wettability, which are critical to reservoir interpretation and development. A customized high-performance water-based mud (HPWBM) was used successfully where prior attempts with conventional water-based mud (WBM) had failed. The key well challenges included wellbore...

... Abstract A novel method is presented to characterise in situ three-phase flow, including wettability, pore occupancy and displacement mechanisms, at the pore scale. We used X-ray microtomography to obtain 3D images of a carbonate reservoir rock saturated with crude oil and formation brine...

... Abstract Extraction of oil from wells is hampered by the fact that oil sticks to rock surfaces and water does not pry it loose easily. Technically, this is an issue caused by the relative wettability of rock surfaces. Experiments have shown that Na ions that are present in sea water have...

... distinct stages of validation are described beginning with idealized 2-phase benchmark studies, progressing to physical micromodel experiments with a range of wettabilities, physical flow experiments in 3D grain packs with differing wettabilities, trapped gas measurement on sandstones with demonstrated...

... incorporate experimental capillary pressure data into mathematical models it is useful to implement correlations rather than lookup tables. This also allows variations in lithology, wettability etc. to be systematically varied by changing correlation parameters rather than interpolating between numerous...

... the effects (sensitivity) of interfacial tensions, contact angles, wettability, spreading coefficient, balance of viscous and capillary forces into miscibility on the oil layers between gas and water in a fully interconnected three-phase flow pore-network model. Utilize thermodynamic criteria for rock...