... patterns, with different pores structures, were etched on glass surfaces. In addition, a validated numerical model based on laboratory data was developed to carry out some sensitivity analysis of different parameters which were difficult to perform on experimental setup. The results confirmed...

... reservoir fluid phases, possibly oil, gas, and water, might move through the same pores. One phase might move upward while the others move countercurrently downward, or vice versa, in the same pores. If such a mechanism were valid, Darcy s Law could be applied over large areas of the reservoir to provide...

... fluid compatibility pressure gradient mechanism permeability upstream oil & gas surfactant concentration emulsion injection chemical treatment blockage experiment porous medium reduction oilfield chemistry emulsion rock/fluid interaction concentration pore throat fluid...

... spectral porosity distribution that includes signal from hydrocarbons. Interaction of the formation fluids with pore surfaces can significantly influence relaxation response hence, a good knowledge of reservoir geology and lithology is a requirement for interpretation in carbonate reservoirs...

... interpretation of the NMR spectra, bound water T2cutoff values were obtained. Water distribution in different pore sizes during the experiments was also calculated. The initial imbibition rate in different pore sizes was measured. Empirical equations from the literature, which were used to describe the behavior...

... recovery, and production gas-oil ratio. We studied the mechanism of bubble growth in an etched glass micro-model of porous media with concomitant network modelling. Bubble growth from sizes smaller than a pore to the sizes covering several pores is investigated. Movements of the gas-liquid interfaces...

... Abstract Western Canada contains significant deposits of oil and gas in carbonate formations. Carbonates have fairly complicated pore structures with various types of porosity, thus the characterization of carbonates still remains a daunting task. Conventional log analysis of carbonates often...

... single-porosity model was developed for homogeneous sandstone reservoirs. It can handle fluid drift but fails to model the dead-end porosity that is typical of carbonate reservoirs. Conversely, Deans double-porosity model allows transfer of tracers between the flowing and non-flowing pores but cannot...

... in progressively smaller pores. The location of the amplitude peaks in NMR spectra can be used to infer sample wettability 11 . While this has been done in porous media such as sandstones, carbonates and chalk 12–15 , no work has been done on soils. NMR can be a viable tool for assessing soils wettability because...

... waterflooding residual oil gas bubble upstream oil & gas oil channel pore oil layer injection gas injection method oil saturation displacement enhanced recovery gas phase wag cycle mechanism saturation water injection initial waterflood micromodel oil recovery water...

... field NMR is an emerging technology that shows great promise in rock characterization. In a single NMR experiment, information on porosity and pore size distribution of a carbonate sample can be determined. In this paper, low field NMR technology is investigated for determining primary and secondary...