... sand. Low field NMR was used to acquire spectra of the migrating solvent in bitumen or oil sand as a function of time. The experimental results of this work along with data collected previously on similar systems in our laboratory were fit together in a one dimensional Fickian model. The novelty...

... Abstract Mass transfer mechanisms in VAPEX and estimation of diffusion and dispersion coefficients of solvents into bitumenare popular subjects in heavy oil and bitumen research. In previous work, it was shown that low-field NMR could be used as a useful tool in determining diffusion...

... Abstract Diffusion plays an important role in both VAPEX and Solvent Injection processes for oil/bitumen recovery. In this paper, X-ray CAT scanning and low field NMR have been used to obtain experimental data for the diffusion of several solvents in bulk bitumen. Low field NMR has been used...

... technique in oil sands mining. Mass transfer between solvent and bitumen is a poorly understood process. In some cases it is totally ignored compared to viscous force effects. In some other cases, phenomenological estimations of diffusion and dispersion coefficients are used. Low field NMR has been used...

..., but this work demonstrates that low field NMR can be a valuable tool even in these reservoirs. The data set for this experimental work consists of a large collection of core samples from many different fields in Canada. NMR spectra interpretations have been compared to other core analysis methods. Definite...

... to produce. In these reservoirs, oil viscosity is a vital piece of information that will have great bearing on the chosen method of recovery. Prediction of in situ viscosity with a logging tool can be benefitial in reservoir characterization and exploitation design. Low field NMR is a technology that has...

... of severity. Conventional flow measuring devices are capable of measuring oil and water streams when they are segregated but they fail when oil-in-water or water-in-oil emulsions form. Conventional methods are also not reliable when there are solids flowing in the stream. Low field NMR relaxometry...