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improved! method for determining the physical parameters of a sample subjected to centrifugation.
improved! method for determining the physical parameters of a sample subjected to centrifugation.
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机译:改善了!确定离心样品的物理参数的方法。
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摘要
A method for faster determination of physical parameters (capillary pressure curves and relative permeabilities for example) of a geologic sample initially saturated with a first fluid placed in a vessel and subjected to centrifugation in the presence of a second fluid. The equilibrium saturations are determined before complete stabilization is reached through analytic modelling involving exponential functions, best adjusting to an effective production curve, for each speed stage. A database, obtained by means of various simulations, is used to obtain the relative permeability curves corresponding to the centrifuged sample. The method can be applied for measurement of petrophysical characteristics.
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