Abstract
Abstract Oilfield development is mainly subject to two kinds of indices: (1) material basis deciding the oilfield development effect (showing index system of geological status of natural reservoir geological features); (2) artificial factors deciding development effect (showing dynamic index system of development level subject to human control). Through multiple correlation analysis, 8 major indices that demonstrate the natural geological features of reservoir have been selected: effective porosity, air permeability, effective sandstone coefficient, initial oil saturation, initial difference between reservoir pressure and saturation pressure, permeability variation coefficient, flow coefficient, unit reserve factor; and 10 major indices that show the development level subject to human control: recovery degree, water flooding index, flow pressure of injector, flow pressure of producer, producer/injector ratio, well spacing density, cumulative water storage rate, volume multiple of cumulative injected water volume, flooding control extent and reserve producing degree. Factor analysis shows: the natural geological features of reservoir include structural factor of reservoir, oil scale factor, oil flow factor; the development level subject to human control includes water injection factor, oil production factor and well control factor.
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