Method for parameterizing and morphing stochastic reservoir models

A method for creating a modified realization of a geostatistical model of a subterranean hydrocarbon reservoir is described, which may be used in a history matching process. The modified realization is based on a current realization which is a function of a first uniform random number field. At leas...

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Bibliographic Details
Main Authors HU LIN YING, LIU YONGSHE
Format Patent
LanguageEnglish
Published 27.01.2015
Subjects
CALCULATING
COMPUTING
COUNTING
DETECTING MASSES OR OBJECTS
ELECTRIC DIGITAL DATA PROCESSING
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:A method for creating a modified realization of a geostatistical model of a subterranean hydrocarbon reservoir is described, which may be used in a history matching process. The modified realization is based on a current realization which is a function of a first uniform random number field. At least one further uniform random number field Ui is created and a linear combination made of the first uniform random number field and the further uniform random number field or fields Ui, together with combination coefficients ri, to derive a modified non-uniform random number field V. A uniform score transformation procedure is then performed, e.g. using an empirical cumulative distribution function, on the modified non-uniform number field V, to derive a modified uniform random number field Umod. A modified realization of the model can then be derived from the uniform random number field Umod.
Bibliography:Application Number: US201113271727