History matching deltaic reservoir models controlled by realistic sedimentological prior information

Temistocles Simon Rojas, Vasily Demyanov, Michael Andrew Christie, Daniel Arnold

Research output: Contribution to conferencePaper

Abstract

The generation of multiple reservoir models that match production data is one of the advantages of automatic history matching (AMH). Including facies geometry variations within the AHM process without the modeller control, could result in the selection of reservoir models that match production data but lack
of sedimentological realism. These unrealistic models will cause problems in production forecasting and reserves estimation. In this work, a technique is proposed to guarantee sedimentological realism within the AHM process.
Building realistic prior models that describe the non-linear dependencies between sedimentological parameters of deltaic systems can prevent the development of geologically unrealistic models. Multidimensional priors were generated using One-Class Support Vector Machine. This technique captures
hidden relations of deltaic parameters: Delta Plane, Distributary Channel and Mouth bar dimensions. Variables were sampled from the realistic priors in order to assure facies realism. A Multiple Point Statistics (MPS) algorithm is used to model facies in a deltaic reservoir. History-matched models produced
under geological realistic constraints reduce uncertainty of the production prediction, ensures the realism of the selected reservoir and also helps in the identification of the reservoir geometry.
Original languageEnglish
Pages1-5
Number of pages5
DOIs
Publication statusPublished - Jun 2014
Event76th EAGE Conference and Exhibition 2014 - Amsterdam, Netherlands
Duration: 16 Jun 201419 Jun 2014

Conference

Conference76th EAGE Conference and Exhibition 2014
CountryNetherlands
CityAmsterdam
Period16/06/1419/06/14

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