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Diagenetically complex reservoir evaluation (view source)
Revision as of 15:29, 16 January 2014
, 15:29, 16 January 2014→Stage 4. Preparation of an integrated geological model
===Stage 4. Preparation of an integrated geological model===
===Stage 4. Preparation of an integrated geological model===
Following generation of the separate depositional and diagenetic models, data from these models must be merged to form an integrated geological model. To do this, the geologist must examine the two independent models and extract those factors that constitute the major controls on porosity, permeability, and hydrocarbon saturation. It may be useful to perform statistical analysis on the data using techniques such as correlation coefficient calculations, univariate regression, and cluster analysis, or multivariate techniques such as discriminant analysis and stepwise regression (see Part 8).
Following generation of the separate depositional and diagenetic models, data from these models must be merged to form an integrated geological model. To do this, the geologist must examine the two independent models and extract those factors that constitute the major controls on porosity, permeability, and hydrocarbon saturation. It may be useful to perform statistical analysis on the data using techniques such as correlation coefficient calculations, univariate regression, and cluster analysis, or multivariate techniques such as discriminant analysis and stepwise regression (see [[Integrated computer methods]]).
In some fields, it may be necessary to prepare separate structural and formation fluid models in addition to depositional and diagenetic models (Figure 2). In most reservoirs, however, structural and formation fluid factors are not the major controls on fluid flow behavior, and the heterogeneities observed can be incorporated into the diagenetic model.
In some fields, it may be necessary to prepare separate structural and formation fluid models in addition to depositional and diagenetic models (Figure 2). In most reservoirs, however, structural and formation fluid factors are not the major controls on fluid flow behavior, and the heterogeneities observed can be incorporated into the diagenetic model.