Sedimentary flow units in hydrocarbon reservoirs: Some shortcomings and a case for high-resolution permeability data

Accurate definition of sedimentologically-defined flow units is often central in the successful modelling of reservoir performance and reliable economic predictions. Inappropriate reservoir simulation models may be generated because the dimensions and characteristics of flow units are defined inadequately. Laboratory probe permeametry provides data which may alleviate such problems, since it identifies and quantifies sedimentary heterogeneities which are unresolved by conventional data. For example, net sand is defined directly using permeability data, and a closer relationship is made between sedimentary characteristics and quantitative data.