The study of regularities of distribution of reservoir parameters

The parameters of reservoir should be specified in order to calculate hydrocarbon reserves. In particular, the uncertainty of reservoir parameters occurs mostly in the new areas. Thus, for the geological substantiation of reservoir parameters in these areas an analogy method is used. However, in the geological substantiation of reservoir parameters with analogical approach, it is essential to use the data on the field development in adjacent territories not in numerical order, but considering the distribution regularity. Such an approach allows specifying the uncertainty degree of reservoir parameters in the calculation of hydrocarbon reserves of the fields. The distribution regularities of reservoir parameters have been studied by the horizons in the fields of South Caspian Basin that has a great significance for the update of hydrocarbon reserves of the fields, for the efficiency of field development, as well as for the specification of the ways of reducing geological risks. Therefore, for the calculation or update of hydrocarbon reserves of the fields in South Caspian Basin, the statistical limits of reservoir parameters (maximum, minimum, mode etc.) and distribution regularities (normal, lognormal) have been studied. This paper may be used not only in the South Caspian, but in other oil-gas basins of Azerbaijan as well.