Geostatistics in Petroleum Industry

Prospection and exploitation of hydrocarbon fields need a large quantity of data and sophisticated processings. Geostatistics and in particular “kriging”, bring an important contribution to working out a satisfactory subsurface model. In practice it is necessary to have a data processing tool for implementing the techniques of kriging and structural analysis, at the various phases of exploration and production (no matter what the variables are). Several complete studies using such a program are presented in this paper: estimation of seismic variables at the major phases of exploration, estimation by layers of the reserves of an oil field, estimation by grid blocks of the reserves of a gas field.