Fluid geochemistry applications in reservoir engineering (vapour-dominated systems)

Fluid geochemistry has proved to be a valid tool for analyzing the processes occurring in geothermal reservoirs. The major effort is now invested in developing conceptual and quantitative models for chemical and physical processes that could produce the observed variations in fluid composition. These models are an effective complement to the classical methods of reservoir engineering in field development and exploitation. The fields in which the geochemical methods seem to be most effective are listed. Previous work in the field, as well as current development of research conducted on gas composition, is discussed and reviewed.