This paper presents a systematic nomenclature and taxonomy for fluid inclusions.Three groups of inclusions

namely the hydrocarbon inclusions

hydrocarbon-containing inclusions

and aqueous/non-hydrocarbon inclusions

have been recognized based on microscopic fluorescence and transmitted light properties of inclusions.The hydrocarbon inclusions can be further divided into nine types based on their composition and phase characteristics :liquid hydrocarbon-liquid-gaseous hydrocarbon inclusions

gaseous hydrocarbon inclusions

bitumen-containing inclusions

hydrocarbon-bearing aqueous inclusions

hydrocarbon-bearing gaseous inclusions

liquid phase aqueous inclusions

two-phase aqueous inclusions

non-hydrocarbon gaseous inclusions

and childmineral-bearing aqueous inclusions.The liquid hydrocarbon-liquid-gaseous hydrocarbon inclusions can also be divided into four subclasses:heavy-oil inclusions

medium-oil inclusions

light-oil inclusions

and condensed oil inclusions.In addition

the paper also focuses on the distribution patterns of hydrocarbon inclusion in reservoirs

source rocks

and carrier beds

and the geological application of these fluid inclusions to the generation

migration

accumulation

and evolution of hydrocarbon.