Evaluation of heterogentities and compositin profiles fo hydrocarbon mixtures in a reservoir: a new analytical approach

摘要

A new laboratory method,based on chemical and geochemical analysis of hte residual hydrocarbons extracted by washing the core plugs and /or the drilling cuttings with solvents (toluene or chloroform) before undergoing routine petrophysicla analyses,has been developed for evaluating the characteristics of crude oils and gas condenstates which saturate a fomation.the results of the anlayses are expressed in profiles which enable variations in composition and molecular heterogeneity of the hydrocarbons in a reservoir to be clearly detected.