STUDY ON HYDROCARBON MIGRATION VESTIGE OF DONGHETANG FORMATION IN THE PALEOZOIC ERATHEM IN SOUTH-WEST OF TAHE OIL FIELD

作者：LI Xiu-hua · 发表于：Computing Techniques for Geophysical and Geochemical Exploration · 年份：2007 · 研究领域：Hydrocarbon exploration and reservoir analysis、Geological and Geophysical Studies、Geological Modeling and Analysis

In the paper,the hydrocarbon migration vestige of Donghetang formation in the south-west of Tahe oilfield is studied systematically by analyzing oiliness cores and slices and using Microscope infrared spectroscopy(Micro-FTIR) technique,which was used to this study for the first time.Results indicate that: oil and gas in Donghetang formation have the same sources;the components of light oil in the southern are different to the northern;the heavy oil either the asphalt with the light oil are formed in the different time;the northern wells have much heavy oil and asphalt,but more closer the south,more lighter oil is;the northern and middle northern wells can be often find the phenomena of water driving.On the base of vestige's study,consulting the geologic information and some geologists' works,we can analyze the hydrocarbon migration's path,and provide proofs for building the right accumulation model.Micro-FTIR is useful for our study,and should be a technique for migration study in the future.