CHARACTERIZATION OF ASPHALTENES FROM FIELD SOLID DEPOSITS AND THEIR MATCHING CRUDE OILS

摘要

Study of asphaltenes deposit from the field and asphaltenes precipitated out from the matching crude oils were undertaken in order to show main features, which differentiate them. In addition to elemental analysis, NMR spectroscopy, a fractionation technique that divided an asphaltene sample into different components based on polarity was used to characterize these asphaltene samples. Our results show that asphaltene samples from the filed solid deposits consist of substantially higher portions of high polar fraction compare to those precipitated from the matching oils. Relevant data on the matching oils such as SARA analysis, field data will also be presented.