Effect factors of Nanyang crude oil´s microscopic characteristics

Using micro-digital-imaging instrument and OLYCIA Series P3 software to acquire and handle crude oil´s micro-pictures, it was aimed to research the microscopic characteristics of wax crystal in Nanyang crude oil under various treating conditions, including heating treatment temperature, standing time, cooling rate and cooling method. And the relationship between microscopic structure and crude oil rheology was discussed and analyzed through using OLYMPUS polarizing microscope and rheometer. The result showed that wax crystal´s morphology, quantity and average particle size changed at some degree corresponding to different testing conditions, and consequently to cause crude oil rheology improvement or deterioration, and there are the optimal heating temperature for Nanyang crude oil.