Experimental study on viscosity reduction of Tahe super-heavy oil blended with reforming heavy aromatics
In response to the problem of a large amount of excess heavy aromatics in refinery reforming and the difficulty of processing,combined with the high blending ratio and scarce thin oil resources in heavy oil blending and viscosity reduction mining,reforming heavy aromatics will be used for research on ultra heavy oil blending and viscosity reduction.At the same dilution ratio of 0.10,the viscosity reduction rates of Tahe thin oil and reformed heavy aromatics are 68.45%and 92.00%,respectively;The fitting calculation shows that when the amount of reformed heavy aromatics is only 36.20%of the thin oil,it can meet the requirements of thinning and viscosity reduction for heavy oil in Tahe Oilfield.Taking the heavy oil self injection well in Tahe Oil-field as an example,when the water content of heavy oil is between 0%and 50%,taking the total annual oil production of Tahe Oil-field blended light oil of 2 million tons/year as the benchmark,taking the average blending ratio as 1,the annual oil increase rate can reach 49.79%to 71.09%.With a water content of 30%in heavy oil,the net sales revenue of the oilfield has significantly increased from 4.734 billion yuan/year to 10.591 billion yuan/year.This study provides a new technical approach for the utilization of reformed heavy aromatics and the extraction of heavy oil by blending and reducing viscosity.
Tahe ultra heavy oilreforming heavy aromatic hydrocarbonsTahe thin oildilution and viscosity reduction
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