Screening and field applications of a pour point reducer for Yingwang Oilfield high waxy crude oil

The Gao131 crude oil oil-storey of chang 8 reservoir has a higher freezing point of 17℃,13.58% of high wax content of Yingwang Oilfield.The use of a single agent of its pour point depressant effect is not obvious,dispersants and additives compound can effectively reduce the freezing point of the reservoir crude oil.The optimal concentration of the additive is 0.5% dispersant concentration of 5%,which can make thefreezing point of crude oil reduced from 27℃ to 4.5℃.Field tests show that the pour point of the produced fluid have been reduced to below 5℃,oil mobility is also very well,the production has increased and stable.