Study on the Progress of Pour Point Depressant

This paper hriefly introduces the progressive general situation of pour point depressant in the world. pressanl are mainly discussed, including the effect of the contents of paraffin; the temperature and quantity of pour point depressants; cooling velocity and shearing rate. The kinds of depressants and application in the oil field are listed. The current study fields are as following: the mechanism of depressants; the better depressants for Daqing crude oil and the influnce between different chemicals used in crude oil.