Discussion on sand removal from sandy crude and purification of oily sand in offshore viscous oilfield;

Researches on the Cleaning Technology of the Contaminated Sands in Gathering Stations;

Solvent extraction for recovery of crude oil from oily sludge;

By meansof petrology,mineralogy,X- ray diffraction analysis and vitrinite reflectance,the character and formation of the oil- bearing sandstone are studied in Tuokexun depression of Turpan- Hami basin.

Predicting oil sand body in the Langgu depression by several pattern recognition methods;