The freeze-casted green body under controlled temperature distribution contains oriented and aligned pores, which favours fabrication of porous ceramics and has drawn much attention of researchers.

Hydraulic jetting oriented perforating and fracturing in horizontal well;

Based on analysis the mechanism about declining deformation fracturing pressure,and carried on comparison studies about perforating technology between oriented perforating and compound perforating.

Study on initiation and propagation mechanism of fractures in oriented perforation of new wells;

Research on oriented perforation optimization technique for fracturing wells in tight gas reservoir;

Combining the characteristics of oriented perforation,geological feature analysis of fracture reservoirs,sand production reservoirs,fractured reservoirs and waterflooded reservoirs shows that oriented perforation is more suitable in these reservoirs than conventional perforation.