Due to the thick loose level of the downcast shaft Cenozoic group,the large depth of grouting,the requirement of high quality,the time limit for the project in the construction of the Southern Field of Guqiao Coal Mine,the straight hole and the S drilling hole were tied in wedlock each other to carry out the grouting technology,and got fine effects.

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.