During drilling cementing plug in wells located on carbonate crack reservoirs in the Tahe Oilfield, it is very difficult to complete such operation without failure because of irregular open hole diameter, extensively fractured formation, measured depth error, etc.

Through analyzing limitation of traditional cementing plug technology in workover fields of petroleum industry,a new cementing plug without tubing string technology is developed after the experiments of mechanical bailing sand technology were successfully made.

Experiment of auto-watering dust precipitation equipments installment on No.1 line at regrinding workshop;

Feasibility Study on the production of carbonated water by brewery;

This paper from both theoretical analysis and practical experience,successfully to blast in weak strata consolidation、freezing layer and soft rock,the use of drilling water hole solved the difficulty in drilling hole,the use of PVC plastic pipe solved the difficulty of charge,the use of adjust detona.