Though fracturing separate layers and optimizing intervals,we made new breakthrough in predicting and controlling fracture height technique,gel breaking technique and selecting fracture interval,which forms the matching technique suitable for fracturing the thin .

On the basis of the characters of the reservoir, the classification criteria of fracturing optimization design was established and the optimization design was done to different reservoir.

Research on hydraulic fracturing technique of thin layer in old blocks of Henan oilfield;

. Applicability of hydraulic fracturing and acidization technologies to reservoirconditions;

Optimization and field application of hydraulic fracturing design of directional wells;

Research on Packers and Pipe Strings of Large Drift Diameter Fracturing;

Development of high duty five-cylinder plunger pump for oilfield fracturing;

Application of tip screening out and fracturing technology in transformation of low permeable reservoir;

Study on Determining Method of Sand Production Rate for Low Permability and Fractured Gas Well;

Analysis of pressure dynamic curve on fractured horizontal well;

Numerical test to the influence of hydraulic perforation parameter on fracture in oil and water wells;