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新场气田J2S气藏为川西致密低渗气藏，其埋藏深度较大，地质特征较为复杂，压裂施工泵压较高。文章针对该气藏中深井储层特征，应用三维压裂设计软件（FRACPRO），预测压裂施工泵压，掌握裂缝延伸规律，结合油藏模拟结果，进行了压裂优化设计，采用适合中深地层的优势、低伤害、低摩阻压裂液新体系，现场施工取得圆满成功，增产效果显著。

Application of 3-D Fracturing Design Program (Fracpro) in the Fracturing Design of J2s Reservoir in Xinchang Field

The J 2 s gas reservoir in Xinchang field is a low permeabili ty tight gas reservoir in West Sichuan and it is possessed of the properties as a large burial depth,complicated geological conditions and a high pump pressure in fracturing operation,etc.In the paper,in light of the reservoir characteristi cs of the medium deep wells in the field,the pump pressures in fracturing opera tion are predicted and the extension law of fractures is found out by applying 3 -D fracturing design program (FRACPRO);and in combination with the results of re servoir simulation,a fracturing optimization design is carried out,in which a hi gh quality,low damage and low frictional resistance fracturing fluid system su itable for medium deep strata is adopted.It is very successful in on site oper ation,the increase in production being obvious.