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新场气田J2S2气藏是一个典型的低渗致密气藏，J2s2^2和J2s2^4气层目前是J2S2气藏的主要产层。文章在系统总结该气藏近十年试采特征基础上，采用数值模拟方法，围绕确定J2s2^2和J2s2^4气层合理的生产规模和生产井网，设计了12套模拟方案进行模拟研究。模拟结果表明：气藏的采气速度控制在2．5％左右，能够达到一定的生产规律，可以实现规模开发气藏的目的；井距的大小对稳产时间和采收率影响明显，井距越小，其稳产时间越长，采收率越高；在相同的生产井数和废弃压力下，不同的采气速度可以获得相同的最终采收率。

Numerical Simulation Research on the Low Permeability Tight J2s2 Gas Reservoir in Xinchang Field

J 2 s 2 gas reservoir in Xincha ng field is a typical low permeability tight gas reservoir,in which the J 2 s 2 2 and J 2 s 2 4 are the major pay beds at present.On the bas is of summarizing production testing characteristics of the reservoir in recent ten years,a simulation research on the twelve sets of plans designed was carried out by use of numerical simulation method around determining the reasonable pro duction scale and producing pattern for the J 2 s 2 2 and J 2 s 2 4 gas beds.Simulation results show that if the gas producing rate of abou t 2.5% is maintained,a certain production scale can be reached in the reservoir and the target of scale development of the gas reservoir may be realized;the inf luence of well spacing density on the stable production period and recovery fact or is obvious,the smaller the well spacing,the longer the stable production peri od,the higher the recovery factor;and an identical ultimate recovery factor may be obtained at different gas producing raters under the conditions of the same n umber of producing wells and the same abandonment pressure.