通过井下长时压力计监视油藏压力的变化是目前油田后期开采监测油藏变化的一种新方法 ,其应用推广对油藏描述、动态分析以及生产动态管理具有重要的指导意义。根据长时测试过程的测试周期长的特点 ,建立了考虑粘度—温度影响的数学模型 ;利用数值Laplace变换算法得到快速计算长时压力计变流量条件下的压力响应 ;同时 ,应用非线性优化技术进行全压力史自动拟合 ,证明能够有效确定油藏参数。该技术已成功地应用于辽河油田的热采监测过程 It is a new method to monitor the change of reservoir in the late stage of oilfield and the application and popularization have important guiding significance for reservoir description, dynamic analysis and production dynamic management. According to the characteristics of long test period, the mathematical model considering the influence of viscosity-temperature was established. The pressure response of the long-term pressure gauge was calculated by using the numerical Laplace transform algorithm. At the same time, the nonlinear optimization technique The full pressure history is automatically fitted to prove that the reservoir parameters can be effectively determined. The technology has been successfully applied to Liaohe Oilfield thermal recovery monitoring process