水驱气藏典型水侵量计算方法综述

摘要

For water drive gas reservoir prediction with the material balance equation for calculating dynamic reserves and dynamic,you must first know water influx.In the gas reservoir development experience,the researchers also found that:with the gas reservoir,the external natural water is connected with the gas reservoir because of the decline of formation pressure and internal gas reservoirs invaded the gas reservoir,which will cause the water invasion of gas reservoir,also added the reservoir energy.Water invasion of gas reservoir and the strength of the underground water permeability,water thickness,geometry and other factors.Usually get water information by assuming or according to the geological features and reservoir parameters to infer.For the calculation of water influx for water drive gas reservoir recovery calculation has practical significance,therefore,this paper summarizes two typical calculating water influx calculation method.%对于水驱气藏，若用物质平衡方程式计算动态地质储量以及进行动态的预测，首先必须知道水侵量的大小。在气藏的实际开发经验中，研究者也发现：随着气藏的开采，与气藏相连的外部天然水域由于气藏内部的地层压力的下降而开始侵入气藏，即会造成气藏的水侵，同时也补充了气藏的能量。气藏水侵的强弱与地下水体的孔渗、水体厚度、几何形状等因素有关。通常获得水体信息的方法是通过假设或根据地质特征和气藏参数从而推断得来。对于计算水侵量为水驱气藏采收率计算等的研究具有实际的意义，本文综述了两种计算水侵量的典型的计算方法。