裂缝型凝析气藏的动态储量和水侵量计算研究

针对存在活跃边、底水的裂缝型低含凝析油的凝析气藏，基于物质平衡原理，考虑基质和裂缝的 压缩系数、不同束缚水饱和度，建立具有水侵作用的裂缝型凝析气藏的物质平衡方程，并引入弹性储容比 参数，提出了一种计算裂缝型底水凝析气藏动态储量和水侵量的简便方法。研究表明，利用仅考虑单一孔 隙介质的视地质储量法和视地层压力法计算气藏的储量，结果均偏大，而考虑双重孔隙介质的新方法能 较准确地计算气藏的地质储量和水侵量。

Study on calculation of dynamic reserves and water influx in fractured condensate gas reservoir

Based on the principle of material balance, combined with the compressibility and irreducible water saturation differences between the matrix and fracture system, a new material balance equation for fractured gas condensate reservoir with low condensate oil content and active edge and bottom water was established. Moreover, a simple method of calculating dynamic reserves and water influx of fractured condensate gas reservoir was put forward by introducing elastic storativity ratio. A case study shows that the OGIP and water influx were too lager if calculated by using apparent formation pressure method and depending on the geological reserves method considering only the single porosity media. Therefore, the new material balance equation could calculate the OGIP and water influx more accurately due to considering double porosity media.