基于物质平衡和水侵量的边水容量计算  

Edge water capacity calculation based on material balance and the water influx

作　　者：姚翔[1] 董杰 杨慧[1] 杨松[1] 汪敏[1] 

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]西北石油分公司塔河采油三区,新疆轮台841600

出　　处：《油气地球物理》2013年第2期60-62,67,共4页Petroleum Geophysics

摘　　要：凝析气藏在开发过程中,由于见水早,水侵速度快,给开采带来了许多困难。对于凝析气藏,掌握水体能量大小才能有效改善气藏开发条件。以Y气田S区块为例,首先通过相对压力与采出程度的曲线关系,结合地层物性参数、生产静态及动态资料,对是否存在天然水侵进行判断;然后通过气藏物质平衡方程计算各阶段的水侵量,并与累积采出量进行对比,判断出气藏天然能量的强弱;最后分别用油藏工程方法和数值模拟方法计算水体大小,判断水体能量的强弱,并对气藏驱动指数进行计算。研究判断该气藏驱动类型主要为弹性气驱,而非水驱。因此,气藏水体能量大小的计算对气藏开发十分重要。In the process of developing the gas condensate reservoir, it brings many difficulties to production as the early water breakthrough and quick water intrusion. For the condensate gas reservoir, the way to improve gas reservoir development conditions is to calculate the water energy. Taking the S block of the Y gas field as example, first, combined with the formation physical property parameters, static and dynamic production data, and found out whether a natural water intrusion is exited in the S gas field based on the relationship between relative pressure and degree of the reservoir recovery. Then the water influx in each stage was calculated by using the material balance equations, and compared the results with the cumulative amount to find out whether or not the natural energy is strong or weak in the gas condensate reservoir. At last, the reservoir engineering and the numerical simulation meth- ods were used to calculate the size of water body to find out whether or not the water body is strong or weak, the drive index of the gas reservoir were also calculated. The conclusion is that the drive type of the gas reservoir is pressure depletion drive, not water drive. So it is very important to calculate the water energy for the gas reservoir development.

关 键 词：凝析气藏 物质平衡 水侵 水体能量 驱动指数 

分 类 号：TE37[石油与天然气工程—油气田开发工程]