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世界上有许多气藏都是水驱气藏,水驱气藏的水侵量计算、采收率计算是十分重要的研究课题。本文在前人研究基础上,通过一些文献调研,围绕水驱气藏水侵量计算方法与采收率计算理论主要开展了以下几个方面的研究工作:①水侵量计算方法;②建立简单的采收率计算方法;通过以上研究,取得了如下成果和认识:(1)在传统的水侵量解析计算方法基础上,用VB语言编制了水侵量计算软件,软件包括Carter-Tracy常用水侵量计算方法,既可以计算无限大水体的水侵量,又可以计算有限水体的水侵量。(2)根据李闽、刘世常等提出的确定气藏废弃压力及可采储量简便方法,运用压降储量曲线与虚拟曲线,建立拟合曲线法求出采收率
Many of the world’s gas reservoirs are water-driven gas reservoirs, water-influx reservoir calculation of water influx, oil recovery calculation is a very important research topic. Based on the previous researches, this dissertation mainly studies the calculation methods of water influx and calculation theory of oil recovery by some literatures: (1) Calculation method of water influx; (2) (1) On the basis of the traditional calculation method of water intrusion volume, the water intrusion calculation software is compiled with VB language, and the software includes the commonly used Carter-Tracy The calculation method of water influx can not only calculate the water influx of an infinite water body, but also calculate the water influx of a limited water body. (2) According to the simple method proposed by Li Min and Liu Shichang et al. To determine the pressure and recoverable reserves of gas reservoirs, the pressure drop reserve curve and the virtual curve were used to establish the fitting curve method to determine the recovery ratio