二元复合存储模型在哈拉哈塘碳酸盐岩试井解释中的应用

Application of Binary Compound Storage Model in Well Test Interpretation for Halahatang Carbonate Rock

哈拉哈塘油田碳酸盐岩储层高温高压,流体性质和流动机理复杂,试井曲线具有多样性、复杂性及多解性的特点。当前常用的解析试井模型包括双孔、双渗、径向复合等类型,均具有一定的适用局限性。二元复合存储模型是指一个封闭油藏系统经过一条半渗流边界,在拟稳态的条件下流动到第二个封闭油藏系统的一种解析试井解释模型,其解释结果表明:地震解释中的"串珠"状构造在一定条件下能够相互连通。根据研究区地质特点及地震资料,二元复合存储模型在该区具有良好的适用性,为该区气藏的动态开发提供合理的动态参数与理论依据。

The carbonate reservoir of Halahatang oilfield is high temperature and high pressure,whose fluid properties and flow mechanism are complex,well test curve of it has the characteristics of diversity,complexity and multiple solutions. Current commonly used analytical well test model includes double orifice and double permeability,radial composite type,all having certain limitations application. Binary compound storage model is point to a analytical well test interpretation model at where of a closed reservoir system after a half of seepage boundary,under the condition of quasi steady state flows to the second enclosed reservoir system,its interpretation results show that the'beaded' structure of the seismic interpretation can be connected to each other under certain conditions. According to the geological characteristics and the seismic data in the study area,the binary composite storage model has a good applicability in the region,which provides a reasonable dynamic parameters and the theory basis for dynamic development in the gas reservoir of this region.