莲花山构造动态储量计算方法对比与评价

Some Methods to Calculate Dynamic Reserves of Lianhuashan Structure

莲花山构造自第一口井投产以来展现出了良好的开发前景。为合理地开采该区块有必要弄清楚该构造的储量。动态储量是气藏(井)动态分析和动态指标预测的基础,计算气藏动态储量的方法有物质平衡法、产量递减分析法、产量累计法、罗杰斯蒂函数法等。以莲花山构造为例,对不同计算方法的适用条件和特点予以讨论,计算后得出该构造的动态储量,认为该构造具有较大的开采潜力。采用的几种方法计算过程相对简便,方便采用,但罗杰斯蒂函数法和产量累计法需在气藏开发一定程度,气井产量发生连续递减后使用,其计算结果才较为准确。

For gas reservoirs or wells, the dynamic reserves are the basis to carry out a dynamic analysis and predict some dynamic indexes. There are some methods to calculate the reserves including material balance, production decline, cumulative output, and logistic function. Taking Lianhuashan structure as an example, we analyzed their own application conditions and features of these four methods. Finally, the dynamic reserves were obtained. It is deemed that this structure has a large exploitation potential.