摘要
气藏单井控制储量的确定在气藏的开发过程中占有重要地位。由于火山岩气藏在横向上物性差异很大,它的动态储量的计算应当考虑火山岩气藏双重介质储渗模式和存在启动压力梯度的特点。通过流动分析,将火山岩动态储量的增加分为未达到拟稳态流阶段和拟稳态流阶段,建立了火山岩气藏井控储量预测数学模型。以徐深1-1井为例,通过模型计算结果与试井解释结果的对比,验证了模型的正确性;并参照试井解释结果,进一步给出了井控储量随时间的变化模式,从而更加有利于确定动态储量,为火山岩气藏的开发提供了依据。
Well control reserve is crucial in the development of gas reservoir. Due to the large heterogeneity in volcanic gas reservoir, the calculation of dynamic reserve should take its storage-perforation model as well as thresh- old pressure into consideration. Based on flow analysis, increase of dynamic reserve can be separated into two sta- ges：the stages before and upon pseudo-steady state flow. The mathematical model is built for predicting the dynam- ic reserve of volcanic gas reservoir. Take well Xushen 1-1 as an example, through comparison of well testing and model calculation, the validity of mathematical model is verified. Furthermore, the change of well control reserve with time is provided, which is more helpful for canic gas reservoir. determining dynamic reserve and directing development of vol-
出处
《科学技术与工程》
北大核心
2014年第17期48-52,共5页
Science Technology and Engineering
基金
国家重大科技专项(2008ZX05016-001)资助
关键词
火山岩气藏
动态储量
气井
预测模型
volcanic gas reservoir
dynamic reserve
gas well
prediction model
