低渗致密气藏凝析气藏开发难点与对策

我国低渗、致密气藏和凝析气藏的储量占相当大的比例， 而其中相当部分处于低产状态开发好这类气藏对石油工业持续稳定发展具有十分重要的意义。围 绕深层低渗致密气藏、凝析气藏开发问题.首先分析了低渗致密气藏的地质特征和开发特征.提出了低渗致密气藏开发的十项配套工艺技术.最后重点建议了五项技术措施即深度压裂改造技术.凝析气井井筒和近井地带积液的处理技术开发后期低于最大凝析压力条件下的注气技术。低渗致密凝析气藏多孔介质油气体系相态分析技术和某些适合于低渗致密气藏和凝析气藏的气藏工程分析技术。

Difficulties and M easures for Development of Low Permeability Tight Gas Reservoirs and Condensate Gas Reservoirs

Low permeability tight gas reservoirs and condensate gas reservoirs account for a rather high proportion of domestic gas re-serves, but many of them have low productivity. So it is significant to develop these reservoirs efficiently for continuous and stabledevelopment of China's petroleum industry. Around the problems of the development of deep low permeability tight gas reservoirs andcondensate gas reservoirs,this paper makes an analysis on the geologic and development characteristics of these reservoirs and pre-sents ten proper technologies.Finally,five technical measures for the development of such gas reservoirs are proposed in detail.These are deep fracturing technology, treatment technology of accumulated liquids in condensate gas well and near well bore, gas in-jection technology when the formation pressure is lower than the maximum condensatepressure, phase behavior analysis technologyn porous media of low permeability tight condensate gas reservoir and other gas reservoir engineering technologies.