大庆石油地质与开发2018，Vol.37Issue(1)：171-174,4.DOI:10.19597/J.ISSN.1000-3754.201705024
致密砂岩气藏可动水层早期判识方法及矿场应用
EARLY IDENTIFYING METHODS OF THE MOVABLE AQUIFER IN TIGHT SANDSTONE GAS RESERVOIRS AND THEIR FIELD APPLICATIONS
摘要
Abstract
With the time extend of the tight sandstone gas reservoir development,the problem of the water production becomes more and more obvious,and moreover its influences on the productivity and recovery are rather significant.Therefore,it is of great significance to identify the movable aquifer in the early stage of the development for optimizing by “controlling water and increasing gas production”.Taking one gas field block of Ordos Basin as the research target,with the help of high-pressure mercury injection,casting thin section,nuclear magnetic resonance and step-wise pressurized gas driving for the water etc.,the seepage characteristics were tested for the gas and water in the microscopic pore and throat of the sandstone.The results show that the water phase mobility in the reservoirs with different permeabilities depends on the water saturation and the proportion of the fluid occurrence space;when the water saturation is larger than the sum of the proportions of the capillary action space and the bound fluid space,the water phase is extremely easy to flow,and it will be easy to produce water when opening the reservoir,i.e the layer can be classified into the movable aquifer,on the contrary,it belongs to the immovable aquifer.The contrast between the gas well data and gas tested results for the typical block shows that the coincidence is much better.关键词
致密砂岩气藏/流体赋存空间类型/可动水层划分/实验研究/矿场试验/对比分析Key words
tight sandstone gas reservoir/fluid occurrence space type/movable aquifer classification/experimental study/field test/contrastive analysis分类
能源科技引用本文复制引用
朱秋影,魏国齐,刘锐娥,胡勇,谢坤,王继平..致密砂岩气藏可动水层早期判识方法及矿场应用[J].大庆石油地质与开发,2018,37(1):171-174,4.基金项目
国家科技重大专项“大气田富集规律与勘探关键技术”(2016ZX05007). （2016ZX05007）
