摘要
Abstract
Factors affecting low permeability reservoir productivity are numerous and complex,so the correct analysis and evaluation of these factors,for low permeability reservoir development have important significance. This article excludes engineering factors,from geological considerations,focuses on the analysis and evaluation of sedimentary and diagenetic effects on productivity,and analysis of its mechanism taking advantage of special data such as constant-pressure mercury and NMR. Research indicates that:the storage layer production capacity are mainly controlled by later diagenesis in Sag Gaoyou South broken bands,and controlled by sedimentation in local small scale and the same diagenetic environments,to study its mechanism,reservoir is mainly affected by diagenesis such as compaction,cementation,corrosion in South fault terrace of Gaoyou Sag,to form a variety of micro-pore structure,led to significant differences of reservoir production capacity in South fault terrace of Gaoyou Sag,so diagenetic facies studies for evaluation of low permeability reservoir productivity forecast is significant.关键词
高邮凹陷/沉积微相/成岩相/微观孔隙结构/产能Key words
Gaoyou Sag/sedimentary microfacies/diagenetic facies/microscopic pore structure/productivity分类
能源科技
