Quantitative Research for Porosity Evolution in Low Permeability Deep Gas Reservoir of Rift-Subsidence Basin

• 责任者：Yu Wenquan (Research Institute of Geosciences ; Jiangsu Oil Field Company ; SINOPEC ; Yangzhou 225009 ; China) ; Li Li
• 刊名：Natural Gas Geoscience
• 出版年：2010
• 卷期：21(3)
• 关键词：低渗透储集层 ; low permeability reservoirs ; 孔隙度 ; porosity ; 东营凹陷 ; Dongying Sag
• 页码：p.397-405
• 图表：4 illus., 1 table, 14 refs.
• 分类号：1003
• issnNo：ISSN1672-1926
• isbnNo：CN62-1177/TE

Based on data of micro-thin section, scanning electron microscope and image analysis, the porosity evolution of low permeability glutenite body as the deep gas reservoir in the northern slope of Dongying Depression was quantitatively described. According to type of reservoir space and feature of pore, the reservoirs were divided into three types, i.e. secondary denudation pore type, coexistence type of secondary pore and primary remain pore, and micro-fissure type. Based on effect of physical properties of reservoir, two types of diagenesis were classified as constructive diagenesis (i.e. undercompaction, dissolution, recrystallization) and destructive one (compaction, bitumen filled and cementation deposit).