石油实验地质2017，Vol.39Issue(1)：126-133,8.DOI:10.11781/sysydz201701126
致密砂岩储层差异性成岩演化对孔隙度演化定量表征的影响--以鄂尔多斯盆地华庆地区长63储层为例
Quantitative calculation of tight sandstone reservoir porosity evolution based on different diagenesis:A case study of Chang 63 reservoir in Huaqing area, Ordos Basin
摘要
Abstract
The Chang 63 tight sandstone reservoirs in Huaqing area of the Ordos Basin was deposited in delta front and stable,semi⁃deep lake environments. A simulation equation corresponding to porosity was established according to the characteristics of diagenetic evolution or the comprehensive geological effect of a clastic reservoir. Mineral components and porosity types were described by using casting thin section and SEM analyses. Granularity images were applied to get the structural characteristics and sorting features of clastic particles. Sedimentary microfacies, well logging, normal physical characteristics and depth analyses were applied to determine the depositional environ⁃ment, burial depth and physical characteristics. Simultaneously,we tested paleotemperature, vitrinite reflectance, the highest pyrolysis temperature and clay minerals to study diagenesis, porosity evolution and relatively high per⁃meability formation. Burial history analysis of the study area provided a theoretical reference for oil⁃and⁃gas explo⁃ration and development of tight sandstone reservoirs. According to the analysis of four typical samples, we consi⁃dered that the properties were mainly controlled by compaction, and differentiated diagenetic evolution was the root cause that led to different physical characteristics and porosity structures.关键词
致密砂岩/成岩作用/孔隙度/定量演化/地质响应/鄂尔多斯盆地Key words
tight sandstone/diagenesis/porosity/quantitative evolution/geological response/Ordos Basin分类
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张茜,孙卫,杨晓菁,李浩..致密砂岩储层差异性成岩演化对孔隙度演化定量表征的影响--以鄂尔多斯盆地华庆地区长63储层为例[J].石油实验地质,2017,39(1):126-133,8.基金项目
研究生自主创新项目（YZZ15019）；中国博士后科学基金（2015M582699）；国家科技重大专项“大型油气田及煤层气开发”（2011ZX05044）；陕西省科技统筹创新工程（2011KTZB01－04－01）联合资助。 （）
