石油实验地质2016，Vol.38Issue(2)：219-223,230,6.DOI:10.11781/sysydz201602219
超深层致密砂岩储层致密初始期的厘定--以中东鲁卜哈里盆地为例
Initial porosity reduction phase of ultra-deep tight sandstone reservoirs:A case study of the Rub Al Khali Basin in the Middle East
摘要
Abstract
The Ordovician S Formation in the Rub’ Al Khali Basin in the Middle East is a typical ultra⁃deep tight sandstone reservoir. Siliceous cementation dominated by the secondary overgrowth of quartz is the main cause for reservoir porosity reduction in the study area. The period of the pyrobitumen charge is taken as the beginning of reservoir tightening, while the secondary overgrowth of quartz, which sharply reduced porosity, is taken as the end of reservoir tightening. We combined mineral cathodoluminescence, fluid inclusion temperature, authigenic illite isotopic dating with tectonic subsidence, burial and thermal evolution history analyses, and concluded that the Ordovician reservoirs were cemented from the Late Triassic to Early Jurassic with a tightening rate of 30.6 m/Ma. The reservoir continued thermal evolution after tightening. Oil partially cracked to gas, some of which condensed in traps, and some of which escaped upwards or migrated through micro⁃pores to become diffused mix⁃tures of oil and gas.关键词
砂岩储层/致密初始期/包裹体/石英次生加大/奥陶系/鲁卜哈里盆地Key words
sandstone reservoir/initial tightening phase/inclusion/secondary overgrowths of quartz/Ordovician system/Rub’ Al Khali Basin分类
能源科技引用本文复制引用
姜辉,樊生利,赵应权,张哨楠,周瑾,刘志强..超深层致密砂岩储层致密初始期的厘定--以中东鲁卜哈里盆地为例[J].石油实验地质,2016,38(2):219-223,230,6.基金项目
国家科技重大专项课题“中东中亚富油气区大型项目勘探开发关键技术”（2008ZX05031）资助。 （）
