富县地区上古生界砂岩成岩作用研究  

A study on Upper Paleozoic group sandstone diagenesis in Fuxian Area of Ordos Basin

作　　者：刘林玉[1] 高潮[1] 

机构地区：[1]西北大学地质学系/大陆动力学国家重点实验室,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2006年第6期954-956,共3页Journal of Northwest University（Natural Science Edition）

基　　金：国家"973"基金资助项目(2003CB214607);国家自然科学基金资助项目(40472099);西北大学科研基金资助项目

摘　　要：目的探讨砂岩成岩作用阶段划分、成岩作用类型及其对储层的影响。方法根据砂岩薄片、铸体薄片、扫描电镜和X衍射对储层进行综合分析和研究。结果鄂尔多斯盆地富县地区石盒子组砂岩储集层处于中成岩A期阶段,山西组—马家沟组储集层已处于中成岩B期—晚成岩阶段。本区砂岩储集层在埋藏成岩过程中发生的成岩作用主要为压实作用、胶结作用、破裂作用和溶蚀作用。结论压实作用和胶结作用强烈地破坏了砂岩的原生孔隙结构,溶蚀作用和破裂作用则有效地改善了砂岩的孔隙结构。Aim In order to explore the division of diagenesis stage, the types of diagenesis and the effect of the reservoirs. Methods Based on the date analysis of casting lamella, scan electron microscope and X-ray diffractions for discussing and studying reservoirs. Results Fuxian Area Shihezi Formation sandstone reservoirs belong to the ＂A＂ late diagenesis, Shanxi Formation sandstone reservoirs belong to the ＂B＂ late and later period stage of diagenesis in Ordos Basin, the diagenesis include compaction, cementation, fracture and dissolution. Conclusion The compaction and cementation destoryed the primary-texture of pore of sandstone reservoirs intensively, the dissolution and fracture change the pore structure effectively on sandstone reservoirs.

关 键 词：成岩作用 孔隙结构 富县地区 鄂尔多斯盆地 

分 类 号：TE344[石油与天然气工程—油气田开发工程]