地质科技情报2013，Vol.32Issue(1)：114-118,124,6.
鄂尔多斯盆地延长油气区山西组山2段储层砂岩成岩作用
Diagenesis of Shan-2 Member of Shanxi Formation in Yanchang Oil-Gas Field in Ordos Basin
摘要
Abstract
Based on the analysis of casting section, scan electron microscope, X-ray diffractions, this paper has studied the characteristics of petrology, diagenesis and parameters influencing porosity on Shan-2 Member of Shanxi Formation in Yanchang oil-gas field of Ordos Basin. The study result shows that the main sandstone in the area is quartz sandstone and lithic quartz sandstone with the lower compositional maturity and the higher structure maturity. Reservoirs diagenesis types include compaction, cementation and dissolution. The sandstones have experienced diagenetic evolution processes of A and B phases during early diagenesis and A1, A2 and B phases during late diagenesis. Decrease of sandstone porosity is mainly caused by compaction and cemention, which contributes 19. 5% and 14% to the loss of primary pores respectively. Secondary pore resulted from dissolution improved the reservoir property of sandstone to some extent while diaclases contribute less in improving the reservoir property of sandstone and the increasing porosity is 1.7% because of dissolution.关键词
鄂尔多斯盆地/延长油气区/成岩作用/山西组山2段Key words
Ordos Basin/ Yanchang oil-gas filed/ reservoir diagenesis/ Shan-2 Member of Shanxi Formation分类
能源科技引用本文复制引用
王香增,张丽霞,于波,周邻丹,尹锦涛..鄂尔多斯盆地延长油气区山西组山2段储层砂岩成岩作用[J].地质科技情报,2013,32(1):114-118,124,6.基金项目
国家重点基础研究发展计划项目(2003CB214602) （2003CB214602）
