成都理工大学学报（自然科学版）2017，Vol.44Issue(2)：139-148,10.DOI:10.3969/j.issn.1671-9727.2017.02.02
川南东峰场地区须二、须六段成岩演化差异对储层的影响
Influences of diagenesis evolution difference on the Xu-2 and Xu-6 reservoir in the Dongfengchang area, southern Sichuan, China
摘要
Abstract
Comparative study of petrologic characteristics,types of reservoir space,physical properties and pore structure characteristics of Member 2 and 6 of Upper Triassic Xujiahe Formation (Xu-2 and Xu-6) reservoirs in Dongfengchang area of southern Sichuan reveals that the Xu-2 and Xu-6 reservoirs have different petrologic characteristics and types of reservoir space,while have similar physical properties and pore structure characteristics.On the basis of analysis of sedimentary and diagenetic conditions of reservoirs,it is considered that the sedimentary conditions and sedimentary environment of Xu-2 and Xu-6 are similar.The difference of reservoir characteristics is resulted from different diagenesis evolution.It shows that the Xu-2 reservoir experienced diagenetic evolution of mechanical compaction,grain-coating authigenic,early calcite,quartz overgrowth,feldspar dissolution,carbonate minerals filled in secondary pore,and formed reservoirs which are dominated by chlorite rim cementation,siliceous cementation,early calcite cementation,with the secondary solution pores types as the main reservoir space.Sandstones of Xu-6 reservoir is affected by atmospheric fresh water in syndiagenesis stage,and formed a lot of kaolinite resulted from feldspar alternation.The reservoir space is characterized by intergranular pores,micro-cracks and primary intergranular pores.关键词
四川盆地/须家河组/储层特征/成岩演化Key words
Sichuan Basin/Xujiahe Formation/reservoir characteristics/diagenesis evolution分类
天文与地球科学引用本文复制引用
顾战宇..川南东峰场地区须二、须六段成岩演化差异对储层的影响[J].成都理工大学学报（自然科学版）,2017,44(2):139-148,10.基金项目
国家科技重大专项(2011X05002-004-006HZ,2016ZX05002-004-010). （2011X05002-004-006HZ,2016ZX05002-004-010）
