高邮凹陷阜宁组三段储层成岩演化序列  

Diagenetic Sequence of the E_1 fn_3 in Gaoyou Sag

作　　者：卢黎霞[1] 陈长征[1] 于雯泉[1] 朱煜[1] 毕建福[1] 

机构地区：[1]中石化江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《石油天然气学报》2013年第11期6-10,4,共5页Journal of Oil and Gas Technology

摘　　要：利用薄片观察,黏土矿物分析、流体包裹体测温及储层物性等资料,对高邮凹陷古新统阜宁组三段(E1fn3)储层的成岩演化序列进行了深入探讨。研究认为,高邮凹陷E1fn3储层具低渗、超低渗特征,成岩过程复杂。利用黏土矿物的两个转换带,可将该区E1fn3划分为中成岩A1期、中成岩A2期及中成岩B期。该套储层经历了弱酸-弱碱-弱酸-中性的成岩环境,发育了颗粒压实-长石溶蚀、石英加大-碳酸盐胶结、加大边交代-碳酸盐、长石溶蚀的成岩序列,最终成为有效储层。By using the data of microscopic thin section observation,clay mineral analysis,fluid inclusion temperature detection and reservoir properties,the diagenetic evolution sequence of E1 fn3 in Gaoyou Sag was deeply studied.It was considered that the diagenesis was complex with low and extra-low permeability in the reservoir.The two transition zones of clay minerals were used and E1fn3was divided into mid diagenetic Stage A1,A2and Stage B.The reservoirs experience weak acid,weak alkaline,weak acid,neutral diagenetic environments,and the diagenetic sequence of particle compaction,the dissolution of feldspar,quartz overgrowth,carbonate cementation,account-dissolution of carbonate, feldspar is developed,effective reservoirs are formed eventually.

关 键 词：储层 成岩演化 黏土转换带 阜宁组三段 高邮凹陷 

分 类 号：P618.13[天文地球—矿床学]