西南石油大学学报（自然科学版）2011，Vol.33Issue(6)：20-24,5.DOI:10.3863/j.issn.1674-5086.2011.06.004
川东北须家河组砂岩储层成岩特征研究
摘要
Abstract
he study of diagenetic characteristic about reservoir rocks is one of the core issue to the reservoir research, and it is essentially prior to reservoir evaluation and prediction. In this paper, various diagenesises occurred . in Xujiahe sandstone are analysed by slices samples which are systematically and carefully observed. The genesis and its effect on the pore developing are discussed in the diagenesis stages later, based on which the diagenesis phases of sandstone in Xujiahe Formation are classified in the study area, and its diagenetic succession is then established. The result indicates that: intense compaction, pressure solution and early cementation of calcite are the key to significant loss the primary pores in Xujiahe sandstone. And, underground acid fluids lost their active s-pace, which makes dissolution immature and reservoir particularly tight. According to the classification discipline of elastics diagenesis phase, the sandstone of Xujiahe Formation experienced sorts of diagenesis, where its intensity is significant and is now in late substage-B diagenesis phase.关键词
成岩特征/成岩阶段/成岩序列/川东北地区/须家河组Key words
diagenetic characteristic/ diagenetic phase/ diagenetic sequence/ Northeastern Sichuan Basin/ Xuj iahe Formation分类
能源科技引用本文复制引用
周彦,黎平,谭秀成,全永旺,何莹..川东北须家河组砂岩储层成岩特征研究[J].西南石油大学学报（自然科学版）,2011,33(6):20-24,5.基金项目
四川省重点学科建设项目(SZD0414). （SZD0414）
