鄂尔多斯盆地红河油田长8致密砂岩储层成岩特征

王明培; 夏东领; 伍岳; 庞雯; 邹敏

doi:10.11781/sysydz201806786

鄂尔多斯盆地红河油田长8致密砂岩储层成岩特征

doi: 10.11781/sysydz201806786

1. 中国石化华北油气分公司, 郑州 450000;
2. 中国石化石油勘探开发研究院, 北京 100083

基金项目:

中国石化科技部重点攻关项目“鄂南致密油储层精细表征技术研究”（G5800-17-ZS-KJB010）资助。

详细信息

作者简介:
王明培(1969-),男,高级工程师,从事油气勘探研究及管理。E-mail:wangmingpei1970@163.com。

中图分类号: TE122.2
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出版历程
- 收稿日期: 2018-07-04
- 修回日期: 2018-09-12
- 刊出日期: 2018-11-28

Diagenesis features of Chang 8 tight sandstone reservoir in Honghe Oil Field, Ordos Basin

1. North China E & P Company, SINOPEC, Zhengzhou, Henan 450000, China;
2. SINOPEC Petroleum Exploration and Production Research Institute, Beijing 100083, China

摘要

摘要: 综合利用铸体薄片、扫描电镜和电子探针等分析化验资料，对鄂尔多斯盆地红河油田三叠系延长组长8致密砂岩储层的成岩作用类型、分布特征及主控因素进行了系统研究。研究区长8储层目前处于中成岩A阶段，主要成岩类型为压实作用、溶解作用及2期方解石、2期高岭石、3期绿泥石胶结作用。独立型薄层砂体分布在河道边部和河道上游，其塑性矿物含量高，以强压实作用为特征，溶解作用和胶结作用较弱，发育强压实成岩相。复合型厚层砂体分布在河道中心，其中顶部和底部砂体以强方解石胶结为特征；中部砂体根据砂体岩相类型存在多个成岩序列和成岩相，其中富含刚性矿物中-细砂岩岩相主要发育绿泥石胶结中溶解成岩相，过渡型细砂岩岩相由于早期方解石胶结程度差异，可发育方解石中胶结成岩相或高岭石中胶结成岩相。
- 成岩作用 /
- 成岩相 /
- 砂岩岩相 /
- 长8储层 /
- 红河油田 /
- 鄂尔多斯盆地
Abstract: The diagenesis types, distribution characteristics and main controlling factors of the tight sandstone reservoir in the 8th member of Triassic Yanchang Formation (Chang 8) in the Honghe Oil Field, Ordos Basin, were systematically studied by using thin sections, scanning electron microscopy and electron probe. The Chang 8 reservoir in the study area is currently in the middle A diagenesis stage. The diagenesis types related to the reservoir quality mainly include compaction, dissolution, calcite cementation, kaolinite cementation and chlorite cementation. The isolated thin layer sand body has a high plastic mineral content and was deposited in the channel flanks and upper reaches of the river. The diagenesis of this sandstone is characterized by strong compaction, weak dissolution and cementation, forming strongly compacted diagenetic facies. The stacked thick sand body was deposited in the center of the river. The top and bottom sand bodies are strongly cemented by calcite, while those in the central part developed multiple diagenetic sequences corresponding to different sandstone lithofacies types. The middle-fine sandstone lithofacies, rich in rigid minerals, includes chlorite cement, and the transitional fine sandstone lithofacies mainly contains kaolinite cement or middle calcite cement.
- diagenesis /
- diagenetic facies /
- sandstone lithofacies /
- Chang 8 reservoir /
- Honghe Oil Field /
- Ordos Basin

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