广西宁明地区第三系沉积相研究及对储集性的控制

TERTIARY SEDIMENTARY FACIES AND THEIR CONTROLS ON THE RESERVOIR QUALITY IN THE NINGMING REGION,GUANGXI

摘要: 在总结前人资料基础上,依据岩性、古生物和地震资料,将宁明等三盆地第三系自下而上划分为:下大阐、上大闸、宁明、弄怀四个组。利用岩性、沉积特征、粒度、地震诸方面资料将本区第三系划分出:洪积扇.河流、湖岸、湖泊和沼泽等五个相,并对各种沉积微相特征进行描述。同时研究了本区第三系不同阶段的沉积相展布特征及沉积相对储集性的控制。
- 沉积相 /
- 储集性 /
- 储层评价
Abstract: The Tertiary strata in the Ningming,Haiyuan and Shangsi Basins,Guangxi can be grouped,from base upwards,into the following four formations;Lower Dazha,Upper Dazha,Ningming and Nonghui Formations on the basis of Hthologic,palaeontological and seismic data coupled with the previous data,and further be assigned to the pluvial fan fa-cies,fluvial facies,lakeshore facies,lacustrine and swamp facies in terms of lithological, sedimentological,grain size and seismic data.The present paper has also described the dis-tribution and controls of individual sedimentary microfacies on the reservoir quality during the different stages of Tertiary time.
- sedimentary facies /
- reservoir quality /
- reservoir evaluation