河流相模式与储层非均质性

近４０ 年来，通过现代河流研究和多学科结合，河成相模式已由最初的点沙坝侧迁模型发展成今日的１６ 种相模式；同时研究方法亦由单纯的垂向相序分析，发展成大露头三维研究，识别出可与现代复合坝比拟的构型要素，从而建立相模式。该文对此作了一简要回顾与评述，然后介绍一个密西西比河曲带的６ 级储层非均质性和一个辫状三角洲储层质量之受控于沉积因素。文章指出，研究者应针对研究对象，提出自己的构型要素，以更好地认识古河流。河成储层包含多级非均质性，沉积变量是储层质量和产能的主要控制因素，因此不断更新储层沉积学认识，有助于提高勘探和开发效率

FLUVIAL FACIES MODEL AND HETEROGENEITY OF FLUVIAL RESERVOIRS

Since about 40 years, by the studies of modern rivers and the combination of multiple academic subjects , fluvial facies model has developed from the early point bar model to today's 16 fluvial styles. In the meantime, the corresponding methodology has shifted from purely analyzing the vertical facies order to recognizing the architecture elements comparable with modern compound bars therefore to construct facies models . In this paper, a brief review on the facies model evolution was presented, then the 6 levels of reservoir heterogeneity in a Mississippi meander belt and the depositional controls over reservoir properties in a braid delta sandstone were introduced. The paper pointed out that researcher should propose his own architecture elements to have a better understanding upon the faced paleo river, that depositional variables are main controls on reservoir quality and productivity, hence continuously renewing the knowledge about sedimentology of the reservoir would help to raise the effeciency of exploration and exploitation.