河流相储层细分与对比中存在的问题

针对目前油田对储层划分日益精细的要求,人们在应用最初的“旋回对比,分级控制”、高分辨率层序地层学、以及如今的储层建筑结构层次分析法将储层进一步划分至单砂体时,却很容易忽略砂体的成因,走入划分过细的极端。存在的问题主要有对沉积间歇面不合理的利用、机械运用等高程对比原则、依据砂层厚度决定是否劈分等。本文对河流相储层细分对比中容易出现的问题进行了详尽的剖析,指出层次细分对比一定要对沉积过程和砂体的成因作出合理解释,并求使各种地层对比、划分方法有机结合起来,取长补短,达到精细研究储层的目的。

Problems in the subdivision and correlation of fluvial reservoir

According to the request that the reservoir subdivision has to be more and more delication of oil fields,when apply methods like isochronous correlationof the cycles,high resolution sequence stratigraphy and principle of architecture-element analysis to subdivided fluvial reservoir to single sand,it's easy to run to an extreme of subdivide too fine because of neglecting the genesis of sandbody.This paper give an exhaustive analysis of existent problems such as illogical use of sedimentary interruption,use equielevation correlation automatically,according to sandbody's thickness to determine wether it should be split etc.And indicated that the subdivision and correlation of fluvial reservoir must be given an rational genesis explanation,and strive to synthesize all kinds of correlation methods to research fluvial reservoir subtly.