Abstract: The distributary channel sand bodies in shallow water delta are one type of particularand irnportant reservoir rock.They are characterized by the following aspects:(1)Vertical sequence types varied and thickness of sand bodies changed a lot.(2) Sandstone thickness,porosity and permeability of a reservoir are distributed in a shape of belt or beanpod in sandmernber scale. (3)Sand bodies are occured randomly is space, which are controlled by pale-ogrogeaphy,tectonic structure and energy of flow. (4)Distributarv channel sand bodies compose labyrinth reservoir geological models,which may divided into equal thickness and very unequal thickness reservoir geological models.(5)It is rather difficult to develop this kind ofreservoir,well pattern locations must be reasonable.

Key words: distributary, channel, sandbody, heterogeneous reservoir, reservoir model

摘要： 浅水三角洲分流河道砂体是一类独特的重要储层类型,其主要特征有:(1)砂体垂向层序类型多样,砂体厚度变化大;(2)砂层级规模上砂体及物性的展布为条带状或豆类状形态;(3)单砂体在空间上的分布具有随机性,主要受古地形、古构造及占水流势能等因表素控制;(4)分流河道砂体为典型的迷宫式储层地质模型,可分为等厚式、不等厚式、极端不等厚式三种模型;(5)开发这类储层的油藏有一定难度,井网布置要合理。

关键词: 分流, 河道, 砂体, 非均质储集层, 储集层模型