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八面河面南区储层主要为三角洲前缘水下分流河道、河口砂坝、远砂坝和席状砂微相细砂岩、粉砂岩砂体 ,其中水下分流河道微相砂体储层物性最好 ,非均质较弱 ,河口砂微相坝砂体储层物性较好 ,非均质最弱 ,远砂坝和席状砂微相砂体物性较差 ,非均质性较强 ,通过综合评价认为远砂坝和席状砂微相砂体是最有利的油气储集相带 ,而水下分流河道、河口砂坝微相砂体有利于油气运移 ,但不利于油气保存 ,因此不是研究区主要的储集相带
The reservoirs in the southern area of the Bamianhe River are mainly deltaic submarine distributary channel, estuary sand bar, distal sand bar and sheet sand microfacies fine sandstone and siltstone sand body, in which underwater distributary channel microfacies sand reservoir physical properties The best and the less heterogeneous is weaker. The estuarine sandstone microfacies reservoir has better physical properties and the weakest heterogeneity. The far sand bar and the sand-like sand facies are poor in physical property and strong inhomogeneity, The comprehensive evaluation shows that the distal sand bar and the mafic sand body are the most favorable oil and gas reservoir facies belts, while the underwater distributary channel and estuary sand bar microfacies are favorable for oil and gas migration, but not conducive to the preservation of oil and gas. Therefore, it is not the main reservoir facies zone in the study area