It is found by dissecting the delta front sheet sands in Daqing Oilfield that though it is at outer front facies belt, there exists obvious characteristics of a water course in sheet sands.
大庆油田三角洲前缘席状砂解剖发现，即使在外前缘相带，席状砂仍然具明显的水道特征。
Relationship between sedimentary facies and hydrocarbon distribution shows that most favorable oil and gas accumulation zones occur in the mouth bar, distal bar and sand sheet.
该区沉积相与油气分布关系分析表明，河口坝、远砂坝和席状砂微相是最有利的油气聚集带。
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