有效储层的成因分析认为，有效砂体以孤立状或条带状为主。
According to the analysis of reasons to generate the effective reservoirs, the effective sand bodies most are independent or strip-apparent.
由于受古地形及沉积物源的控制，砂体沿北东南西向呈条带状分布。
Controlled by paleotopography and sediment source, sand bodies had a banding distribution along the northeast-southwest direction.
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