岩性自下而上由粗变细的演变序列叫正韵律。 常在泛滥平原曲流点坝砂、高弯曲分流河道砂等砂体中出现。
... positive reserves 确切储量 positive rhythm 正韵律 positive rollover 正倾向倒转 ...
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In compounding rhythm and positive rhythm oil layers, it is very evidence that displacement efficiency of oil by water subsection diversity which sandwich causes inside layers.
在复合韵律和正韵律油层中，夹层所引起的层内水驱油效率的分段性差异相当明显。
参考来源 - 孤东油田七区西6～（3+4）单元剩余油研究与层内分段注水挖潜·2,447,543篇论文数据，部分数据来源于NoteExpress
水平井技术是挖潜特高含水期正韵律厚油层顶部剩余油富集区最有效的方法。
Horizontal well tech is an effective way to dig potential of residual oil enrichment part above normal rhythm thick oil layer with high water content.
水平井技术是挖潜特高含水期正韵律厚油层顶部剩余油富集区最为有效的方法。
Horizontal well is the most effective method for tapping the rich residual oil zone on the top of thick positive rhythm reservoir in extra-high water-cut period.
储层非均质性较强，纵向上渗透率的变化表现出正韵律和复合正韵律的组合特征。
Heterogeneity is strong, vertical permeability showed positive rhythm and rhythm is a combination of complex features.
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