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yun nan lu liang pen di xin jin xi ci ying zu jin an shui xia shan chen ji te zheng
Author(s): 
Pages: 4-6
Year: Issue:  2
Journal: PETROLEUM GEOLOGY AND ENGINEERING

Keyword:  近岸水下扇沉积特征沉积微相上新统陆良盆地;
Abstract: 陆良盆地上新统茨营组主要为一套扇三角洲沉积体系的陆相断陷湖盆沉积,其中,在茨二、三段盆地东部边缘断阶带发育一套近岸水下扇沉积.根据岩性组合特征、沉积序列、测井和地震响应等划分出扇根、扇中和扇端三个亚相.钻探资料显示在扇中亚相和扇端亚相识别出辫状水道微相、辫状水道间微相、扇中前缘微相、扇端泥微相和扇端席状砂微相5个沉积微相,扇中辫状水道是重要的储集砂体类型.结合成藏分析,认为该区近岸水下扇体具备形成构造-岩性气藏的务件,储层的分布对气藏富集具有明显的控制作用,沿形成扇体的辩状水道和扇中前缘砂体应成为扩展勘探领域的有利区带.
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