岩性油气藏 ›› 2020, Vol. 32 ›› Issue (6): 7384.doi: 10.12108/yxyqc.20200607
袁纯1,2, 张惠良2, 王波2
YUAN Chun1,2, ZHANG Huiliang2, WANG Bo2
摘要: 库车坳陷北部下侏罗统阿合组是油气勘探的重要目的层,但是岩相变化快、砂体构型复杂、储层相对致密、非均质性强,制约了油气勘探。通过建立露头基干剖面、横向砂体追踪、砂体构型精细描述、针对性取样和储层实验分析,分析砂体的垂向建造、横向展布规律及不同岩相的储集性能,结果表明:阿合组纵向上有大型砂砾质辫状水道-侧积坝-纵向砂坝、中型砂砾质辫状水道-横向砂坝-滨湖复合砂体、小型砂质辫状水道-斜列砂坝等3种沉积建造。其中中型辫状水道-横向砂坝储集性能相对较优,有利储层主要是槽状交错层理砂质细砾岩、板状交错层理中砂岩和低角度平行层理细砂岩。研究区下辫状河三角洲平原和前缘均是有利勘探方向。
中图分类号:
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