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川东北地区长兴组-飞仙关组碳酸盐岩台地层序充填结构及成藏效应
石油与天然气地质
2009年 30卷 第No.5期
阅读：109
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Title
Sequence styles and hydrocarbon accumulation effects of carbonate rock platform in the Changxing-Feixianguan formations in the northeastern Sichuan Basin
作者
陈洪德
钟怡江
侯明才
林良彪
董桂玉
刘家洪
Authors
Chen Hongde
Zhong Yijiang
Hou Mingcai
Lin Liangbiao
Dong Guiyu
Liu Jiahong
摘要
川东北地区长兴组和飞仙关组可分别划分为两个Ⅱ型层序:PSQ1,PSQ2,TSQ1和TSQ2。除TSQ2由TST,EHST和LHST组成以外,其他层序均由TST和HST组成。在古断裂的控制下,长兴期至飞仙关期川东北碳酸盐岩台地呈现出独特的台-盆相间以及台地内的滩-洼相间沉积格局。古断裂和相对海平面变化分别通过控制沉积格局和沉积环境的水体能量变化而制约碳酸盐生产率和产出类型,从而影响碳酸盐岩层序充填结构特征。层序充填结构中发育的各成藏要素构成了川东北礁、滩气藏完整的生储盖组合。
Abstract
The Changxing and Feixianguan formations in northeastern Sichuan Basin can both be divided into two type-Ⅱ sequences:PSQ1,PSQ2,TSQ1 and TSQ2.The TSQ2 sequence can be subdivided into TST,EHST and LHST,and the rest can be divided into TST and HST.Controlled by fossil fractures,during Changxing-Feixianguan period,unique sedimentary pattern of platform alternating with basin and shoal alternating with topographic low occurred in the carbonate rock platform in northeastern Sichuan Basin.The fossil fractures and relative sea-level changes influenced the productivity and type of carbonate by controlling sedimentary pattern and water energy change,and further influenced the sequence structures of carbonate rocks.Hydrocarbon pooling elements developed in the sequence structure constitute the integrated source-reservoir-caprock assemblages of reef and shoal gas reservoirs in northeastern Sichuan Basin.
关键词：
层序充填结构;
成藏效应;
长兴组;
飞仙关组;
川东北;
Keywords:
sequence style;
hydrocarbon accumulation effect;
Changxing Formation;
Feixianguan Formation;
northeastern Sichuan Basin;
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