川中 AY 地区须家河组地震层序与物源分析
网络出版日期: 2014-02-05
基金资助
国家重大科技专项“四川盆地岩性油气藏富集规律与目标评价”(编号:2011ZX05001-005)部分研究成果
Seismic sequence and provenance analysis of the Upper Triassic Xujiahe Formation in AY area, Central Sichuan Basin
Online published: 2014-02-05
顾忠安 , 郑荣才 , 王亮 , 梁西文 . 川中 AY 地区须家河组地震层序与物源分析[J]. 岩性油气藏, 2014 , 26(1) : 45 -51 . DOI: 10.3969/j.issn.1673-8926.2014.01.007
AY area which shows a monoclinal structure in the direction of northwest is located in the central part of gentle structure zone, Central Sichuan Basin, Southwest China. This paper carried out seismic sequence research of the Upper Triassic Xujiahe Formation with comprehensive analysis of geological, seismic and well logging data. The result shows that the source of the Xujiahe Formation may be located in the south or southeast of the AY area by means of analyzing onlap direction of seismic event, TWT thickness contour map of seismic sequences and incised valley trend. Sandstone composition data excluded the possibility that Luzhou paleo-uplift become the provenance. We supposed that “Qianzhong ancient land” and “Jiangnan ancient land” may be the source of the Xujiahe Formation in Central Sichuan Basin. This viewpoint gives some hints to the further exploration and prospect of the Xujiahe Formation in Sichuan Basin.
Key words: shale reservoir; fracture; reservoir characteristics; Da’anzhai segment; Fuling area
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