收稿日期: 2007-10-19
修回日期: 2008-01-30
网络出版日期: 2008-04-10
Relationship between the Yangchang Formation Top’s Paleogeomorphologyand the Earlier Jurassic Petroleum, Suijing Oilfield
Received date: 2007-10-19
Revised date: 2008-01-30
Online published: 2008-04-10
陶辉飞;王多云;李树同;王彬;何善斌;栾琴; . 绥靖油田延长组顶部侵蚀古地貌与侏罗系油藏关系分析[J]. 天然气地球科学, 2008 , 19(2) : 183 -187 . DOI: 10.11764/j.issn.1672-1926.2008.02.183
This article uses the sediment thickness impression method to rebuild the palaeogeomorphology of the Yangchang Formation top, and reveals that the palaeogeomorphology is “two incised valleys, two slopes and a remnant earthen mound in the center”. The study on the relationship between the palaeogeomorphology and the Jurassic reservoir shows that the Jurassic reservoir is mainly distributed on the high places of the slopes and the remnant earthen mound, and the mouth of the remnant earthen mound and its adjacent slopes are the main places of oil and gas accumulation. In terms of the three aspects of storage, transportation and preservation, the paleogeomorphology of the Yanchang formation top controls the earlier Jurassic reservoir: the eroded slopes and the remnant earthen mound control the upper sedimentary conditions sedimentary facies sandstone distribution, the incised valleys are not only the migration channels but also controls the migrating direction, and the paleogeomorphic high land controls the relatively high places of structures formed from differential compaction.
Key words: Yangchang Formation; Paleogeomorphology; Impression method; Jurassic
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