天然气地质学

琼东南盆地新构造运动及其对晚期油气成藏的控制

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  • 中海石油(中国)有限公司湛江分公司,广东 湛江524057
朱继田(1974-),男, 湖南娄底人,工程师,主要从事南海深水区地质研究.

收稿日期: 2010-05-06

  修回日期: 2011-01-16

  网络出版日期: 2011-08-10

Feature of Neotectonism and Its Control on  Late Hydrocarbon Accumulation in Qiongdongnan Basin

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  • Zhanjiang Branch of CNOOC Ltd.,Zhanjiang 524057,China

Received date: 2010-05-06

  Revised date: 2011-01-16

  Online published: 2011-08-10

摘要

琼东南盆地受深部构造、周边各大板块运动及南海扩张所形成的区域应力场的控制,发育了新构造运动。新构造运动对琼东南盆地烃源演化、储层发育、圈闭形成具有重要的控制作用,同时新构造运动形成的晚期断裂,沟通了深部烃源层和深浅目的层,有利于古近系、新近系纵向叠置复式成藏。琼东南盆地东部和南部的陵南低凸起、松南低凸起、长昌凹中隆起带和宝岛北斜坡,古近系与新近系均发育良好储盖组合,晚期断裂发育,油气纵向运移有利,具有油气纵向叠置、横向连片复式成藏的可能,可以期待有良好的勘探前景,这些新构造运动发育地区是琼东南盆地下一步勘探的方向所在。

本文引用格式

朱继田, 裴健翔, 孙志鹏, 郭明刚, 姚哲, 杨宝成, 胡向阳 . 琼东南盆地新构造运动及其对晚期油气成藏的控制[J]. 天然气地球科学, 2011 , 22(4) : 649 -656 . DOI: 10.11764/j.issn.1672-1926.2011.04.649

Abstract

Neotectonism occurred in the Qiongdongnan basin under regional stress field action controlled by deep seated structure,movements of adjacent plates and spreading of South China Sea.Neotectonism plays an important role in the thermal evolution of source rock,reservoir development,and trap formation.A lot of  faults,which was formed later under the Neotectonism action,caused the deep hydrocarbon source interconnect with the shallower reservoirs.The vertical interconnection of hydrocarbon source and reservoir is favorable for hydrocarbon accumulation in Paleogene and Neogene.The neotectonisms widely exist in the east and south of Qiongdongna basin, such as Lingnan uplift,Songnan uplift,Changchang uplift,and northern slope of Baodao sag.The good assemblages of reservoir and seal in Neogene and Paleogene exist in these areas above.The late-formed faults made the hydrocarbons migrating upward and accumulating in the Paleogene and Neogene reservoirs,suggesting the good exploration in the future.

 

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