四川盆地剑阁-九龙山地区长兴期与飞仙关期古地貌演化特征及其对礁滩体的控制

doi:10.11743/ogg20160607

石油与天然气地质 ›› 2016, Vol. 37 ›› Issue (6): 854-861.doi: 10.11743/ogg20160607

四川盆地剑阁-九龙山地区长兴期与飞仙关期古地貌演化特征及其对礁滩体的控制

陈辉¹, 郭海洋¹, 徐祥恺², 张本健³, 梁虹¹, 吴育林¹

1. 中国石油川庆物探公司物探研究中心, 四川成都 610213;
2. 中国石油青海油田公司采油五厂, 甘肃敦煌 736202;
3. 中国石油西南油气田分公司川西北气矿, 四川江油 621700

收稿日期:2015-11-06 修回日期:2016-10-09 出版日期:2016-12-08 发布日期:2017-01-02
作者简介:陈辉(1980-),男,博士,地震与地质综合研究。E-mail:478176859@qq.com。
基金资助:
中国石油西南油气田分公司重大科技专项（2013ZD01-02）。

Features of paleogeomorphological evolution and its control on reef flat composite in Changxing-Feixianguan Formation in Jiange-Jiulongshan region,the Sichuan Basin

Chen Hui¹, Guo Haiyang¹, Xu Xiangkai², Zhang Benjian³, Liang Hong¹, Wu Yulin¹

1. Research Center of PetroChina, CCDC Geophysical Prospecting Company, Chengdu, Sichuan 610213, China;
2. No. 5 Oil Production Plant of PetroChina Qinghai Oilfield Company, Dunhuang, Gansu 736202, China;
3. Northwest Sichuan Gas Mine of PetroChina Southwest Oil & Gasfield Company, Jiangyou, Sichuan 621700, China

Received:2015-11-06 Revised:2016-10-09 Online:2016-12-08 Published:2017-01-02

摘要/Abstract

摘要： 根据钻井、测井及三维地震资料，利用层拉平技术、切片及属性分析技术对四川盆地剑阁-九龙山地区长兴组与飞仙关组主要层序界面进行了古地貌恢复，探讨了古地貌演化特征及其对礁滩的控制作用。研究表明，该区古地貌整体具有西南高北东低的格局，在古地貌演化过程中研究区内碳酸盐台地沉积区具有由西南向北东不断扩张的趋势，反映了长兴期至飞仙关期整体海退、沉积物不断向深水充填的特征。随着台缘及台内正地形等古地貌高带的迁移，礁滩体发育有利区也随之迁移，其中剑阁地区的Lg68井-Lg63井-Lg62井一带为长兴末期继承性古地貌高地，是长兴组与飞仙关组各时期礁滩体垂向叠置发育最为有利的区域。九龙山构造主体为飞仙关组二段多期台缘滩横向迁移叠置的区域，是飞仙关组鲕滩体发育最为有利的区域。

关键词: 长兴组, 飞仙关组, 古地貌演化, 礁滩体, 剑阁-九龙山地区, 四川盆地

Abstract: Utilizing core,well logging and 3D seismic data,technologies such as horizon flattening,section and attribute analysis were used to reconstruct the paleogeomorphology environments in Changxing and Feixianguan Formations' main sequence boundaries in Jiange and Jiulongshan districts,the Sichuan Basin.The features of paleogeomorphological evolution were investigated and their control on the reef flat were discussed.Results show that paleo topography of the area is featured by higher southwestern parts and dipping down to the Northeastern parts.The carbonate platform's constant progredation from southwest to northeast during the paleo-geomorphological evolution in the area leds to features such as marine regression,sediment filling into deep water during the periods of Changxing and Feixianguan deposition.The reef flat's favorable depo-center areas were also transferred in tune with the migration of paleo-landform's high belt and platform margin.The area around wells Lg68,Lg63 and Lg62 is an inherited paleogeomorphological high grounds,representing the most favorable place for the reef flat's vertical aggredation of Changxing and Feixianguan carbonates in the Jiange district.The major positive structure in Jiulongshan area is composed of Feixianguan formation's second section,which are a set of platform margin oolitic beaches superimposed one on another in transverse and overlaying fashion.It is also the most favorable area for development of oolitic beach in Feixianguan formation.

Key words: Changxing Formation, Feixianguan Formation, paleogeomorphological evolution, reef flat, Jiange-Jiulongshan region, Sichuan Basin

中图分类号:

TE122.1

陈辉,郭海洋,徐祥恺,等. 四川盆地剑阁-九龙山地区长兴期与飞仙关期古地貌演化特征及其对礁滩体的控制[J]. 石油与天然气地质, 2016, 37(6): 854-861. doi: 10.11743/ogg20160607 Chen Hui,Guo Haiyang,Xu Xiangkai,et al. Features of paleogeomorphological evolution and its control on reef flat composite in Changxing-Feixianguan Formation in Jiange-Jiulongshan region,the Sichuan Basin[J]. Oil & Gas Geology, 2016, 37(6): 854-861. doi: 10.11743/ogg20160607

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四川盆地剑阁-九龙山地区长兴期与飞仙关期古地貌演化特征及其对礁滩体的控制

Features of paleogeomorphological evolution and its control on reef flat composite in Changxing-Feixianguan Formation in Jiange-Jiulongshan region,the Sichuan Basin

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