学术
准噶尔盆地乌夏地区侏罗系层序与地层发育特征
杨怀宇[1] 陈世悦[1] 杨俊生[1] 吴采西[2]
[1]中国石油大学地球资源与信息学院,山东东营257061 [2]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000
摘 要:
通过在地震、钻井、测井等资料上寻找识别层序界面标志,综合运用井-震联合、联井格架层序分析等方法,建立了准噶尔盆地西北缘乌夏地区侏罗系的层序划分方案。研究表明,该区侏罗系共划分为2个超层序,7个层序,第1个超层序包括JSQ1、JSQ2、JSQ3、JSQ4、JSQ5层序（相当于下侏罗统八道湾组、三工河组和中侏罗统西山窑组）;第2个超层序包括JSQ6、JSQ7层序（相当于中侏罗统头屯河组、上侏罗统齐古组）。研究区侏罗系各层序的地层展布在平面上呈现一种早期退积、晚期进积的旋回,地层发育特征为沉积建造与改造共同作用的结果。[著者文摘]
文章出处:
《新疆石油地质》-2007年28卷4期 -437-440页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1001-3873（2007）04-0437-04
Sequence Division and Stratigraphic Evolution of Jurassic in Wu-Xia Area, Junggar Basin
YANG Huai-yu, CHEN Shi-yue, YANG Jun-sheng, WU Cai-xi （1. Faculty of Geo-Resources and Information, China University of Petroleum, Dongying, Shandong 257061, China; 2.Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China）
Abstract:
This paper presents the sequence division scheme of Jurassic in Wu-Xia area in northwestern margin of Junggar basin by means of logging-seismic data analysis and well-connecting framework sequence analysis, through the seismic, drilling and well log data to find out the identification marks of the sequence boundaries. The result shows that the Jurassic system could be divided into two supersequences and seven sequences. The first super-sequence includes JSQ1, JSQ2, JSQ3, JSQ4 and JSQ5, corresponding to the Badaowan and Sangonghe formations of Lower Jurassic and the Xishanyao formation of Middle Jurassic. The second super-sequence includes JSQ6 and JSQ7, corresponding to the Toutunhe formation of Middle Jurassic and the Qigu formation of Upper Jurassic. All the sequences occur in a cycle of early retrogradation and late progradation in plane. The strata characteristics are resulted from combination of sedimentary formation and reformation.[著者文摘]
Key words:
Junggar basin; Wuerhe-Xiazijie area; Jurassic; stratigraphic sequence division; sequence boundary
基金资助:
致谢：研究过程中得到了新疆油田分公司勘探开发研究院何周、刘振宇诸先生以及岩心管理室的同志们的大力帮助,在此表示衷心感谢!
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