[1]杨迪生,肖立新,阎桂华,等.准噶尔盆地南缘四棵树凹陷构造特征与油气勘探[J].新疆石油地质,2019,(02):138.[doi:10.7657/XJPG20190202]
 YANG Disheng,XIAO Lixin,YAN Guihua,et al.Structural Characteristics and Petroleum Exploration in Sikeshu Sag, Southern Margin of Junggar Basin[J].Xinjiang Petroleum Geology,2019,(02):138.[doi:10.7657/XJPG20190202]
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准噶尔盆地南缘四棵树凹陷构造特征与油气勘探()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2019年02期
页码:
138
栏目:
出版日期:
2019-03-28

文章信息/Info

Title:
Structural Characteristics and Petroleum Exploration in Sikeshu Sag, Southern Margin of Junggar Basin
文章编号:
1001-3873(2019)02-0138-07
作者:
杨迪生1肖立新1阎桂华1魏凌云1汪新2王心强1
(1. 中国石油 新疆油田分公司 勘探开发研究院 地球物理研究所,乌鲁木齐 830013;2. 浙江大学 地球科学学院,杭州 310027)
Author(s):
YANG Disheng1 XIAO Lixin1 YAN Guihua1 WEI Lingyun1 WANG Xin2 WANG Xinqiang1
(1.Geophysical Institute, Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Urumqi, Xinjiang 830013, China; 2.School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China)
关键词:
准噶尔盆地南缘四棵树凹陷叠加构造构造层油气成藏条件
Keywords:
southern margin of Junggar basin Sikeshu sag superimposed structure structural layer hydrocarbon accumulation condition
分类号:
TE111.2
DOI:
10.7657/XJPG20190202
文献标志码:
A
摘要:
四棵树凹陷位于准噶尔盆地西北缘与南缘构造体系的交会区,构造变形复杂,落实构造圈闭是油气勘探的关键。采用构造建模思路和技术方法,通过二维和三维地震几何学以及运动学分析,结合区域构造成图,建立四棵树凹陷“两期叠加、双层构造”的变形模式。研究认为,以白垩系吐谷鲁群泥岩、古近系安集海河组泥岩滑脱层为界,四棵树凹陷发育深、浅2个构造层,深部构造层是中生代北西—南东向走滑断裂和雁列式分布褶皱,浅部构造层是新生代滑脱冲断构造。两期构造垂向叠置,平面展布继承中生代雁列式构造格局。通过油气成藏条件综合研究,提出四棵树凹陷构造“垂向叠置”油气成藏模式。浅部构造层油藏受断裂沟通影响,新生代断裂控制油藏分布;深部构造层紧邻生烃中心,构造圈闭形成早,有利于油气长期运聚,且晚期变形改造弱。2019年高探1井获日产千方油气流,证实四棵树凹陷深部构造成藏条件优越。
Abstract:
Sikeshu sag is located in the intersection area of the northwestern and southern margins of Junggar basin. Because of the complex structural deformation, ascertaining traps in the area is vital for petroleum exploration. Based on 2D and 3D seismic geometry and kinematics analysis and combined with regional structural mapping, the research adopts the ideas and techniques of structural modeling to build a deformation model of "two periods of superimposition and double layered structure" for Sikeshu sag. It is considered that deep and shallow structural layers are developed in the sag by taking the Cretaceous Tugulu mudstone and the detachment layer of mudstone of Paleogene Anjihaihe formation as boundaries. The deep structural layer is mainly composed of Mesozoic NW-SE trending strike-slip faults and en echelon-like folds and the shallow structural layer is a Cenozoic detachmetn thrust structure. The two periods of structures superimposes vertically and exhibit a Mesozoic en echelon-like structural framework laterally. Based on the comprehensive research of oil and gas accumulation, a hydrocarbon accumulation model of vertical superimposition is proposed for Sikeshu sag. The reservoir in the shallow structural layer is influenced by fault connection and its distribution is controlled by Cenozoic faults; the deep structural layer is very near to hydrocarbon generation center in which structural traps formed early and late deformation was weak, which benefits long-term hydrocarbon migration. The commercial oil and gas flow with the daily production more than 1 000 tons obtained from the Well Gaotan-1 in Jan., 2019 can prove that the hydrocarbon accumulation conditions of Sikeshu sag is favorable

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更新日期/Last Update: 2019-03-28