准噶尔盆地北东向构造及其油气地质意义

郑孟林; 金之钧

准噶尔盆地北东向构造及其油气地质意义

郑孟林^{1, 2, 3,},
金之钧^{1, 2, 3}

1.
中国石油化工股份有限公司勘探开发研究院，北京 100083
2.
石油大学盆地与油藏研究中心，北京 102249
3.
石油大学石油与天然气成藏机理教育部重点实验室，北京 102249

基金项目: 国家重点基础研究发展规划项目(Nos.G19990 43 3 0 5;2 0 0 3CB2 14 60 4)

详细信息

作者简介:
郑孟林(1968-)，男，高级工程师，博士，主要从事含油气盆地构造分析方向的研究.E-mail：zhengmlbasin@163.corn

中图分类号: P618.130
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出版历程
- 收稿日期: 2004-03-19
- 刊出日期: 2004-07-25

NE-Trending Structures and Their Significance on Petroleum Geology in Junggar Basin

ZHENG Meng-lin^{1, 2, 3
,},
JIN Zhi-jun^{1, 2, 3}

1.
Exploration & Production Research Institute, SINOPEC, Beijing 100083, China
2.
Basin and Reservoir Research Center, University of Petroleum, Beijing 102249, China
3.
Key Laboratory for Hydrocarbon Accumulation Mechanism, University of Petroleum, Ministry of Education, Beijing 102249, China

摘要

摘要: 准噶尔盆地深、浅层构造存在差异, 通过地震、地质资料分析了准噶尔盆地发育在中、晚二叠世、三叠纪的北东向构造特征, 认为中、晚二叠世、三叠纪地层沉积受北东和北西向正断裂控制, 由北东向正断裂控制的沉积中心构成了雁列组合特征.地质力学和大地构造背景分析认为, 盆地形成期的北东向构造与边缘断裂的左旋走滑作用有关.北东向的逆冲断裂形成于或主要活动于三叠纪末的盆地挤压反转作用.成盆拉张和反转挤压作用都使得北东向构造成为有利的油气聚集带, 上叠盆地的披盖沉积对北东向油气聚集带的保存起到重要作用
- 准噶尔盆地 /
- 中、晚二叠世 /
- 三叠纪 /
- 北东向构造 /
- 反转盆地 /
- 油气聚集带
Abstract: The structures in deep and shallow strata are different in Junggar basin. The NE-trending structures developed in Middle-Late Permian and Triassic in Junggar basin have been analyzed by means of seismic and geologic data. The results indicate that the sedimentation of Middle-Upper Permian and Triassic is controlled by NE- and NW-trending normal faults. Depo-centers controlled by NE-trending faults show an echelon pattern. The NE-trending structures formed in the basin formation result from the sinistral strike-slip movement of marginal faults. NE-trending reverse faults mainly formed on the end of Triassic because of the basin inversion. The belts of NE-trending structures during extension and inversion stages are (available) for hydrocarbon accumulation. The draping sediments of post-Triassic period superposed on the middle-late Permian and Triassic basin are very important for the preservation of oil and gas.
- Junggar basin /
- Middle-Late Permian /
- Triassic /
- NE-trending structure /
- inverted basin /
- oil and gas accumulation belt

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图 1 准噶尔盆地下断裂系统与中—上二叠统、三叠系沉积中心叠合

1.盆地边界; 2.钻井; 3.逆冲断裂; 4.中—上二叠统 > 2 000 m厚度区; 5.中—上二叠统 > 1 500 m厚度区; 6.中—上二叠统 > 1 000 m厚度区; 7.中—上二叠统残余分布区; 8.三叠系沉积中心区; 9.北东向断裂形成的隆起区

Fig. 1. Superposed map of lower fault system and depression area of Middle-Upper Permian and Triassic

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图 2 准噶尔盆地典型结构剖面

a.白家海凸起结构剖面(据胡平等, 2002; 张学军, 1999); b.99SN4地震地质解释剖面; c.ZD99-3地震地质解释剖面

Fig. 2. Structural section of Junggar basin

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图 3 准噶尔中、晚二叠世—三叠纪盆地演化应力分析

a.中、晚二叠世—三叠纪盆地形成应力场; b.三叠纪末盆地反转改造应力场; 1.边界走滑断裂; 2.正断裂、推测正断裂; 3.逆冲断裂; 4.沉积坳陷

Fig. 3. Stress analysis of formation and evolution of Junggar basin in Middle and Late Permian and Triassic

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图 4 准噶尔盆地油气聚集带分布

1.油气聚集带及名称; 2.盆地一级构造区划线; 3.盆地二级构造区划线; 4.油气田; 5.油气井; 6.钻井; Ⅰ.准噶尔西北缘油气聚集带; Ⅱ.石南-达巴松油气聚集带; Ⅲ.石西-莫北油气聚集带; Ⅳ.石彩湾-白家海油气聚集带; Ⅴ.帐东断褶带油气聚集带; Ⅵ.准噶尔南缘油气聚集带

Fig. 4. Distribution of oil and gas accumulation belt in Junggar basin

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