南堡凹陷分期异向伸展变形叠加特征来自砂箱物理模拟实验的启示.pdf

第28卷第1期
现代地质
Vol 28 No. I
2014年2月
GEOSCIENCE
Feb.2014
南堡凹陷分期异向伸展变形?加特征:
来自砂箱物理模拟实验的启示
梁杰…2,于福生,刘国玺,王童奎,李定华,马査
(1.中国石油大学油气资源与探测国家重点实验室,比京102249:2.中海石油(中国)有限公深圳分公同,广东广州510240
3.中同行油大然气股份有限公司冀东油川勘探井发研究院,河比唐山063004
摘要:在前人关于南堡凹陷新生代断裂系统形成机制构造物理模拟验的基础上:,针对南堡凹陷典型沉积时期断裂系
统分布规律,进一步细化、分阶段展了研究区不同沉积时期的构造在不同先存基底条件下的平砂箱物理模拟实验,
探讨了南堡四陷新牛代断裂系统形成的主控因素。研究结果表明:(1)南保凹陷新生代构造具有分期异向仲展変形叠加
的特征,是两期不向伸展方向构造変形叠加的产物;(2)NE-SW向断裂系统是在沙河街时期近NW-SE向伸展作用下
形成的;近FW向断裂系统是白东雪期以来在近SN向仲展作用下形成的;东営早期是南堡川陷应力体制发生转变的
关键时期;(3)不同积时期的构造形态受控于特定的边界儿何条件、基底非均匀性及先存断裂的展布特征。
关键词:南堡凹陷;新生代断裂系统;主控因素;物理模拟实验
中图分类号:P542;T"F121.1
文献标志码
文章编号:1000-8527(2014)01-0139-10
Deformation Superimposition Characteristics Resulting from Stretching
Direction Changes in Nanpu Sag: Insight from Physical Modeling
IIANGJIE'-, YU Fu-sheng, I,IU Guo-xi, WANG Tong-kui, I Ding-hua, MA Kui
(1. State Key Laborator of Petroleam Resources nd Prospecting, China nilersitr of Petroleum, Being 102249, China
2. Shenzhen Branch Company ofo td. uangzhou, uangdong 510240, China
3. Exploration and Dewelopment Research Institute, Jidong i field Company, Petrochina, Tangshan, lebei 063004, China)
Abstract According to the comparison of the previous modeling results and the actual geological conditions in
Nanpu sag, different series of physical models which are in different stretching directions and different pre-exisl-
ing basin structures have been conducted. Furthermore, the Cenozoic fault systems in Nanpu sag are discussed.
The results can be concluded as follows: (1)The Cenozoic fault systems in Nanpu sag are the result of two
phase extensions with different stretching directions. (2 )The NE-SW fault systems had undergone NW-SE
extension during the Shahejie depositional period while the EW fault systems had undergone SN extension since
Dongying depositional period. The early Dongying period witnessed the changes of regional stress direction of
Nanpu sag. (3 )The structural characteristics in different depositional periods were controlled by particular
boundary geometry, basal heterogeneity, and distribution of pre-existing faults
Key words Nanpu sag; Cenozoic fault system; main control factor; physical simulation
了四陷的形成与演化5。关于南保四陷断裂系
统的成因机制,有4种不同的观点:(1)南保四陷
南堡四陷新生代断裂系统十分发育,并控制属于NW-SE向伸展与柏各庄断层的左行走滑作
收稿日期:2013-01-04;改回日期:2013-11-13;责任编辑:潘令枝
基金项目:国家科技重人专项项凵“南堡回陷油气富集规律与增储领域”(2011zx05006)。
作者简介:梁杰,女,硕十,1986年出生,构造地质学专业,主要从事油区构造解析、构造物理模拟方的研究工作。
Email:liangjie105@126.com