走滑断裂对断裂系统的控制作用:塔里木盆地中部三维地震资料的启示

IF 1.1 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
J. Liu, Wei-dong Gong, Peng Wang, Yingjun Yang, Jun You
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引用次数: 0

摘要

塔里木盆地中部由于其石油储量而备受关注,特别是最近在顺北油气田商业发现的奥陶系碳酸盐岩储层。本文对塔里木盆地中部三维地震解释进行了系统分析。结果表明,存在几个主要的走滑断层和相关的断裂系统。这些主要走滑断层的特征在下中奥陶统表现出较低的正花或负花结构,而上奥陶统的断层由于区域应力场而表现出正常的运动感。此外,这些主要的走滑断层通常会产生各种规模的裂缝。主要走滑断层不同区段的断裂系统在特征上存在显著差异。此外,还提出了两个模型来描述挤压和伸展环境中的走滑断层相关断裂系统。断裂系统的发育变化很大,取决于走滑断裂带的规模。在小规模剪切带或走滑断裂带中,断裂系统通常沿断裂面发育。相反,在大规模走滑断裂带中,断裂系统通常沿两侧断裂带发育。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The controls of strike-slip faults on fracture systems: insights from 3D seismic data in central Tarim Basin, NW China
The central Tarim Basin has garnered significant attention due to its petroleum reserves, particularly the recent commercial discovery of Ordovician-age carbonate reservoirs in the Shunbei Oil and Gas Field. This study presents a systematic analysis based on 3D seismic interpretation in the central Tarim Basin. The results reveal the presence of several major strike-slip faults and associated fracture systems. The characteristics of these major strike-slip faults exhibit a lower positive or negative flower structure in the Lower-Middle Ordovician, while faults in the Upper Ordovician display a normal sense of movement attributed to the regional stress field. Furthermore, these major strike-slip faults commonly give rise to fractures at various scales. The fracture systems in different segments of the major strike-slip faults exhibit notable differences in their characteristics. Additionally, two models are proposed to describe strike-slip fault-associated fracture systems in both compressional and extensional settings. The development of fracture systems is highly variable and depends on the scale of the strike-slip fractured zone. In small-scale shear zones or strike-slip fractured zones, the fracture systems typically develop along the fracture plane. Conversely, in large-scale strike-slip fractured zones, the fracture systems commonly develop along the fault zone on both sides.
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来源期刊
CiteScore
2.50
自引率
8.30%
发文量
126
期刊介绍: ***Jointly published by the American Association of Petroleum Geologists (AAPG) and the Society of Exploration Geophysicists (SEG)*** Interpretation is a new, peer-reviewed journal for advancing the practice of subsurface interpretation.
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