塔里木盆地顺南地区深层碳酸盐岩断裂和裂缝地震识别与评价

发布时间：2018-08-31 19:44

【摘要】：近年,在塔里木盆地顺南地区多条北东向走滑断裂钻遇好的油气成果,证实了走滑断裂具有控储、控藏的作用。受埋深大、信噪比低、断裂纵向断距小等因素影响,小断裂及裂缝发育区地震响应不清、描述困难。在顺南三维实际资料的基础上,分灰岩顶面及内幕两类模型开展数值正演模拟,明确不同尺度断裂地震响应特征并建立地震识别模式;依据走滑断裂地质特征及地震识别模式,分级优选了趋势面、精细相干、蚂蚁体和最大似然体等敏感技术;依据断裂预测成果从断裂性质、断裂级别、断裂分段性和缝洞发育特征等方面开展走滑断裂带描述与评价,总结认识指导区带及目标优选。
[Abstract]:In recent years, in Shunnan area of Tarim Basin, oil and gas have been obtained by drilling several strike slip faults, which proves that strike slip faults play a role of reservoir control and reservoir control. Due to the influence of large buried depth, low signal-to-noise ratio (SNR) and small longitudinal fault spacing, the seismic response of the small fault and fracture developing area is unclear and difficult to describe. On the basis of the three dimensional practical data of Shunnan, numerical forward modeling is carried out on two kinds of models, namely limestone roof and inside wall, to identify the seismic response characteristics of faults of different scales and to establish seismic identification models, and according to the geological characteristics of strike-slip faults and the seismic identification models, Sensitive techniques, such as trend surface, fine coherence, ant body and maximum likelihood body, are selected at different levels, and the description and evaluation of strike-slip fault zone are carried out according to the fault prediction results in terms of fault properties, fracture grades, fault segmentation and fracture cavity development characteristics, etc. Summarize the guiding zone and target selection.
【作者单位】：中国石化西北油田分公司勘探开发研究院;中国石化石油物探技术研究院;
【基金】：国家科技重大专项(2016ZX05005005-005)
【分类号】：P618.13;P631.4

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