| 惠民凹陷临北地区小断层识别及形成机理物理模拟 |
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| 引用本文： | 肖凡,苏朝光,吴孔友,马玉歌.惠民凹陷临北地区小断层识别及形成机理物理模拟[J].地质与资源,2019,28(6):570-575. |
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| 作者姓名： | 肖凡 苏朝光 吴孔友 马玉歌 |
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| 作者单位： | 中国石油大学(华东)地球科学与技术学院,山东青岛266580;中国石化胜利油田有限公司物探研究院,山东东营257022 |
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| 基金项目： | 国家科技重大专项"地层圈闭描述及有效性分析技术研究"（2017ZX05001003-004）；中国科学院先导科技A类专项"塔里木盆地深层断裂体系及其形成演化"（XDA14010301）. |
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| 摘 要： | 在高精度三维地震资料基础上，通过信号强化、大比例显示及蚂蚁体追踪技术，在剖面上建立了小断层的识别标志：1）同相轴的轻微错断；2）同相轴的分叉、合并；3）同相轴的挠曲、强相位转换；4）反射零乱或出现空白带；5）同相轴突然增减或消失，波组间隔突然变化，表现为不连续；6）借助蚂蚁体剖面识别小断层.通过分析临北地区不同规模断层的空间组合样式，利用平衡剖面原理，恢复了不同规模断层的演化过程.构造物理模拟显示，临北地区小断层主要为主干断层活动的派生或伴生构造，大断层附近的区域应力场是其主要形成原因，形成的小断层多与大断裂平行，呈平行式分布.
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| 关 键 词： | 小断层 识别特征 三维地震 油气藏 物理模拟 惠民凹陷 |
| 收稿时间： | 2019-02-18 |
IDENTIFICATION OF THE MINOR FAULTS IN HUIMIN SAG AND PHYSICAL SIMULATION OF THEIR FORMATION MECHANISM |
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| XIAO Fan,SU Chao-guang,WU Kong-you,MA Yu-ge.IDENTIFICATION OF THE MINOR FAULTS IN HUIMIN SAG AND PHYSICAL SIMULATION OF THEIR FORMATION MECHANISM[J].Geology and Resources,2019,28(6):570-575. |
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| Authors: | XIAO Fan SU Chao-guang WU Kong-you MA Yu-ge |
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| Institution: | 1. School of Geosciences and Technology, China University of Petroleum, Qingdao 266580, Shandong Province, China;2. Geophysical Research Institute, Sinopec Shengli Oilfield Co., Ltd., Dongying 257000, Shandong Province, China |
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| Abstract: | On the basis of high-precision 3D seismic data, through signal enhancement, large-scale display and ant body tracking technology, the identification marks of minor faults on section are established as follows:1) slight misalignment of co-phase axis; 2) bifurcation and merging of cophase axis; 3) deflection and strong phase conversion of co-phase axis; 4) reflection disorder or blank band; 5) sudden increase/decrease/disappearance of co-phase axis, abrupt change of wave group interval, showing discontinuity; and 6) using ant algorithm seismic profiles. By analyzing the spatial combination styles of different-scale faults in Linbei area, the evolution processes are restored based on the principle of balanced section. The physical simulation shows that the minor faults are the derivative or associated structures of the major fault activity, which are mainly caused by the regional stress field near the major fault, mostly parallel to the major fault and distributed in parallel. |
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| Keywords: | minor fault identification characteristics 3D seismic oil-gas reservoir physical simulation Huimin Sag |
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