煤田三维地震采区小断层解释方法及应用
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摘要
在煤田三维地震采区,现代机械化综采系统的生产能力和效益在很大程度上依赖于对小断层的精确解释.介绍了煤田三维采区小断层的3种解释方法:彩色变密度剖面识别法、连续的多线对比识别法、断层立体解释法.以山西省寺河煤矿为例,对这3种解释方法进行了详细的解剖.研究表明,彩色剖面显示技术、倾角控制下的相干体技术,配合断层立体解释技术和连续多线对比识别技术,可以较精确地解决煤田三维采区小断层的预测问题,为煤矿安全高效生产提供技术支持.
The productivity and efficiency of modern integrated miming system mostly depend upon the interpretation accuracy of small faults in coalfield 3D seismic survey. In this paper, the authors introduced 3 kinds of methods for small faults interpretation: the variable density profile, multi-lines comparison, and 3D faults depiction in 3D seismic survey of coalfield. As a case study, the authors interpreted the distribution of small faults in Sihe W-2 mining block, Jincheng coalfield. The results show that small faults in seismic survey of coal mining block can be identified accurately by the integration of the following techniques: the variable density profile magnification, the coherence cube controlled by steering, along with the 3D faults depiction and multi-lines comparison. These techniques are helpful for the high productivity and efficiency of coal mining industry.
The productivity and efficiency of modern integrated miming system mostly depend upon the interpretation accuracy of small faults in coalfield 3D seismic survey. In this paper, the authors introduced 3 kinds of methods for small faults interpretation: the variable density profile, multi-lines comparison, and 3D faults depiction in 3D seismic survey of coalfield. As a case study, the authors interpreted the distribution of small faults in Sihe W-2 mining block, Jincheng coalfield. The results show that small faults in seismic survey of coal mining block can be identified accurately by the integration of the following techniques: the variable density profile magnification, the coherence cube controlled by steering, along with the 3D faults depiction and multi-lines comparison. These techniques are helpful for the high productivity and efficiency of coal mining industry.
引文
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[2]孙家振,李兰斌.地震地质综合解释教程[M].武汉:中国地质大学出版社,2002.SUN Jiazhen,LI Lanbin.A course in geophysical and geological integrated interpretation[M].Wuhan:China University of Geosciences Press,2002.
[3]邓维森.大庆葡萄花油田构造精细解释研究[D].东营:中国石油大学,2009.DENG Weisen.Research of accurate structural interpretation in Daqing Putaohua oilfield[D].Dongying:China University of Petroleum,2009.
[4]程国峰.临13断块区沙四段断裂特征与油气聚集规律研究[D].东营:中国石油大学,2008.CHENG Guofeng.Research of faults characteristic and petroleum accumulation pattern in Shasiduan of Lin13fault blocks[D].Dongying:China University of Petroleum,2008.
[5]王志君,黄军斌.利用相干技术和三维可视化技术识别微小断层和砂体[J].石油地球物理勘探,2001,36(3):378-381.WANG Zhijun,HUANG Junbin.Identify small faults and sand body using the coherence technology and3d visualization technology[J].Oil Geophysical Prospecting,2001,36(3):378-381.
[6]王怀洪,王秀东,田育鑫.利用相干体技术探测煤矿微小构造方法研究[J].地球物理学进展,2007,22(5):1642-1649.WANG Huaihong,WANG Xiudong,TIAN Yuxin.Detect tiny structure in coal mine using coherence technology[J].Progress in Geophysics,2007,22(5):1642-1649.
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