【作者】 朱艳保；

【导师】 段云卿； 胡东海；

【作者基本信息】 中国地质大学（北京） ， 地质工程， 2008， 硕士

【摘要】 《泌阳凹陷古城-前杜楼三维地震采集方法研究》在分析研究泌阳坳陷古城-前杜楼地区以往的地震资料和地震采集方法的基础上,采用“论证-实测-再论证-再实测”的多次交互式三维观测系统设计方法,最终确定出最佳的障碍区炮检点位置,解决了大型城镇和大型水库炮检点布设难题,大大减少了剖面缺口。利用大比例地图和构造图,进行基于地理信息和地质信息的采集方法研究,根据不同的勘探目标,采用多种观测系统渐变施工,既攻克了大障碍地区施工难题,又兼顾了该区目标层深浅变化快的特点,提高了采集质量。新采集资料具有较高的信噪比和分辨率,地震主频达45赫兹以上。处理结果显示,分辨率明显提高,能够分辨20-30m的小断层,剖面能够准确、清楚的反映出该区的构造面貌;缺口深度≦0.3妙;保证了深层覆盖次数和浅层的连续性。同时为查清、落实凹陷西部的构造特征及沉积地层特征,开展储层的预测研究工作,寻找构造、岩性等隐蔽油气藏,奠定了坚实的基础。更多还原

【Abstract】 Based on the analysis of Gucheng-Qiandulou area’s previous seismic data and its acquisition, this thesis utilized Multi-Interactive 3-D observation system designed through“Demonstration - Measurement - Re-demonstration - Re-measurement”and determined eventually the optimized shock measure points in the obstacle area; meanwhile, the difficult problem of shock measure points arrangement in a big town or a big water storage was solved and the profile gaps had also been minimized greatly.Utilizing large-scale map and structure map, Research on the acquisition method based on geographic and geological information, using various observation systems to explore according to different exploration objects, this thesis not only solved the difficult problem of working in a big-obstacle area, but also enhanced the acquisition quality considering the characteristic of interested formation’s sharp change on depth in this area.New data acquired have the higher Signal-to-Noise and higher resolution, and the seismic frequency reaches 45Hz. The result shows the following achievements: the data resolution has been improved obviously so that 20~30m faults can be differentiated, and sections can show the structure of this area clearly and exactly; gap depth is smaller than 0.3m, to ensures the overlapping times of deep intervals and the continuity of shallow intervals; it is also useful for making clear the characteristics of structure and sedimentary strata in west area of the Depression, useful for reservoir prediction, useful for finding covert reservoirs, such as structural and lithology reservoirs.更多还原