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方法 针对辽河盆地东部凹陷黄金带、于楼、热河台 (简称黄、于、热 )等火山岩发育区地震资料处理中存在的问题及难点 ,采取全区振幅能量的调整 ;叠前提高信噪比和分辩率 ;速度分析 ;去多次波 ;谱白化 ;消除偏移画弧 ,完成复杂构造的一步法偏移等一系列技术措施 ,对该区原地震资料进行处理方法研究。目的 弄清辽河盆地东部凹陷中段火山岩发育区复杂构造带的形态 ,寻找油气藏。结果 用该处理技术对黄、于、热火山岩发育区 380km2 的三维连片资料进行处理 ,其结果较原处理剖面有明显改进 ,进一步搞清了桃园—黄金带、于楼、热河台等区的构造特征及中央构造带的小断裂情况 ,并从中发现了多个有利圈闭。结论 本文总结出的三维地震资料处理技术 ,流程完整、实用、合理 ;加强火山岩强反射层间的弱反射、衰减多次波、消除火山岩强反射层所致的偏移画弧干扰等措施是可行的。
In order to solve the problems and difficulties in seismic data processing of volcanic rocks in the eastern depression of Liaohe Basin, such as the gold belt, Yulou, Rehetai (Huanghe, Yuzhe, etc.), the amplitude energy of the whole region was adjusted. Ratio analysis and resolution; velocity analysis; de-multiplexing; spectral whitening; eliminating offset painting arcs and completing one-step migration of complicated structures, and a series of technical measures to deal with the original seismic data processing methods. Aim To clarify the morphology of complex tectonic belts in the volcanic rock development zone in the middle segment of eastern sag of Liaohe Basin and to search for reservoirs. Results Three-dimensional contiguous data of 380 km2 in the Yellow River, Yuzhu, and Hot Volcanic Rocks Development Zone were processed by this treatment technique. The results were significantly improved compared with the original treatment profile, and further clarified the Taoyuan-Huangjin Belt, Yulou Building, And the small faults in the central tectonic belt, and found a number of favorable traps. Conclusion The three-dimensional seismic data processing technology summarized in this paper is complete, practical and reasonable; it is feasible to strengthen the weak reflection between the strong reflection layers of volcanic rocks, attenuate the multiple waves and eliminate the offset arc caused by the strong reflective layer of volcanic rocks. of.