【摘要】 基于深水断裂地区的地震偏移剖面建立深水断裂结构地层地震地质模型;基于射线正演模拟及地震波在弹性分界面上的能量分配,计算不同偏移距范围内的覆盖次数及其反射波平均振幅,基于这些参数来确定靶区地震勘探最优采集参数。分析结果表明,靶区深水断面使得射线偏折得严重必须增加排列长度,才能使得断面波能得到较好的偏移成像,同时,指出在复杂断裂地区地震勘探必须选择合适的排列长度和覆盖次数才能确保保幅成像处理,针对靶区,勘探排列长度范围应在8000~10000m。更多还原

【Abstract】 The seismic-geology model is built based on the seismic migration section of fractures in deepwater in this paper.Based on the theory of ray forward modeling and the energy distribution of seismic in the elastic interface,folds of different offset and reflection amplitude are calculated,and then seismic acquisition parameters are selected.The results show that because of fractures in deepwater,the ray is deflected.Therefore,array length must be increased in order to migrate the waves from fractures.At the same time,the work indicates that in complicated fractured area,proper array length and folded numbers are critical for amplitude-preserved image processing.更多还原