蘑菇状火山岩模型的二维地震正演模拟分析  

2D seismic forward modeling analysis of mushroom-shaped volcanic rock model

作　　者：李东庆[1,2,3] 魏建新[1,2,3] 狄帮让[1,2,3] 高峰[1,2,3] 兰晓光[1,2,3] 

机构地区：[1]中国石油大学(北京)地球物理与信息工程学院,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中国石油大学(北京)CNPC物探重点实验室,北京102249

出　　处：《东北石油大学学报》2016年第5期94-101,共8页Journal of Northeast Petroleum University

基　　金：国家科技重大专项(2016ZX05007-006)

摘　　要：为了研究蘑菇状火山岩储层的地震响应特征,根据地质资料构建蘑菇状火山岩地质模型,分别采用物理模拟和数值模拟方法对蘑菇状火山岩模型进行正演模拟。结果表明,蘑菇状火山岩的地震响应特征总体趋势一致,即火山岩上部外形为蘑菇头状,与其结构形态类似;火山岩下部产生"蘑菇无根"现象,在细节上存在差异。物理模拟方法得到的地震波信息更加丰富,且在模拟过程中地震波的传播方式更符合地下实际情况;数值模拟方法没有噪音干扰,资料品质好,且可以得到波场快照信息。两种正演模拟方法具有互补性,为研究复杂地质情况下的火山岩地震响应特征提供更好的支持。To study the seismic response characteristics of mushroom-shaped volcanic reservoir,we made mushroom-shaped volcanic physical model based on actual volcanic geological data then physical modeling and numerical modeling results were compared.The results show that the seismic response characteristics of the mushroom-shaped volcanic rock are consistent with the overall trend,the upper part of volcanic rock is in the shape of a mushroom head shape,and similar with structure;The lower part of the volcanic rock produce mushroom-rootless phenomenon,there are differences in the details.The seismic wave obtained by physical simulation is more abundant,and the transmission mode is more in line with the underground situation.The numerical simulation without noise interference,the quality of the data is good,and the wave field snapshot information can be obtained.The complementary for each other could provide a better means for the study of volcanic seismic response in the case of complex geological feature.

关 键 词：蘑菇状火山岩 物理模拟 数值模拟 地震响应 

分 类 号：TE19[石油与天然气工程—油气勘探] P631.4[天文地球—地质矿产勘探]