井间Love型导波传播特征研究  

Researches on propagation characteristics of cross-borehole Love wave

作　　者：谢海兵[1] 马在田[1] 王燕琨[2] 

机构地区：[1]同济大学 [2]华北石油管理局研究院

出　　处：《石油地球物理勘探》1998年第1期32-37,共6页Oil Geophysical Prospecting

摘　　要：本文研究了井间低速层Love型导波的振幅-深度曲线及传播特征。理论记录表明，在低速层内导波是能量的主要传播方式，且导波存在频散现象。模型研究认为，震源频率及源、检的空间位置变化是影响导波记录的重要因素。如果激发或接收位置选择合适，可以得到具有不同振型的或各振型能量分配不同的导波记录，该技术是检测低速层油藏连续性的一种有效手段。We analyse amplitude-depth curve and propagation characteristics of Lovewave in cross-borehole low velocity layer. Theoretical data show that guided wavein low velocity layer is the main propagation form of energy,and has frequency dis-persion. Modeling research says that source frequency and the location variation ofsource and receivers are the major factors which influence guided waves. We canrecord guided waves belonging to different modes,or the guided waves which belongto same mode but display different energy distributions,when source and receiversare at proper locations. The technique is an effective means for detecting the conti-nuity of 1ow velocity reservoir.

关 键 词：Love型导波 振幅 深度曲线 地震波传播 地震勘探 

分 类 号：P631.413[天文地球—地质矿产勘探]