基于慢度—时间相关的双源距全波列测井横波速度提取  

Slowness-time coherence-based extraction of shear-wave velocity from dual detector full-waveform logging

作　　者：姜文龙[1] 张晓予[1] 谢向文[1] 涂善波[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《水利水电技术》2016年第2期115-118,共4页Water Resources and Hydropower Engineering

基　　金：水利部"948"项目全波列声波测井系统关键技术研究及国产化(201411);黄河勘测规划设计公司自主开发研究项目(2014-ky05)

摘　　要：横波速度是计算岩体剪切模量的一个重要参数,在工程地质勘察中,常利用全波列声波测井获取横波速度。由于干扰以及信号采集方式的限制,全波列测井中横波波形较为模糊或叠加在纵波、斯通利波波形之上,横波速度的拾取变得十分的困难。文中运用慢度—时间相关法方法对全波列声波测井进行研究,并提出可行的横波识别方式,获得了可靠的横波速度。As the shear wave velocity is an important parameter for calculating the shear modulus of rock body,it is usually to be obtained through the dual detector full-waveform logging during the engineering geological investigation concerned. Due to the limitations from interference and single collection mode,the waveform of the shear wave in the full-waveform logging is not so clear or superposed over transverse waveform and Stoneley waveform,and then the collection of it is quite difficult. Therefore,the method of slowness-time coherence is adopted herein to study the full-waveform logging,while a feasible mode of collecting the shear wave is proposed,with which a reliable shear wave velocity is obtained as well.

关 键 词：全波列声波测井 横波速度 慢度—时间相关 

分 类 号：TV22[水利工程—水工结构工程]