XMAC-Ⅲ仪器设计优势分析  

Analysis on the design advantages of XMAC-Ⅲ instrument

作　　者：冯利军[1] 丁进强 周彦球[1] 赵亚成 

机构地区：[1]大庆钻探工程公司测井公司

出　　处：《石油仪器》2012年第5期29-31,8,共3页Petroleum Instruments

摘　　要：文章根据美国贝克休斯公司XMAC-Ⅲ与XMAC-Ⅱ仪器从XMAC声波波形的处理流程:仪器响应预处理分析、地面采集软件预处理分析、解释软件处理分析这三个方面对XMAC-Ⅲ仪器、XMAC-Ⅱ仪器进行对比分析,找到XMAC-Ⅲ仪器测井效果更好的原因优势体现在两个方面:第一个是XMAC-Ⅲ仪器在软地层中,偶极源波形相对于XMAC-Ⅱ仪器能更好地抑制干扰波,有效地提取横波;第二个是XMAC-Ⅲ仪器中四极子测量的纵波时差波形中,14kHz的低通滤波器电路有利于硬地层中纵波的提取。In order to find out the reason why XMAC-Ⅲ has an ability of getting better logging results,we compared XMAC-Ⅲ with XMAC-Ⅱ in waveform processing flow by using Multisim circuit simulator in three different aspects:instrument response pre-processing,acquisition software pre-processing and interpretation software processing.Consequently,we find that it has nothing to do with ground acquisition software or interpretation software,but depends much on the instrument circuit design.Through an circuit simulation analysis with Multisim,the advantages of XMAC-Ⅲ are found out as following:first,it can suppress interference waves better than XMAC-Ⅱ to extract shear waves from the dipole source waveforms in soft formations;second,for compressional waveforms measured by the quadrupole measurement in hard formations,14KHz low-pass filter circuit of XMAC-Ⅲ is conducive to extraction of longitudinal waves.

关 键 词：XMAC-Ⅲ XMAC-Ⅱ Multisim电路仿真 仪器响应 对比分析 

分 类 号：P631.43[天文地球—地质矿产勘探]