交叉偶极子阵列声波测井在裸眼井中的应用研究  

Application study on cross dipole array acoustic logging in open hole wells

作　　者：高崇飞 苗贝[1] Gao Chongfei;Miao Bei(Downhole Operation Engineering Department,Yanchang Oilfield Co.,Ltd.,Yan′an 716000,China)

机构地区：[1]延长油田股份有限公司井下作业工程部,陕西延安716000

出　　处：《能源与环保》2023年第3期68-74,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：延长油田股份有限公司新技术项目(vcsv2020xis-c-06-10)。

摘　　要：为保证在信号衰减趋势减缓的同时,进一步丰富声波数据的种类与来源,将交叉偶极子阵列声波测井技术应用于矿井的数据采集过程中,并研究交叉偶极子阵列声波测井技术在裸眼井内的应用。选择某矿井作为实验的研究区,安装声波接收与发射装置,设计声波识别过程,结合纵波、横波、斯通利波分别对阵列声波进行提取与处理。使用交叉偶极子阵列声波测井技术分析岩石的机械特性,获取泊松比、杨氏模量、剪切模量、体积模量4个岩石力学参数的统计直方图。分析不同地层的各向异性,得到5种煤层结构内的声波主要接收方向。得到地层波形幅度和衰减趋势分析结果,依据不同波形的反射系数,获取低空渗透层的方向。In order to ensure that the signal attenuation trend slows down while further enriching the types and sources of acoustic data,the cross dipole array acoustic logging technology is applied to the data acquisition process in mines,and the application of the cross dipole array acoustic logging technology in open hole wells is studied.This paper selects a mine as the experimental research area,install the acoustic wave receiving and transmitting device,design the acoustic wave identification process,and extract and process the array acoustic wave combined with longitudinal wave,shear wave and stoneley wave.The cross dipole array acoustic logging technology is used to analyze the mechanical properties of rocks,and the statistical histograms of four rock mechanical parameters such as Poisson′s ratio,Young′s modulus,shear modulus and bulk modulus are obtained.The anisotropy of different strata is analyzed,and the main receiving directions of sound waves in five coal seam structures are obtained.The analysis results of formation waveform amplitude and attenuation trend are obtained,and the direction of low-level permeable layer is obtained according to the reflection coefficient of different waveforms.

关 键 词：交叉偶极子阵列声波测井 矿井识别 裸眼井 声波阵列 声波幅度 

分 类 号：P631.8[天文地球—地质矿产勘探]