声波变密度测井偏心影响校正及其应用  

Eccentricity Correction of Acoustic Variable Density Logging and Its Application

作　　者：刘东明 周超 王亚东 张晨 李兵 曹斌 高峰[5] LIU Dongming;ZHOU Chao;WANG Yadong;ZHANG Chen;LI Bing;CAO Bin;GAO Feng(Changqing Branch,China National Logging Corporation,Xi’an,Shaanxi 710201,China;Logging Technology Research Institute,China National Logging Corporation,Xi’an,Shaanxi 710077,China;Well Logging Technology Pilot Test Center,China National Petroleum Corporation,Xi’an,Shaanxi 710077,China;Material Equipment Company,China National Logging Corporation,Xi’an,Shaanxi 710201,China;Daqing Branch,China National Logging Corporation,Daqing,Heilongjiang 163412,China)

机构地区：[1]中国石油集团测井有限公司长庆分公司,陕西西安710201 [2]中国石油集团测井有限公司测井技术研究院,陕西西安710077 [3]中国石油天然气集团有限公司测井技术试验基地,陕西西安710077 [4]中国石油集团测井有限公司物资装备公司,陕西西安710201 [5]中国石油集团测井有限公司大庆分公司,黑龙江大庆163412

出　　处：《测井技术》2023年第5期623-628,共6页Well Logging Technology

基　　金：中国石油天然气集团有限公司项目“水平井动态监测测井仪器现场试验”(2022ZS04)。

摘　　要：为解决测井过程中声波变密度仪器偏心导致的声波幅度降低及固井质量评价不准确等问题,分析了声波变密度测井偏心影响及产生原理;在声波变密度测井数值模拟的基础上提出了均匀介质条件下声波变密度测井偏心影响的校正模型,设计了声波幅度偏心校正模型的验证装置,其室内实测数据证明了偏心校正模型的可靠性;从偏心距大小和准确获取首波数据两方面分析了该校正模型的适应性。偏心校正模型在长庆油田余X井的现场应用表明,利用偏心校正模型校正后的声波幅度与扶正条件下的声波幅度基本一致,证明该模型能有效校正仪器偏心引起的声波幅度偏差。研究结果表明偏心校正模型在偏心距小于9.37 mm时,可为声波变密度测井数据的校正提供技术支持。In order to solve the problems of acoustic wave amplitude reduction and inaccurate cementing quality evaluation caused by the eccentricity of acoustic variable density instrument in logging process,the principle of eccentricity influence of acoustic variable density logging is analyzed.Based on the numerical simulation of acoustic variable density logging,a correction model for the eccentricity effect of acoustic variable density logging under uniform medium conditions is proposed.The verification device of the acoustic amplitude eccentricity correction model is designed.The reliability of the eccentricity correction model is proved by the indoor measured data of the verification device.The adaptability of the correction model is analyzed from two aspects:eccentricity and accurate acquisition of the first wave data.The field application of the eccentricity correction model in Yu X well of Changqing oilfield shows that,the acoustic amplitude corrected by the eccentricity correction model is basically consistent with the acoustic amplitude under the condition of centralizing,indicating that the eccentricity correction model can effectively correct the acoustic amplitude deviation caused by the eccentricity of the instrument.The results show that the eccentricity correction model can provide technical support for the correction of acoustic variable density logging data when the eccentricity is less than 9.37 mm.

关 键 词：声波变密度测井 仪器偏心影响 数值模拟 偏心校正 适用性分析 

分 类 号：P631.84[天文地球—地质矿产勘探]