测井技术2017，Vol.41Issue(3)：256-259,4.DOI:10.16489/j.issn.1004-1338.2017.03.002
随钻方位声波发射换能器性能数值模拟分析
Numerical Simulation and Analysis of LWD Azimuthal Sonic Transmitter's Performance
摘要
Abstract
As the core component of LWD azimuthal tool, the radiation directivity of transducer can directly influence the detected velocity accuracy.An arcuate transducer is studied for LWD azimuthal sonic logging.We used finite element method to simulate its radiation characteristics, and the influences of collar and transmitter's size are investigated.Our analysis results show that resonant frequency of arcuate transducer decreased with increasing angle or height.The collar and the open angle of transducer is an important factor affecting LWD azimuthal directivity, but the collar or angle of transducer decreasing made azimuthal resolution obviously improved.It provides theoretical basis for the LWD azimuthal transducer design.关键词
随钻方位声波测井/发射换能器/谐振频率/指向性/有限元法Key words
azimuthally LWD sonic logging/transmitting transducer/resonant frequency/directivity/finite element method分类
天文与地球科学引用本文复制引用
陈俊圆,唐晓明,苏远大,刘玉凯,许松,庄春喜..随钻方位声波发射换能器性能数值模拟分析[J].测井技术,2017,41(3):256-259,4.基金项目
国家自然科学基金(41474092,41604109) （41474092,41604109）
