用三维时域有限差分法研究随钻声波测井仪器隔声体的设计
he Designing Isolator of Logging-While-Drilling Acoustic Tools Using Three-Dimensional Finite-Difference Time-Domain Method
在柱坐标系中，利用三维时域有限差分方法研究了随钻声波测井仪器的隔声体设计。结果表明，不同结构的隔声体对钻铤纵模式波的时延量和隔声量存在很大差异。一种由周期性交错排列的凹槽构成的隔声体，相比于由圆环形凹槽构成的隔声体，具有更好的隔声效果。
Based on the first order velocity-stress scheme on staggered grids, a three dimensional (3-D) finite-difference time-domain (FDTD) is applied to numerical study the designing of isolator of Logging-While-Drilling (LWD) acoustic tool in cylindrical coordinates. Simulation results show that different periodic grooved isolators vary widely in delaying and attenuating the tool waves which propagate along the tool. A type of isolator with staggered grooves is proposed for better performance.
李俊、杨勇、张菲、车小花
钻井工程声学工程电子技术应用
随钻测井时域有限差分隔声数值模拟
Logging-while-drilling finite-differencetime-domainsound isolationnumerical modeling
李俊,杨勇,张菲,车小花.用三维时域有限差分法研究随钻声波测井仪器隔声体的设计[EB/OL].(2009-01-12)[2025-08-23].http://www.paper.edu.cn/releasepaper/content/200901-473.点此复制
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