随钻测井环境中地层横波速度测量的数值研究
he Numerical Study for Measurement of Shear Wave Velocity in Logging-While -Drilling Environment
基于慢地层横波速度测量困难，数值考察了多极子声源在裸眼井和随钻测井环境中激发的声场波形。随钻测井环境中，偶极子和四极子声源都能在快地层井孔中激发出携带地层横波信息的地层振型。研究表明在慢地层，偶极子声源激发的钻铤振型严重干扰地层横波波速的测量，低频四极子声源在慢地层井眼中则不会激发出钻铤振型。
Since it is difficult to measurement the velocity of shear wave, we numerical investigate the full waveform of LWD multi-pole source. In LWD environment, dipole and quadrupole source could measurement velocity of shear wave in fast formations. In slow formations, the dipole source excites the collar mode wave disturbing the measurement of shear wave, while quadrupole source could excite the mode wave of formations to measurement the velocity of shear wave.
杨勇、李俊、张菲、车小花
钻井工程声学工程石油天然气地质、石油天然气勘探
时域有限差分声波随钻测井速度测量数值研究
Finite-Difference Time-Domainacoustic wavelogging while drillingvelocity measurementnumerical investigate
杨勇,李俊,张菲,车小花.随钻测井环境中地层横波速度测量的数值研究[EB/OL].(2009-01-12)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/200901-454.点此复制
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