| 随钻测井环境中地层横波速度测量的数值研究 |
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| 引用本文： | 杨勇,车小花,李俊,张菲.随钻测井环境中地层横波速度测量的数值研究[J].科学技术与工程,2009,9(5). |
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| 作者姓名： | 杨勇 车小花 李俊 张菲 |
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| 作者单位： | 中国石油大学(北京)油气资源与探测国家重点实验室,北京,102249 |
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| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金面上项目，高等学校博士学科点专项科研基金 |
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| 摘 要： | 由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.
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| 关 键 词： | 时域有限差分 声波 随钻测井 速度测量 数值研究 |
Numerical Study for Measurement of Shear Wave Velocity in Logging-while-drilling Environment |
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| YANG Yong,GHE Xiao-hua,LI Jun,ZHANG Fei.Numerical Study for Measurement of Shear Wave Velocity in Logging-while-drilling Environment[J].Science Technology and Engineering,2009,9(5). |
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| Authors: | YANG Yong GHE Xiao-hua LI Jun ZHANG Fei |
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| Abstract: | Since it is difficult to measurement the velocity of shear wave,the full waveform of LWD multi-pole source is investigated numerically. 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. |
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| Keywords: | finite-difference time-domain acoustic wave logging while drilling velocity measurement numerical investigation |
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