Experimental studies of monopole, dipole, and quadrupole acoustic logging while drilling (LWD) with scaled borehole models
Experimental studies of monopole, dipole, and quadrupole acoustic logging while drilling (LWD) with scaled borehole models
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DOI：
10.1190/1.2919827
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发表时间：
2008-07
期刊：
影响因子：
3.3
通讯作者：
Zhenya Zhu;M. Toksöz;R. Rao;D. Burns
中科院分区：
文献类型：
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作者：
Zhenya Zhu;M. Toksöz;R. Rao;D. Burns
We develop a 1:12 scale model logging-while-drilling (LWD) acoustic tool for laboratory measurements in borehole models to investigate the effects of tool wave modes on our ability to determine formation velocities in acoustic LWD. The scaled tool is comprised of three sections: (1) the source section, consisting of four transducers mounted on the tool body that can generate monopole, dipole, and quadrupole waves; (2) the receiver section, consisting of six sets of receivers, each containing two transducers mounted on opposite sides of the tool center line; and (3) the connector section, a threaded steel cylinder that connects the source and receiver sections tightly to simulate an LWD tool. We use four borehole models to simulate fast and slow isotropic and anisotropic formations. The slow-formation models are constructed of synthetic material ( Lucite® for the isotropic case and Phenolite® for the anisotropic case). The fast-formation models are made from natural rock samples (sandstone for the isotropi...
